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1

Jia, Lige, and Bo Zhang. "Water Use Attribution Analysis and Prediction Based on the VIKOR Method and Grey Neural Network Model: A Case Study of Zhangye City." Atmosphere 15, no. 11 (2024): 1387. http://dx.doi.org/10.3390/atmos15111387.

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Water consumption forecasting is a critical aspect of the increasingly strained water resources and sustainable water management processes. It is essential to explore the current status of water use patterns and future development directions in Zhangye City. In this study, 17 factors affecting water consumption in Zhangye City were selected to analyze changes in water consumption and to predict values from 2003 to 2022, utilizing the entropy weight–VIKOR model and the grey neural network model. The results indicate that agricultural water consumption and annual rainfall are the factors with the largest weights among the social and natural attribute indicators, respectively, significantly influencing water consumption in Zhangye City. As the proportions of water consumption for forestry, animal husbandry, fishery, livestock, urban public use, and ecological environment increase, while agricultural water consumption continues to decline, the overall water consumption trend in Zhangye City from 2003 to 2022 shows a positive trajectory. Each water consumption factor is tending toward greater balance, and the relationship between water supply and distribution is improving. The multi-year average relative error of the water consumption predictions for Zhangye City from 2003 to 2022 using the grey neural network model was 4.28%. Furthermore, the relative error values for annual predictions ranged from 0.60% to 5.00%, achieving an accuracy rate of 80.00%. This indicates a strong predictive performance. Ultimately, the model was used to predict a water consumption of 20.18 × 108 m3 in Zhangye City in 2027. The model can serve as a theoretical reference for short-term water consumption forecasting and for establishing a basin water resource allocation system in Zhangye City.
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2

Yang, Mingyue, Deye Qu, Yue Shen, Shanquan Yang, Bin Liu, and Wenjing Lu. "Evaluation of Water Resources Carrying Capacity of Zhangye City Based on Combined Weights and TOPSIS Modeling." Water 15, no. 24 (2023): 4229. http://dx.doi.org/10.3390/w15244229.

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According to the natural condition of water resources and the economic, social, and ecological environment status of Zhangye City, the water resources carrying capacity of Zhangye City is evaluated by using the water resources carrying capacity Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS) model with combination assignment. The results show that: (1) From 2010 to 2020, the water resources carrying capacity of Zhangye City was generally stable at the macro level, ranking at grades III and IV. However, from the micro level, the water resources carrying capacity fluctuates to a certain extent and shows an increasing trend year by year. (2) The steady improvement of economic and social conditions is the main driving force for the improvement of the comprehensive water resources carrying capacity of Zhangye City, and the changes in the ecological environment are also important factors affecting the carrying capacity of water resources. The results provided a decision basis for future comprehensive development and utilization of water resources in Zhangye City and a reference for water resource carrying capacity and water resource security assessment in other arid and semi-arid areas in our country.
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3

Liu, Zhichao, Chunhua Jiang, Tongxin Liu, et al. "Statistical Characteristics of Spread F in the Northeastern Edge of the Qinghai-Tibet Plateau during 2017–2022." Remote Sensing 16, no. 7 (2024): 1142. http://dx.doi.org/10.3390/rs16071142.

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Spread F (SF) in the ionosphere can be observed frequently in mid-latitude regions. It is suggested that atmospheric gravity waves play a significant role for the seeding of mid-latitude SF. Previous research suggested that the source of travelling ionospheric disturbances (TIDs) over China is in the southeastern and northeastern edge of the Qinghai-Tibet Plateau, however, until now there have been no ground-based observations of the ionosphere in this region. Recently, an advanced digital ionosonde was installed at Zhangye station (39.2°N, 100.54°E, Dip Lat 29.6°N) in the northeastern edge of the Qinghai-Tibet Plateau. It is an opportunity to verify the effect of gravity waves on the formation of mid-latitude SF by comparing it with observations in other regions of the Chinese sector. In this study, statistical analysis of SF recorded at Zhangye station during 2017–2022 was carried out. Results show that diurnal, seasonal and solar cycle characteristics of the occurrence rate of SF are similar with previous studies. At Zhangye station, the maximum occurrence rate of SF is during the post-midnight period in summer and winter. The occurrence rate of SF events have a negative relationship with solar activity. There is no obvious relationship between the occurrence rate of SF and geomagnetic activity. Comparing observations of other stations in the mid-latitude region, we found that the occurrence rates of SF (the annual maximum rates are from 33.83% to 53.29%) are much higher at Zhangye station. Further studies show that ionospheric disturbances can be observed frequently at Zhangye station, especially in autumn and winter. Gravity waves/TIDs in the northeast of the Qinghai-Tibet Plateau are suggested to explain the abnormal higher occurrence rate of SF at Zhangye station.
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4

Wang, Wenxuan, Chunhua Jiang, Lehui Wei, et al. "Comparative Study of the Es Layer between the Plateau and Plain Regions in China." Remote Sensing 14, no. 12 (2022): 2871. http://dx.doi.org/10.3390/rs14122871.

