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Journal articles on the topic 'Conifer-broadleaf forest'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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1

Tsukada, Matsuo. "Map of Vegetation during the Last Glacial Maximum in Japan." Quaternary Research 23, no. 3 (May 1985): 369–81. http://dx.doi.org/10.1016/0033-5894(85)90041-9.

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A vegetation map reconstructed for the Japanese Archipelago (based upon pollen data from 28 sites and plant macrofossil data from 33 sites) at the time of last glacial maximum shows that coniferous forests covered extensive areas of the land. Boreal conifer forests (dominated by thePicea jezoensiscomplex,P. glehnii, Abies sachalinensis, A. mariesii, Tsuga diversifolia, andPinuswithLarix gmelinii, though the latter species was confined only to the northern part of northeastern Honshu and Hokkaido) occupied the modern cool-temperature deciduous broadleaf and mid-temperate conifer forest zones, a
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2

Abele, Suzanne E., S. Ellen Macdonald, and John R. Spence. "Cover type, environmental characteristics, and conservation of terrestrial gastropod diversity in boreal mixedwood forests." Canadian Journal of Forest Research 44, no. 1 (January 2014): 36–44. http://dx.doi.org/10.1139/cjfr-2013-0210.

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Terrestrial gastropods are important decomposers, herbivores, and prey items in forest systems and constitute a poorly understood element of forest biodiversity in Canada. We sampled terrestrial gastropod assemblages in northwestern Alberta, Canada, using board traps and forest floor sampling to examine their association with forest composition, structure, and environment (forest floor depth and moisture, coarse woody debris, understory vegetation cover) in four boreal mixedwood cover types: broadleaf (deciduous) dominated (DDOM), broadleaf (deciduous) dominated with coniferous understory (DDO
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3

Huesca, Margarita, Keely L. Roth, Mariano García, and Susan L. Ustin. "Discrimination of Canopy Structural Types in the Sierra Nevada Mountains in Central California." Remote Sensing 11, no. 9 (May 8, 2019): 1100. http://dx.doi.org/10.3390/rs11091100.

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Accurate information about ecosystem structure and biogeochemical properties is essential to providing better estimates ecosystem functioning. Airborne LiDAR (light detection and ranging) is the most accurate way to retrieve canopy structure. However, accurately obtaining both biogeochemical traits and structure parameters requires concurrent measurements from imaging spectrometers and LiDARs. Our main objective was to evaluate the use of imaging spectroscopy (IS) to provide vegetation structural information. We developed models to estimate structural variables (i.e., biomass, height, vegetati
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4

Hastings, Jack H., Scott V. Ollinger, Andrew P. Ouimette, Rebecca Sanders-DeMott, Michael W. Palace, Mark J. Ducey, Franklin B. Sullivan, David Basler, and David A. Orwig. "Tree Species Traits Determine the Success of LiDAR-Based Crown Mapping in a Mixed Temperate Forest." Remote Sensing 12, no. 2 (January 17, 2020): 309. http://dx.doi.org/10.3390/rs12020309.

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The ability to automatically delineate individual tree crowns using remote sensing data opens the possibility to collect detailed tree information over large geographic regions. While individual tree crown delineation (ITCD) methods have proven successful in conifer-dominated forests using Light Detection and Ranging (LiDAR) data, it remains unclear how well these methods can be applied in deciduous broadleaf-dominated forests. We applied five automated LiDAR-based ITCD methods across fifteen plots ranging from conifer- to broadleaf-dominated forest stands at Harvard Forest in Petersham, MA, U
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5

Milios, Elias, Kyriaki Kitikidou, and Kalliopi Radoglou. "New Silvicultural Treatments for Conifer Peri-Urban Forests Having Broadleaves in the Understory - The First Application in the Peri-Urban of Xanthi in Northeastern Greece." South-east European forestry 10, no. 2 (October 31, 2019): 107–16. http://dx.doi.org/10.15177/seefor.19-16.

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Background and Purpose: In Greece, forest practice did not develop special silvicultural treatments for planted conifer peri-urban forests where broadleaf trees appear as natural regeneration in the understory. The aims of this study are: a) to analyze the new proposed selective silvicultural treatments for the planted peri-urban forest of Xanthi and for analogous planted conifer forests, where broadleaf trees are naturally established in the understory b) to check the research hypothesis that the new selective silvicultural treatments exhibited higher intensity in terms of the basal area of c
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6

Hawkins, C. D. B., A. Dhar, and B. J. Rogers. "How much birch (Betula papyrifera) is too much for maximizing spruce (Picea glauca) growth: a case study in boreal spruce plantation forests." Journal of Forest Science 58, No. 7 (July 27, 2012): 314–27. http://dx.doi.org/10.17221/8/2012-jfs.