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The lower atmosphere forcing plays an important role in forming the sporadic E (Es) layer in the ionosphere. In this study, a comparative study of the Es layer recorded by ionosondes at the middle latitude regions was carried out between the plateau and plain regions in China. The two ionosonde stations (Zhangye, 39.21°N, 100.54°E and Beijing, 40.25°N, 116.25°E) are located at the Qinghai–Tibet Plateau and North China Plain, respectively. The data during the year 2018 were used to reveal the characteristics of the Es layer. The occurrence probability, the critical frequency (foEs) and the base virtual height (h’Es) were considered in this study. Results show that: (1) The diurnal and seasonal variations of the occurrence probability between these two regions are similar. The maximum occurrence probability is at noontime and in the summer season. However, the Es at Zhangye occurred more frequently than Beijing at nighttime and in winter to early spring. (2) Similar to previous studies, the maximum value of foEs at Beijing mainly occurred in summer. Interestingly, the maximum value is in winter at Zhangye station. (3) The characteristics of the anomaly of the Es layer at Zhangye are mostly consistent with the characteristics of atmospheric gravity waves in the Qinghai–Tibet Plateau. Therefore, compared with observations at Beijing, the anomalies of the Es layer at Zhangye (at night and in winter to spring) might be attributed to gravity waves in the lower atmosphere over the Qinghai–Tibet Plateau.
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5

Shang, Hai Yang. "Urban Sustainable Development Evaluation Based on System Dynamic Model." Advanced Materials Research 518-523 (May 2012): 5901–4. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.5901.

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Evaluation for urban sustainable development is very significant to improve the future development of urban. The analytic hierarchy process (AHP) is very popular used to evaluate the urban sustainable development, but limited to forecasting the future development. In the study, a model designed based on SD and AHP is expected to resolve this problem. And we take Zhangye city in Gansu province as an example to study the evaluation performance of the model. The result of the urban sustainable development is getting better and better towards 2020. The result shows that the development of Zhangye city is going to be good in future 10 years. The experimental results indicate the effectiveness and correctness of the proposed method.
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6

Shang, Hai Yang, and Fang Su. "An Application of System Dynamic Approach to Urban Sustainable Development Evaluation." Applied Mechanics and Materials 195-196 (August 2012): 783–86. http://dx.doi.org/10.4028/www.scientific.net/amm.195-196.783.

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Evaluation for urban sustainable development is very significant to improve the future development of urban. The analytic hierarchy process (AHP) is very popular used to evaluate the urban sustainable development, but limited to forecasting the future development. In the study, a model designed based on SD and AHP is expected to resolve this problem. And we take Zhangye city in Gansu province as an example to study the evaluation performance of the model. The result of the urban sustainable development is getting better and better towards 2020. The result shows that the development of Zhangye city is going to be good in future 10 years. The experimental results indicate the effectiveness and correctness of the proposed method.
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7

Zaizen, Yuji, Miwako Ikegami, Kikuo Okada, and Yukio Makino. "Aerosol Concentration Observed at Zhangye in China." Journal of the Meteorological Society of Japan. Ser. II 73, no. 5 (1995): 891–97. http://dx.doi.org/10.2151/jmsj1965.73.5_891.

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8

Wang, Mei, De Shan Tang, Ijaz Ahmad, and Jin Xin Zhang. "Assessment of Regional Water-Human Harmony Based on ANP-Entropy Model." Applied Mechanics and Materials 692 (November 2014): 121–26. http://dx.doi.org/10.4028/www.scientific.net/amm.692.121.

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Aiming at interactions between human system and water system, a new evaluation system for water-human harmony index (WHHI) was built on the base of triple criteria: Natural water cycle’s health degree (NWHD), Social water cycle’s rationality degree (SWRD) and Human-to-water fitness degree (HWFD). Analytic Network Process (ANP) and Entropy Mothed were applied to the evaluation model for Water-human harmony degree (WHHD). With relevant data of WHHI in Zhangye city, Gansu province, the state of the water-human relationship in Zhangye was assessed from each criterion angle and the result showed that water-human harmony situation as a whole was on the upswing, while the trouble of natural water cycle’s health was the biggest shortcoming in the process of harmonious development. This evaluation model can satisfy practical applications and reflect regional objective reality on water-human relationship, which has a certain guiding significance for regional water resource management.
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9

Zhang, Weidi, and Runbo Liu. "Data analysis and spatial design study of children's activity sites in rural Gansu, China." Urban Resilience and Sustainability 1, no. 4 (2023): 314–33. http://dx.doi.org/10.3934/urs.2023020.

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<abstract> <p>This paper examined rural outdoor activity sites for children in Zhangye, Gansu Province, China. The study analyzed the characteristics of children's groups and their behavioral patterns during outdoor activities in rural areas, and explored the factors affecting children's engagement in outdoor activities. A questionnaire survey was conducted to assess the physical and mental health status of rural children in Gansu Province, the distribution of outdoor activity time, and the influence of activity venues on children. Based on the survey results in rural Zhangye, Gansu Province, activity venues and facilities suitable for rural children in Gansu were identified. Finally, five design principles were proposed (i.e., safety, fun, comfort, accessibility, and guiding) to cater to the activity preferences of rural children in Gansu, China and provide a nurturing environment that fostered their physical and mental growth.</p> </abstract>
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10

Wang, Xin, Hui Wen, Jinsen Shi, et al. "Optical and microphysical properties of natural mineral dust and anthropogenic soil dust near dust source regions over northwestern China." Atmospheric Chemistry and Physics 18, no. 3 (2018): 2119–38. http://dx.doi.org/10.5194/acp-18-2119-2018.

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Abstract. Mineral dust aerosols (MDs) not only influence the climate by scattering and absorbing solar radiation but also modify cloud properties and change the ecosystem. From 3 April to 16 May 2014, a ground-based mobile laboratory was deployed to measure the optical and microphysical properties of MDs near dust source regions in Wuwei, Zhangye, and Dunhuang (in chronological order) along the Hexi Corridor over northwestern China. Throughout this dust campaign, the hourly averaged (±standard deviation) aerosol scattering coefficients (σsp, 550 nm) of the particulates with aerodynamic diameters less than 2.5 µm (PM2.5) at these three sites were sequentially 101.5 ± 36.8, 182.2 ± 433.1, and 54.0 ± 32.0 Mm−1. Correspondingly, the absorption coefficients (σap, 637 nm) were 9.7 ± 6.1, 6.0 ± 4.6, and 2.3 ± 0.9 Mm−1; single-scattering albedos (ω, 637 nm) were 0.902 ± 0.025, 0.931 ± 0.037, and 0.949 ± 0.020; and scattering Ångström exponents (Åsp, 450–700 nm) of PM2.5 were 1.28 ± 0.27, 0.77 ± 0.51, and 0.52 ± 0.31. During a severe dust storm in Zhangye (i.e., from 23 to 25 April), the highest values of σsp2.5 (∼ 5074 Mm−1), backscattering coefficient (σbsp2.5, ∼ 522 Mm−1), and ω637 (∼ 0.993) and the lowest values of backscattering fraction (b2.5, ∼ 0.101) at 550 nm and Åsp2.5 (∼ −0.046) at 450–700 nm, with peak values of aerosol number size distribution (appearing at the particle diameter range of 1–3 µm), exhibited that the atmospheric aerosols were dominated by coarse-mode dust aerosols. It is hypothesized that the relatively higher values of mass scattering efficiency during floating dust episodes in Wuwei and Zhangye are attributed to the anthropogenic soil dust produced by agricultural cultivations.
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11

Wen, X. H., Y. Q. Wu, L. J. E. Lee, J. P. Su, and J. Wu. "Groundwater flow modeling in the Zhangye Basin, Northwestern China." Environmental Geology 53, no. 1 (2007): 77–84. http://dx.doi.org/10.1007/s00254-006-0620-7.

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12

Meng, Jijun, Xiuqin Wu, and Zhengguo Li. "Landuse/landcover changes in Zhangye oasis of Hexi Corridor." Journal of Geographical Sciences 13, no. 1 (2003): 71–75. http://dx.doi.org/10.1007/bf02873149.

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13

Zhou, Fang-Cheng, Xiaoning Song, Pei Leng, Hua Wu, and Bo-Hui Tang. "An Algorithm for Retrieving Precipitable Water Vapor over Land Based on Passive Microwave Satellite Data." Advances in Meteorology 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/4126393.

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Precipitable water vapor (PWV) is one of the most variable components of the atmosphere in both space and time. In this study, a passive microwave-based retrieval algorithm for PWV over land without land surface temperature (LST) data was developed. To build the algorithm, two assumptions exist: (1) land surface emissivities (LSE) at two adjacent frequencies are equal and (2) there are simple parameterizations that relate transmittance, atmospheric effective radiating temperature, and PWV. Error analyses were performed using radiosonde sounding observations from Zhangye, China, and CE318 measurements of Dalanzadgad (43°34′37′′N, 104°25′8′′E) and Singapore (1°17′52′′N, 103°46′48′′E) sites from Aerosol Robotic Network (AERONET), respectively. In Zhangye, the algorithm had a Root Mean Square Error (RMSE) of 4.39 mm and a bias of 0.36 mm on cloud-free days, while on cloudy days there was an RMSE of 4.84 mm and a bias of 0.52 mm because of the effect of liquid water in clouds. The validations in Dalanzadgad and Singapore sites showed that the retrieval algorithm had an RMSE of 4.73 mm and a bias of 0.84 mm and the bigger errors appeared when the water vapor was very dry or very moist.
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14

王, 欣. "Geoscience Tourist Protection and Development Based on Zhangye World Geopark." Geographical Science Research 11, no. 05 (2022): 491–500. http://dx.doi.org/10.12677/gser.2022.115050.

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15

Hai-yang, Shang. "Emergy Calculation and Analysis of Food Crops in Zhangye City." Advance Journal of Food Science and Technology 7, no. 12 (2015): 921–25. http://dx.doi.org/10.19026/ajfst.7.2534.

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16

Wen, X. H., Y. Q. Wu, and J. Wu. "Hydrochemical characteristics of groundwater in the Zhangye Basin, Northwestern China." Environmental Geology 55, no. 8 (2007): 1713–24. http://dx.doi.org/10.1007/s00254-007-1122-y.

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17

Yan, Hao Kai, ShaoYing Ma, Xu Lu, et al. "Response of Wine Grape Quality to Rainfall, Temperature, and Soil Properties in Hexi Corridor." HortScience 57, no. 12 (2022): 1593–99. http://dx.doi.org/10.21273/hortsci16845-22.