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Interest in conifer-broadleaf mixedwood forests has greatly increased due to continuous demand for hardwood products and a shift towards more biological or ecosystem-based management. In British Columbia, more than 30% of the productive forest land is a conifer–broadleaf mixture and current forest regulations are more conifer biased rather than maintaining a mixed-species condition. The aim of this study was to examine the impact of paper birch on white spruce growth. Spruce growth data from 10 to 18 years old complex stands indicate that radial, height, and stem volume was not impac
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7

Bjerreskov, Kristian Skau, Thomas Nord-Larsen, and Rasmus Fensholt. "Classification of Nemoral Forests with Fusion of Multi-Temporal Sentinel-1 and 2 Data." Remote Sensing 13, no. 5 (March 3, 2021): 950. http://dx.doi.org/10.3390/rs13050950.

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Mapping forest extent and forest cover classification are important for the assessment of forest resources in socio-economic as well as ecological terms. Novel developments in the availability of remotely sensed data, computational resources, and advances in areas of statistical learning have enabled the fusion of multi-sensor data, often yielding superior classification results. Most former studies of nemoral forests fusing multi-sensor and multi-temporal data have been limited in spatial extent and typically to a simple classification of landscapes into major land cover classes. We hypothesi
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8

Brassard, Brian W., Han Y. H. Chen, Jian R. Wang, and Peter N. Duinker. "Effects of time since stand-replacing fire and overstory composition on live-tree structural diversity in the boreal forest of central Canada." Canadian Journal of Forest Research 38, no. 1 (January 2008): 52–62. http://dx.doi.org/10.1139/x07-125.

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Stand structure diversity is hypothesized (i) to increase with stand development and (ii) to be greater in mixedwood stands than in conifer and broadleaf stands. We examined the effects of time since stand-replacing fire (TSF) and overstory type on stand volume, stand density, and tree-size variability, which is measured using Shannon’s diversity index (H′) and coefficient of variation, in fire-origin boreal forest stands. We sampled 36 stands representing conifer, mixedwood, and broadleaf overstory types, ranging in ages from 72 to 201 years TSF on upland mesic sites in northwestern Ontario,
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9

Schumacher, Johannes, Margret Rattay, Melanie Kirchhöfer, Petra Adler, and Gerald Kändler. "Combination of Multi-Temporal Sentinel 2 Images and Aerial Image Based Canopy Height Models for Timber Volume Modelling." Forests 10, no. 9 (August 30, 2019): 746. http://dx.doi.org/10.3390/f10090746.

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Multi-temporal Sentinel 2 optical images and 3D photogrammetric point clouds can be combined to enhance the accuracy of timber volume models on large spatial scale. Information on the proportion of broadleaf and conifer trees improves timber volume models obtained from 3D photogrammetric point clouds. However, the broadleaf-conifer information cannot be obtained from photogrammetric point clouds alone. Furthermore, spectral information of aerial images is too inconsistent to be used for automatic broadleaf-conifer classification over larger areas. In this study we combined multi-temporal Senti
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10

Jayathunga, Sadeepa, Toshiaki Owari, and Satoshi Tsuyuki. "Digital Aerial Photogrammetry for Uneven-Aged Forest Management: Assessing the Potential to Reconstruct Canopy Structure and Estimate Living Biomass." Remote Sensing 11, no. 3 (February 8, 2019): 338. http://dx.doi.org/10.3390/rs11030338.

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Scientifically robust yet economical and efficient methods are required to gather information about larger areas of uneven-aged forest resources, particularly at the landscape level, to reduce deforestation and forest degradation and to support the sustainable management of forest resources. In this study, we examined the potential of digital aerial photogrammetry (DAP) for assessing uneven-aged forest resources. Specifically, we tested the performance of biomass estimation by varying the conditions of several factors, e.g., image downscaling, vegetation metric extraction (point cloud- and can
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11

Yang, Qiuli, Yanjun Su, Shichao Jin, Maggi Kelly, Tianyu Hu, Qin Ma, Yumei Li, et al. "The Influence of Vegetation Characteristics on Individual Tree Segmentation Methods with Airborne LiDAR Data." Remote Sensing 11, no. 23 (December 3, 2019): 2880. http://dx.doi.org/10.3390/rs11232880.