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This study aimed to clarify the relationship between grape (Vitis vinifera L.) quality and environmental factors (climate and soil), and to elucidate the theoretical basis and provide technical guidance for the rational planning of the cultivation area and the precise regulation of the cultivation mode in the future. The fruits of three different grape cultivars, Pinot Noir, Merlot, and Vidal, as well as soil samples and meteorological data were collected from three wine grape growing areas (Wuwei, Zhangye, and Jiayuguan) in the Hexi Corridor, Northwest China. Principal-component analysis (PCA) and correlation analysis were conducted to understand the relationship of grape quality with weather conditions and soil properties. The results showed that the titratable acid content of grape berries was significantly negatively correlated with average temperature from August to September, average minimum temperatures from August to September, and from April to October, mean annual minimum temperature, growing degree days from August to September, and soil total nitrogen content, and significantly positively correlated with average rainfall from April to October, annual mean rainfall, and soil available potassium content. In addition, the pH of grape juice was significantly negatively correlated with annual mean rainfall and soil available potassium content. However, it was significantly positively correlated with average temperature and average minimum temperature from August to September, average minimum temperature from April to October, growing degree days from August to September, as well as soil total nitrogen content. In addition, the results of PCA showed that the fruit quality scores of ‘Vidal’ in Jiayuguan, ‘Merlot’ in Zhangye, and ‘Pinot Noir’ in Wuwei were the highest, respectively. In conclusion, the contents of titratable acid, pH, and Brix° are greatly affected by climate and soil factors. ‘Vidal’, ‘Merlot’, and ‘Pinot Noir’ were suitable for planting in Jiayuguan, Zhangye, and Wuwei, respectively. Nowadays, few reports focus on the relationship between grape quality and soil and climate conditions. Based on the investigation and analysis of the differences of climate, soil, and grape berries quality in the three production areas of Hexi Corridor, the relationship among climate, soil, and grape quality by using statistical methods was studied, which could provide references for clarifying the reasons why environmental factors affect grape quality and select the suitable area for wine grape cultivation.
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18

Okada, Kikuo, and Kenji Kai. "Features and Elemental Composition of Mineral Particles Collected in Zhangye, China." Journal of the Meteorological Society of Japan. Ser. II 73, no. 5 (1995): 947–57. http://dx.doi.org/10.2151/jmsj1965.73.5_947.

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19

Kai, Kenji, Mayumi Matsuda, and Ritsuko Sato. "Oasis Effect Observed at Zhangye Oasis in the Hexi Corridor, China." Journal of the Meteorological Society of Japan. Ser. II 75, no. 6 (1997): 1171–78. http://dx.doi.org/10.2151/jmsj1965.75.6_1171.

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20

Hai-yang, Shang. "Sustainable Household Food Consumption Patterns in Zhangye City of Heihe River." Advance Journal of Food Science and Technology 7, no. 2 (2015): 113–19. http://dx.doi.org/10.19026/ajfst.7.1278.

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21

G Q, Li, Zhang H, and Xie J B. "Dataset of Multi-satellite Synchronous and Collaborative Observation in Zhangye (2013)." Journal of Global Change Data & Discovery 1, no. 2 (2017): 216–24. http://dx.doi.org/10.3974/geodp.2017.02.13.

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22

An, Yonghui, Yushan Wang, Hui Zhang, and Xi Wu. "GIS-based Suitability Assessment for Shallow Groundwater Development in Zhangye Basin." Procedia Environmental Sciences 12 (2012): 1397–403. http://dx.doi.org/10.1016/j.proenv.2012.01.442.

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23

Bai, Yuping, Zhe Zhao, Chuyao Weng, Wenxuan Wang, and Yecui Hu. "Scenario-Based Analysis of Land Use Competition and Sustainable Land Development in Zhangye of the Heihe River Basin, China." International Journal of Environmental Research and Public Health 18, no. 19 (2021): 10501. http://dx.doi.org/10.3390/ijerph181910501.

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Rapid economic growth has a significant impact on land use change, which would threaten the natural ecology. Zhangye city of the Heihe River Basin, China is an ecologically vulnerable region where land use changes significantly due to socioeconomic development and population increases. The study employed a computable general equilibrium of land use change (CGELUC) model to simulate land use change and then used a dynamic land system (DLS) model to spatialize land use change during 2015–2030 under three development scenarios in Zhangye city. The three development scenarios are the baseline scenario (BAU), the resource consumption scenario (RCS) and the green development scenario (GDS). We found that economic growth would lead to land demand increases in high value-added industries and decreases in low value-added industries. The cultivated land would decrease while the built-up area would increase. By 2030, the cultivated land will decrease by 8.16%, 10.89% and 4.16%, respectively, under BAU, RCS and GDS, while the built-up area will increase by 8.61%, 10.39% and 4.75%, respectively. The expansion of built-up area under RCS presents spatial characteristics of centralized distribution, while spatial characteristics of uniform discrete distributions are presented under GDS. The expansion of ecological land under GDS would be considerable, especially in the north of Sunan County and Gaotai County, and around the natural reserve of Ganzhou County. This paper provides a scientific reference for coordinating economic development and ecological protection in the rapidly developing urbanized areas in western China.
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24

Ma, Huiqin, Yanmin Lu, Haipeng Liu, Xiaojie Hou, and Sujian Pei. "Hessebius luculentus, a new species of the genus Hessebius Verhoeff, 1941 from China (Lithobiomorpha, Lithobiidae)." ZooKeys 741 (March 7, 2018): 193–202. http://dx.doi.org/10.3897/zookeys.741.20061.