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This study investigated the effects of forest type, leaf area index (LAI), canopy cover (CC), tree density (TD), and the coefficient of variation of tree height (CVTH) on the accuracy of different individual tree segmentation methods (i.e., canopy height model, pit-free canopy height model (PFCHM), point cloud, and layer stacking seed point) with LiDAR data. A total of 120 sites in the Sierra Nevada Forest (California) and Shavers Creek Watershed (Pennsylvania) of the United States, covering various vegetation types and characteristics, were used to analyze the performance of the four selected
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12

Clyne, Ailís B., Natalie L. Cleavitt, and Timothy J. Fahey. "Terrestrial Gastropod Grazing on Macrolichens in a Northern Broadleaf–Conifer Forest." Northeastern Naturalist 26, no. 2 (April 26, 2019): 261. http://dx.doi.org/10.1656/045.026.0203.

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13

Nagel, Thomas A., Jurij Diaci, Klemen Jerina, Milan Kobal, and Dusan Rozenbergar. "Simultaneous influence of canopy decline and deer herbivory on regeneration in a conifer–broadleaf forest." Canadian Journal of Forest Research 45, no. 3 (March 2015): 266–75. http://dx.doi.org/10.1139/cjfr-2014-0249.

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Understanding how forests respond to multiple disturbances is becoming increasingly important under global change. We examined the simultaneous influence of canopy decline and deer browsing on regeneration in an old-growth reserve and surrounding managed forest dominated by Fagus sylvatica L. and Abies alba Mill. in Slovenia. We quantified both disturbance processes by measuring characteristics of canopy gaps and reconstructing historical deer densities. Forest response was assessed with repeated measurements of tree regeneration and regeneration patterns within deer exclosures. Most gaps were
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14

Varin, Mathieu, Bilel Chalghaf, and Gilles Joanisse. "Object-Based Approach Using Very High Spatial Resolution 16-Band WorldView-3 and LiDAR Data for Tree Species Classification in a Broadleaf Forest in Quebec, Canada." Remote Sensing 12, no. 18 (September 21, 2020): 3092. http://dx.doi.org/10.3390/rs12183092.

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Species identification in Quebec, Canada, is usually performed with photo-interpretation at the stand level, and often results in a lack of precision which affects forest management. Very high spatial resolution imagery, such as WorldView-3 and Light Detection and Ranging have the potential to overcome this issue. The main objective of this study is to map 11 tree species at the tree level using an object-based approach. For modeling, 240 variables were derived from WorldView-3 with pixel-based and arithmetic feature calculation techniques. A global approach (11 species) was compared to a hier
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15

Belyaeva, N. G., and T. V. Chernen’kova. "Relationship between Habitat Properties and Composition of Communities in Conifer–Broadleaf Forest." Russian Journal of Ecology 49, no. 2 (March 2018): 111–18. http://dx.doi.org/10.1134/s1067413618020042.

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16

Shiryaeva, O. S., and M. A. Palamarchuk. "New data on agaricoid fungi (Basidiomycota) of the Urals." Novosti sistematiki nizshikh rastenii 53, no. 1 (2019): 89–106. http://dx.doi.org/10.31111/nsnr/2019.53.1.89.

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Thirty six species of agaricoid fungi are reported for the first time for the Urals including 15 species new for the Komi Republic and 19 species new for the Sverdlovsk Region. They were found mostly in natural habitats: mountain tundra (3 species), mountain forest-tundra (3), the northern boreal forests of the mountains and their foothill (12), the middle boreal forests of the mountains (1), the southern boreal forests of the foothill of the Urals (2), the hemiboreal broadleaf-conifer forests (4), the hemiboreal pine and birch forests of the foothill of the Urals (1), the forest-steppe (1), a
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17

Herrmann, Steffen, Malgorzata Conder, and Peter Brang. "Totholzvolumen und -qualität in ausgewählten Schweizer Naturwaldreservaten." Schweizerische Zeitschrift fur Forstwesen 163, no. 6 (June 1, 2012): 222–31. http://dx.doi.org/10.3188/szf.2012.0222.

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Deadwood volume and quality in selected swiss natural forest reserves Deadwood is structurally and functionally important for forest ecosystems. To date, there are hardly any data on the amount of deadwood in Swiss natural forests which can serve as reference value for deadwood management in managed forests. In this study, deadwood volumes and qualities (sizes, broadleaf/conifer ratios, decomposition stages) from six natural forest reserves were analysed and compared with data from managed forests as well as from natural and virgin forests. An average of 69 m3/ha with a broadleaf proportion of
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18

Deng, Jiaojiao, You Yin, Jiyao Luo, Wenxu Zhu, and Yongbin Zhou. "Different revegetation types alter soil physical-chemical characteristics and fungal community in the Baishilazi Nature Reserve." PeerJ 6 (January 11, 2019): e6251. http://dx.doi.org/10.7717/peerj.6251.

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The effects of different revegetation types on soil physical–chemical characteristics and fungal community diversity and composition of soils sampled from five different revegetation types (JM, Juglans mandshurica; QM, Quercus mongolica; conifer-broadleaf forest (CB); LG, Larix gmelinii; PK, Pinus koraiensis) in the Baishilazi Nature Reserve were determined. Soil fungal communities were assessed employing ITS rRNA Illunima Miseq high-throughput sequencing. Responses of the soil fungi community to soil environmental factors were assessed through canonical correspondence analysis (CCA) and Pears
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19

Deng, Jiaojiao, Wenxu Zhu, Yongbin Zhou, and You Yin. "Soil Organic Carbon Chemical Functional Groups under Different Revegetation Types Are Coupled with Changes in the Microbial Community Composition and the Functional Genes." Forests 10, no. 3 (March 8, 2019): 240. http://dx.doi.org/10.3390/f10030240.

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Different revegetatiom types can affect the chemical composition of soil organic carbon (SOC), soil microbial community and the functional genes related to carbon cycle. However, the relationships between SOC chemical functional groups and soil microbial communities and the functional genes remains poorly unclear under different revegetation types. Using the solid-state 13C nuclear magnetic resonance (NMR) spectroscopy, we examined changes in the SOC chemical composition of five soils (0–10 cm depth) from Larix gmelinii Rupr. (LG), Pinus koraiensis Sieb. (PK), Quercus mongolica Fisch. (QM), Ju
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20

Maleki, Kobra, Freddy Nguema Allogo, and Benoit Lafleur. "Natural Regeneration Following Partial and Clear-Cut Harvesting in Mature Aspen-Jack Pine Stands in Eastern Canada." Forests 11, no. 7 (July 8, 2020): 741. http://dx.doi.org/10.3390/f11070741.

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Over the last three decades, the ecological basis for the generalized use of even-aged silviculture in boreal forests has been increasingly challenged. In boreal mixed-wood landscapes, the diminishing proportion of conifers, to the benefit of intolerant hardwoods, has been a primary concern, coupled with the general rarefication of old-growth conifer-dominated stands. In this context, partial cutting, extended rotations and forest renewal techniques that eliminate or reduce regenerating hardwoods have been proposed as means of regaining greater conifer cover. As a result, experimentation and i
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21

Felton, Adam, Per-Ola Hedwall, Renats Trubins, Jakob Lagerstedt, Annika Felton, and Matts Lindbladh. "From mixtures to monocultures: Bird assemblage responses along a production forest conifer-broadleaf gradient." Forest Ecology and Management 494 (August 2021): 119299. http://dx.doi.org/10.1016/j.foreco.2021.119299.

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22

Jayathunga, Sadeepa, Toshiaki Owari, Satoshi Tsuyuki, and Yasumasa Hirata. "Potential of UAV photogrammetry for characterization of forest canopy structure in uneven-aged mixed conifer–broadleaf forests." International Journal of Remote Sensing 41, no. 1 (August 1, 2019): 53–73. http://dx.doi.org/10.1080/01431161.2019.1648900.

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23

Nainar, Anand, Koju Kishimoto, Koichi Takahashi, Mie Gomyo, and Koichiro Kuraji. "How Do Ground Litter and Canopy Regulate Surface Runoff?—A Paired-Plot Investigation after 80 Years of Broadleaf Forest Regeneration." Water 13, no. 9 (April 27, 2021): 1205. http://dx.doi.org/10.3390/w13091205.