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Hessebius luculentussp. n.(Lithobiomorpha: Lithobiidae), recently discovered from Shandan County, Zhangye City, Province Gansu, Qinghai-Tibet Plateau, China, is described. Morphologically it resemblesH. jangtseanus(Verhoeff, 1942), but can be easily distinguished from the latter by size of Tömösváry’s organ’s, the morphological characters of a protuberance on the dorsal end of the second article of the female gonopods; and obvious differences in the dorsal plectrotaxy of both the 14thand 15thlegs. The main morphological characters and a key to the known Chinese species of genusHessebiusbased on adult specimens are presented.
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Tang, Zeng. "Value the Irrigation Water: A Case Study in Northwest China." Advanced Materials Research 113-116 (June 2010): 2385–88. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.2385.

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As a non-market good, the value of irrigation water can be approximated by empirical investigations of farmers’ willingness to pay (WTP) for irrigation water. In this paper, a contingent valuation study on farmer WTP for irrigation water was conducted. With double-bounded bidding, an average WTP of 1021 RMB/ha/yr was found. The perceived value of water is falls short of the costs of irrigation water provisioning. This suggests that the use of irrigation water in Zhangye is not sustainable, and the price policy alone may not serve the purpose of efficient irrigation water management.
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Ma, Huiqin, Yanmin Lu, Haipeng Liu, Xiaojie Hou, and Sujian Pei. "Hessebius luculentus, a new species of the genus Hessebius Verhoeff, 1941 from China (Lithobiomorpha, Lithobiidae)." ZooKeys 741 (March 7, 2018): 193–202. https://doi.org/10.3897/zookeys.741.20061.

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Hessebius luculentus sp. n. (Lithobiomorpha: Lithobiidae), recently discovered from Shandan County, Zhangye City, Province Gansu, Qinghai-Tibet Plateau, China, is described. Morphologically it resembles H. jangtseanus (Verhoeff, 1942), but can be easily distinguished from the latter by size of Tömösváry's organ's, the morphological characters of a protuberance on the dorsal end of the second article of the female gonopods; and obvious differences in the dorsal plectrotaxy of both the 14<sup>th</sup> and 15<sup>th</sup> legs. The main morphological characters and a key to the known Chinese species of genus Hessebius based on adult specimens are presented.
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An, Yong Hui, Shuang Bao Han, Xi Wu, Xu Xue Cheng, and Wei Po Liu. "Numerical Simulation and Prediction of High Fluorine Groundwater Transport in Zhangye Basin." Advanced Materials Research 466-467 (February 2012): 36–41. http://dx.doi.org/10.4028/www.scientific.net/amr.466-467.36.

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Simulate Feflow with finite element method, and establish flow model and solute transport model of high fluorine groundwater area in Zhangye Basin. Predicting groundwater system response under different exploitation scheme, and evaluating the risk of deep low fluorine groundwater polluted by shallow high fluorine groundwater. The results showed that, firstly, the existing exploitation intensity and the increasing exploitation intensity of the local planning would lead to groundwater table descent, for the deep groundwater head is higher than phreatic water in above scheme, the polluted risk of low fluorine freshwater is low. Secondly, low and deep groundwater “cross strata” caused by well completion technology would lead to deep low fluorine freshwater polluted, and the high fluorine polluted area caused by single well is limited, but the polluted risk of low fluorine aquifer is increasing with that confined water head is lower than phreatic water in local concentrated excess exploitation area. Propose the measures and suggestions of the groundwater sustainable utilization.
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Guo, Zhenhai, Yao Dong, Jianzhou Wang, and Haiyan Lu. "The Forecasting Procedure for Long-Term Wind Speed in the Zhangye Area." Mathematical Problems in Engineering 2010 (2010): 1–17. http://dx.doi.org/10.1155/2010/684742.

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Energy crisis has made it urgent to find alternative energy sources for sustainable energy supply; wind energy is one of the attractive alternatives. Within a wind energy system, the wind speed is one key parameter; accurately forecasting of wind speed can minimize the scheduling errors and in turn increase the reliability of the electric power grid and reduce the power market ancillary service costs. This paper proposes a new hybrid model for long-term wind speed forecasting based on the first definite season index method and the Autoregressive Moving Average (ARMA) models or the Generalized Autoregressive Conditional Heteroskedasticity (GARCH) forecasting models. The forecasting errors are analyzed and compared with the ones obtained from the ARMA, GARCH model, and Support Vector Machine (SVM); the simulation process and results show that the developed method is simple and quite efficient for daily average wind speed forecasting of Hexi Corridor in China.
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Chen, Jiansheng, Xiaoyan Liu, Xiaoxu Sun, Zhiguo Su, and Bin Yong. "The origin of groundwater in Zhangye Basin, northwestern China, using isotopic signature." Hydrogeology Journal 22, no. 2 (2013): 411–24. http://dx.doi.org/10.1007/s10040-013-1051-7.

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Yang, Rong, and Wenjie Liu. "Nitrate contamination of groundwater in an agroecosystem in Zhangye Oasis, Northwest China." Environmental Earth Sciences 61, no. 1 (2009): 123–29. http://dx.doi.org/10.1007/s12665-009-0327-7.

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Tan, Changrong, Qi Chen, Donglin Qi, Liang Xu, and Jiayun Wang. "A Case Analysis of Dust Weather and Prediction of PM10 Concentration Based on Machine Learning at the Tibetan Plateau." Atmosphere 13, no. 6 (2022): 897. http://dx.doi.org/10.3390/atmos13060897.

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Dust weather is common and disastrous at the Tibetan Plateau. This study selected a typical case of dust weather and analyzed its main development mechanism in the northeast of the Tibetan Plateau, then applied six machine learning methods and a time series regression model to predict PM10 concentration in this area. The results showed that: (1) The 24-h pressure change was positive when the front intruded on the surface; convergence of vector winds with a sudden drop in temperature and humidity led by a trough on 700 hPa; a “two troughs and one ridge” weather situation appeared on 500 hPa while the cold advection behind the trough was strong and a cyclone vorticity was formed in the east of Inner Mongolia. (2) The trajectory of air mass from the Hexi Corridor was the main air mass path influencing Xining City, in this case, since a significant lag in the peak of PM10 concentration appeared in Xining City when compared with Zhangye City. (3) The Multiple Linear Regression was not only timely and effective in predicting the PM10 concentration but had great abilities for anticipating the transition period of particle concentration and the appearance date of maximum values in such dust weather. (4) The MA and MP in the clean period were much lower than that in the dust period; the PM10 of Zhangye City as an eigenvalue played an important role in predicting the PM10 of Xining City even in clean periods. Different from dust periods, the prediction effect of Random Forest Optimized by Bayesian hyperparameter was superior to Multiple Linear Regression in clean periods.
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Gu, Lianglei, Zeyong Hu, Jimin Yao, and Genhou Sun. "Actual and Reference Evapotranspiration in a Cornfield in the Zhangye Oasis, Northwestern China." Water 9, no. 7 (2017): 499. http://dx.doi.org/10.3390/w9070499.

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Sun, Zhongxiao, Feng Wu, Chenchen Shi, and Jinyan Zhan. "The impact of land use change on water balance in Zhangye city, China." Physics and Chemistry of the Earth, Parts A/B/C 96 (December 2016): 64–73. http://dx.doi.org/10.1016/j.pce.2016.06.004.

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34

Ran, Youhua, Xin Li, Yong Ge, Xuegang Lu, and Yaokang Lian. "Optimal selection of groundwater-level monitoring sites in the Zhangye Basin, Northwest China." Journal of Hydrology 525 (June 2015): 209–15. http://dx.doi.org/10.1016/j.jhydrol.2015.03.059.

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35

Sun, Tianhe, Qiuqiong Huang, and Jinxia Wang. "Estimation of Irrigation Water Demand and Economic Returns of Water in Zhangye Basin." Water 10, no. 1 (2017): 19. http://dx.doi.org/10.3390/w10010019.

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36

Wang, Yong, Hong-lang Xiao, and Rui-fang Wang. "Water Scarcity and Water Use in Economic Systems in Zhangye City, Northwestern China." Water Resources Management 23, no. 13 (2009): 2655–68. http://dx.doi.org/10.1007/s11269-009-9401-x.

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37

Li, Mingji, Yuxia Ma, and Peiji Shi. "Climate changing characteristics of Zhangye City in Heihe River basin during 1968–2005." Frontiers of Earth Science in China 2, no. 2 (2008): 243–48. http://dx.doi.org/10.1007/s11707-008-0032-y.

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38

Liu, Yazhou, Meiling Zhang, Youyi Zhao, Jianzhou Wei, Shengwei Zhou, and Xiaoyan Shi. "Effect of Environmental Factors on Grassland Biodiversity and Biomass in the Zhangye Region." Agronomy 15, no. 2 (2025): 476. https://doi.org/10.3390/agronomy15020476.

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Grassland ecosystems, which are essential for biodiversity and ecosystem services, are increasingly vulnerable to degradation, primarily driven by climate change and soil variability. Understanding the influence of environmental factors on these indicators is critical for addressing grassland degradation and promoting sustainable land management practices. This study investigates the influence of environmental factors, particularly temperature, precipitation, and soil properties, on species diversity and biomass in the arid and semi-arid grasslands of the Zhangye region, China. Field sampling was performed at 63 sites to collect data on vegetation characteristics, biomass, and soil properties, complemented by climate data. This study investigates the mechanisms through which abiotic factors influence biomass and species diversity. The results indicate that soil moisture and relative humidity, as related factors, are significantly positively correlated with both species diversity and biomass, thereby highlighting the stress induced by temperature in arid ecosystems. Furthermore, soil bulk density and pH were identified as critical mediating factors that influence biomass indirectly through their impact on soil moisture. These findings underscore the complex role of climate–soil interactions in shaping grassland ecosystems and offer essential insights for developing adaptive strategies to manage and mitigate grassland degradation in response to climate change.
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Zhang, Xifeng, Xiaowei Cui, and Shuiming Liang. "Evolution and Optimization of an Ecological Network in an Arid Region Based on MSPA-MCR: A Case Study of the Hexi Corridor." Sustainability 16, no. 4 (2024): 1704. http://dx.doi.org/10.3390/su16041704.