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Relatively minimal attention has been given to the hydrology of natural broadleaf forests compared to conifer plantations in Japan. We investigated the impacts of ground litter removal and forest clearing on surface runoff using the paired runoff plot approach. Plot A (7.4 m2) was maintained as a control while plot B (8.1 m2) was manipulated. Surface runoff was measured by a tipping-bucket recorder, and rainfall by a tipping-bucket rain gauge. From May 2016 to July 2019, 20, 54, and 42 runoff events were recorded in the no-treatment (NT), litter removed before clearcutting (LRBC), and after cl
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Marchioro, Matteo, Davide Rassati, Massimo Faccoli, Kate Van Rooyen, Chantelle Kostanowicz, Vincent Webster, Peter Mayo, and Jon Sweeney. "Maximizing Bark and Ambrosia Beetle (Coleoptera: Curculionidae) Catches in Trapping Surveys for Longhorn and Jewel Beetles." Journal of Economic Entomology 113, no. 6 (September 23, 2020): 2745–57. http://dx.doi.org/10.1093/jee/toaa181.

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Abstract Bark and ambrosia beetles are commonly moved among continents within timber and fresh wood-packaging materials. Routine visual inspections of imported commodities are often complemented with baited traps set up in natural areas surrounding entry points. Given that these activities can be expensive, trapping protocols that attract multiple species simultaneously are needed. Here we investigated whether trapping protocols commonly used to detect longhorn beetles (Coleoptera: Cerambycidae) and jewel beetles (Coleoptera: Buprestidae) can be exploited also for detecting bark and ambrosia b
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Axelson, Jodi N., Brad C. Hawkes, Lara van Akker, and René I. Alfaro. "Stand dynamics and the mountain pine beetle — 30 years of forest change in Waterton Lakes National Park, Alberta, Canada." Canadian Journal of Forest Research 48, no. 10 (October 2018): 1159–70. http://dx.doi.org/10.1139/cjfr-2018-0161.

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The mountain pine beetle (MPB; Dendroctonus ponderosae Hopkins) is a native bark beetle and a major disturbance agent in western North American forests. In the 1970s and 1980s, a MPB outbreak occurred in Waterton Lakes National Park (WLNP) in southwestern Alberta. The MPB outbreak resulted in variable levels of mortality of mature lodgepole pine (Pinus contorta var. latifolia Engelm. ex S. Watson), reducing density, volume, and basal area of overstory trees. By 2010, lodgepole pine was proportionally no longer the dominant overstory species, with increases in non-pine conifer and broadleaf spe
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26

Bansal, Sheel, Till Jochum, David A. Wardle, and Marie-Charlotte Nilsson. "The interactive effects of surface-burn severity and canopy cover on conifer and broadleaf tree seedling ecophysiology." Canadian Journal of Forest Research 44, no. 9 (September 2014): 1032–41. http://dx.doi.org/10.1139/cjfr-2014-0112.

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Fire has an important role for regeneration of many boreal forest tree species, and this includes both wildfire and prescribed burning following clear-cutting. Depending on the severity, fire can have a variety of effects on above- and below-ground properties that impact tree seedling establishment. Very little is known about the impacts of ground fire severity on post-fire seedling performance, or how the effects of fire severity interact with those of canopy structure. We conducted a full-factorial experiment that manipulated surface-burn severity (no burn; light, medium, or heavy burn; or s
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27

Seely, B., C. Hawkins, J. A. Blanco, C. Welham, and J. P. Kimmins. "Evaluation of a mechanistic approach to mixedwood modelling." Forestry Chronicle 84, no. 2 (April 1, 2008): 181–93. http://dx.doi.org/10.5558/tfc84181-2.

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Mixed conifer–broadleaf forests (mixedwoods), covering more than a third of the productive forest landbase in BC, are highly valuable both as sources of fibre and as areas rich in biodiversity. In recognition of the multiple benefits of this forest type, management paradigms have transitioned from a focus on promoting conifer plantations in mixedwood areas to the management of intimate mixtures. The exceptionally dynamic growth properties and species interactions in mixedwood forests present a challenge for projecting the growth and development of different types of mixedwoods and their respon
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Stephens, Jaime L., Ian J. Ausprey, Nathaniel E. Seavy, and John D. Alexander. "Fire severity affects mixed broadleaf–conifer forest bird communities: Results for 9 years following fire." Condor 117, no. 3 (August 2015): 430–46. http://dx.doi.org/10.1650/condor-14-58.1.

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29

Huesca, Margarita, Mariano García, Keely L. Roth, Angeles Casas, and Susan L. Ustin. "Canopy structural attributes derived from AVIRIS imaging spectroscopy data in a mixed broadleaf/conifer forest." Remote Sensing of Environment 182 (September 2016): 208–26. http://dx.doi.org/10.1016/j.rse.2016.04.020.