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Under the background of climate change, the problems of water resource allocation and desertification in arid areas are becoming increasingly prominent, which seriously threatens the sustainable development of society. Constructing an ecological network is an important measure to improve the ecological environment and maintain ecological service function. This study takes the Hexi Corridor as an example and relies on land use data from 2000 to 2020, and comprehensively applies methods, such as morphological spatial pattern analysis (MSPA), the minimum cumulative resistance model (MCR), and the network evaluation index to construct and optimize the ecological network of the Hexi Corridor. Our results show: (1) the spatial distribution of the landscape elements in the Hexi Corridor was not uniform and that the ecological foundation in the north was poor; (2) the resistance surface was “low in the south and high in the north”, with low-value areas mainly located to the south of Jiuquan City, Zhangye City, and Wuwei City, and the high-value areas were mainly located in the middle and to the north of Jiuquan City and Wuwei City; (3) the ecological source areas, corridors, and nodes showed a fluctuating upward trend, and they were mainly located to the southwest of Zhangye City, Jiuquan City, and Wuwei City; (4) the network closure (α), line point rate (β), and network connectivity (γ) showed a W-shaped change trend; (5) after the ecological network optimization, 22 new ecological source areas, 78 new corridors, and 61 new nodes were added, as a result, the α, β, and γ indices all increased. Our results provide a reference for ecological environment restoration research and serve as a regionally balanced means of sustainably developing the Hexi Corridor.
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Zhang, Xin Yu, and Pei Ji Shi. "Optimizing Land Use Structure for Low Carbon Target: A Case Study in Zhangye of Gansu Province." Applied Mechanics and Materials 707 (December 2014): 214–18. http://dx.doi.org/10.4028/www.scientific.net/amm.707.214.

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Regional land use is an important source of carbon emissions .To some extent , the optimization land use will change the pattern and structure of human energy consumption .In this paper, we try to put forward a new approach to optimize the land use structure of the low carbon target in Zhangye .Three schemes for land use low-carbon optimization were proposed and analyzed, and the policy suggestions were put forward finally . Compare with the original plan, Optimization program in the year of 2020, the amount of carbon accumulation increase 124.1648 million tons, and carbon emissions reduce 1,152,100 tons. This indicates that the scheme for land use planning to achieve carbon reduction and carbon accumulation has important guiding significance.
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41

Zhou, Yixun, Liying Chen, and Shan Tan. "Tourism Sustainability Optimization in Juneau: Integrated Application of Genetic Algorithm and Analytic Hierarchy Process." Frontiers in Sustainable Development 5, no. 3 (2025): 27–47. https://doi.org/10.54691/fkfz2r26.

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With the rapid development of tourism in Juneau City, while bringing considerable income to the city, it also brings problems of congestion and retreating glaciers. In order to manage these hidden costs brought by tourism and establish a sustainable tourism industry, this paper based on genetic algorithm, established an optimization model to study the tourism industry. Aiming at the first problem, firstly, a travelable model based on genetic algorithm is established, which determines the objective function by maximizing the total utility. Then, we use curve regression to establish the relationship between social cost and cost and the number of tourists, respectively. In addition, considering the relationship between various factors and existing data, we establish the ecological index and survival index SQ, and assign weights to various indicators by entropy method. Then we use ARIMA to predict the SQ and Env in 2024 based on the data from 2013 to 2023.Then, according to the principle of 3σ, we obtain the constraint condition that Env≥〖Env〗_min=0.197 and SQ≥〖SQ〗_min=0.321. Considering the tourist situation in Juneau, we also use the same limit on the number of tourists that P≤1187782. Finally, the optimal solution is u = 10.886977 (see Table 7). Afterwards, according to the requirements of the topic, we conduct the model, and the results show that the impact of per capita consumption expenditure y on u is relatively limited, and the model is robust. Finally, we use the Analytic Hierarchy Process to compare eleven indicators, and the results show that Standard deviation of glacier area, Gross total (carbon emission), Median Earnings Growth, Unemployment Rate and other indicators have a great impact on the final decision (total income), and they will be used as key factors in the later stage. Aiming at the second problem, this paper applies the tours model based on genetic algorithm to the ancient city, and extends to the scenic spots with few tourists, such as Zhangye Danxia Geopark. First of all, for the ancient city, we collected and processed relevant data, analyzed parameters such as the average consumption expenditure of tourists, and then used genetic algorithm to optimize, and obtained the optimal strategy of the ancient city and the corresponding optimal value as shown in Table 9. Then, we extend the model to Zhangye Danxia Geopark. According to the characteristics of the small number of tourists, appropriate constraints such as ecological index, survival index and number of tourists are used to maximize the total utility. Finally, we get the tourism strategy which is suitable for Zhangye Danxia Geopark. In response to Question 3, we wrote a memorandum for the Juno City Tourism Committee. Through ecological indicators and survival indexes, we proposed that tourism can be realized from the aspects of tourist management, strengthening infrastructure construction, scenic spots and protection, ecology and protection, and policies and regulations. Our model can not only provide scientifically effective policy support for Juneau City but also be generalized to other cities affected by tourism.
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Gou, K. H., X. C. Gao, L. Wang, et al. "Risk factors for perinatal birth defects in Zhangye: a long-term hospital-based study." Clinical and Experimental Obstetrics & Gynecology 44, no. 4 (2017): 581–83. http://dx.doi.org/10.12891/ceog3653.2017.

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43

Ling, HAN, ZHAO Cheng-Zhang, XU Ting, FENG Wei, DUAN Bei-Bei, and ZHENG Hui-Ling. "Trade-off between leaf size and vein density of Achnatherum splendens in Zhangye wetland." Chinese Journal of Plant Ecology 40, no. 8 (2016): 788–97. http://dx.doi.org/10.17521/cjpe.2016.0003.

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44

Xu, Qian, Wei Song, and Ying Zhang. "Forecast and optimal allocation of production, living and ecology water consumption in Zhangye, China." Physics and Chemistry of the Earth, Parts A/B/C 96 (December 2016): 16–25. http://dx.doi.org/10.1016/j.pce.2016.07.003.

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45

Li, Zhihui, Xiangzheng Deng, Gui Jin, Alnail Mohmmed, and Aisha Olushola Arowolo. "Tradeoffs between agricultural production and ecosystem services: A case study in Zhangye, Northwest China." Science of The Total Environment 707 (March 2020): 136032. http://dx.doi.org/10.1016/j.scitotenv.2019.136032.

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46

Liu, Yaqun, Wei Song, and Xiangzheng Deng. "Changes in crop type distribution in Zhangye City of the Heihe River Basin, China." Applied Geography 76 (November 2016): 22–36. http://dx.doi.org/10.1016/j.apgeog.2016.09.009.

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47

Chang, Juan, and Genxu Wang. "Major ions chemistry of groundwater in the arid region of Zhangye Basin, northwestern China." Environmental Earth Sciences 61, no. 3 (2009): 539–47. http://dx.doi.org/10.1007/s12665-009-0364-2.

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48

Wang, Yuxuan, Yinhuan Ao, and Zhaoguo Li. "Evapotranspiration Characteristics of Different Oases and Effects of Human Activities on Evapotranspiration in Heihe River Basin." Remote Sensing 14, no. 24 (2022): 6283. http://dx.doi.org/10.3390/rs14246283.

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Evapotranspiration plays a decisive role in the whole oasis ecosystem and is an important factor to maintain the ecological stability of oases. To quantitatively analyze the evapotranspiration differences of oases at different scales and the expansion of urbanization, it is necessary to compare and discuss them at different time scales. In this study, the spatial and temporal characteristics of evapotranspiration of Zhangye Oasis, Jinta Oasis, and Ejina Oasis in the Heihe River basin were analyzed by using the remote sensing dataset of daily surface evapotranspiration of 100 m resolution from 2010 to 2016. The difference in evapotranspiration intensity in different oases was analyzed, and the influences of irrigation and urbanization expansion on evapotranspiration were discussed. The conclusion is as follows: Zhangye Oasis is the largest oasis in the area and, compared with other oases, due to the largest proportion of wetland and farmland in the underlying surface, the intensity of evapotranspiration is also the largest, reaching 650 mm/year on average. There is no obvious annual change; the range of evapotranspiration changes fluctuates between positive and negative 60 mm/year. Jinta Oasis began to decline after 2012; the evapotranspiration value dropped from 620 mm/tear to 560 mm/year, while Ejina Oasis showed a slight increase after 2014. In the irrigation stage, the evapotranspiration intensity increased significantly. Especially in the peak season of crop growth, the evapotranspiration after irrigation increased by 4 mm/day compared with that before irrigation. The evapotranspiration in urban and oasis areas is different in summer: compare that of 2010 with 2016—the evapotranspiration intensity of the expanding towns in the northeast direction decreased by about 50 mm/month, the northwest expanding towns decreased by about 110 mm/month. There was no obvious annual change in evapotranspiration in the urban area. With the expansion of urbanization, the evapotranspiration intensity in oases decreased. The results of this study provide some reference for the study of oasis irrigation activities and urbanization expansion.
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Liu, Ya Feng, Guo Shang Wang, Dong Zhao, Hong Wen Mu, and Xiao Lei Guo. "The Analysis of Evolution Characteristic for Maximum Wind Speed in the Hexi Corridor." Applied Mechanics and Materials 737 (March 2015): 3–8. http://dx.doi.org/10.4028/www.scientific.net/amm.737.3.

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Through the Merlot wavelet periodic analysis and Mann-Kendall mutation analysis about the maximum wind speed of 14 weather station in Hexi corridor over the past 41 years,the evolution characteristic of the maximum wind speed can be gotten:the Hexi corridor has about 28-29 years main period and 8-12 years secondary period,presenting sinusoidal curve,and the transformation energy cycled from small to big to small to big;After 1980,there were abrupt changes and decline in Anxi,Jiuquan,Zhangye and Wuwei.The Hexi corridor is in the wind speed environment of same climate conditions,and the inter-annual change feature becomes balanced; but in internal local areas,due to the influence of environment, terrain and urban heat island effect,the secondary period is different,presenting abrupt changes and decreasing tendency in 1980s.
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Kai, Kenji, Zhe-Gong Huang, Masataka Shiobara, Zibao Shen, and Yasushi Mitsuta. "Seasonal Variation of Aerosol Optical Thickness over the Zhangye Oasis in the Hexi Corridor, China." Journal of the Meteorological Society of Japan. Ser. II 75, no. 6 (1997): 1155–63. http://dx.doi.org/10.2151/jmsj1965.75.6_1155.

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