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Namikawa, Kanji, Shingo Okamoto, and Junji Sano. "Edaphic controls on mosaic structure of the mixed deciduous broadleaf/conifer forest in northern Japan." Forest Ecology and Management 127, no. 1-3 (March 2000): 169–79. http://dx.doi.org/10.1016/s0378-1127(99)00128-0.

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Parent, Sylvain, and Christian Messier. "A simple and efficient method to estimate microsite light availability under a forest canopy." Canadian Journal of Forest Research 26, no. 1 (January 1, 1996): 151–54. http://dx.doi.org/10.1139/x26-017.

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This study presents a new, simple, and efficient method for estimating microsite light availability in the understory of a forest. The percentage of above-canopy photosynthetic photon flux density (%PPFD) transmitted above 16 microsites in the understory of a mixed conifer–broadleaf forest was measured every minute between 07:00 and 19:00 for both a completely overcast and a cloudless day. Instantaneous measures of %PPFD were also taken at different times on 3 overcast days. The instantaneous measures of %PPFD were strongly and directly related (P < 0.001) among themselves and with mean dai
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Moe, Kyaw Thu, and Toshiaki Owari. "Sustainability of High-Value Timber Species in Mixed Conifer–Broadleaf Forest Managed under Selection System in Northern Japan." Forests 11, no. 5 (April 25, 2020): 484. http://dx.doi.org/10.3390/f11050484.

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Understanding the sustainability of high-value timber species in managed forests provides useful information for the management of these species in the long-run. Using nearly 50 years of census data in long-term permanent plots, we investigated the sustainability of three high-value timber species—monarch birch (Betula maximowicziana Regel), castor aralia (Kalopanax septemlobus (Thunb.) Koidz), and Japanese oak (Quercus crispula Blume)—in cool-temperate mixed forest under a selection system in northern Japan. We used stocking, demographic parameters, and species proportions of these species as
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Pang, Yue, Jing Tian, Xuan Zhao, Zhi Chao, Yuchao Wang, Xinping Zhang, and Dexiang Wang. "The linkages of plant, litter and soil C:N:P stoichiometry and nutrient stock in different secondary mixed forest types in the Qinling Mountains, China." PeerJ 8 (June 3, 2020): e9274. http://dx.doi.org/10.7717/peerj.9274.

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Background Carbon (C), nitrogen (N) and phosphorus (P) stoichiometric ratios are important indicators of ecosystem function and productivity. However, few studies have assessed the nutrient relationship between plant, litter and soil, and the nutrient stock in different secondary mixed forest types. Methods We investigated the C, N and P concentrations and stoichiometric ratios in trees, understory plants, litter and soil layers in three different secondary mixed forest types (broadleaf mixed forests (BM), broadleaf-conifer mixed forests (BCM) and coniferous mixed forests (CM)) in the Qinling
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Jackson, Toby D., Sarab Sethi, Ebba Dellwik, Nikolas Angelou, Amanda Bunce, Tim van Emmerik, Marine Duperat, et al. "The motion of trees in the wind: a data synthesis." Biogeosciences 18, no. 13 (July 6, 2021): 4059–72. http://dx.doi.org/10.5194/bg-18-4059-2021.

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Abstract. Interactions between wind and trees control energy exchanges between the atmosphere and forest canopies. This energy exchange can lead to the widespread damage of trees, and wind is a key disturbance agent in many of the world's forests. However, most research on this topic has focused on conifer plantations, where risk management is economically important, rather than broadleaf forests, which dominate the forest carbon cycle. This study brings together tree motion time-series data to systematically evaluate the factors influencing tree responses to wind loading, including data from
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Lin, Chinsu, Siao-En Ma, Li-Ping Huang, Chung-I. Chen, Pei-Ting Lin, Zhih-Kai Yang, and Kuan-Ting Lin. "Generating a Baseline Map of Surface Fuel Loading Using Stratified Random Sampling Inventory Data through Cokriging and Multiple Linear Regression Methods." Remote Sensing 13, no. 8 (April 17, 2021): 1561. http://dx.doi.org/10.3390/rs13081561.

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Surface fuel loading is a key factor in controlling wildfires and planning sustainable forest management. Spatially explicit maps of surface fuel loading can highlight the risks of a forest fire. Geospatial information is critical in enabling careful use of deliberate fire setting and also helps to minimize the possibility of heat conduction over forest lands. In contrast to lidar sensing and/or optical sensing based methods, an approach of integrating in-situ fuel inventory data, geospatial interpolation techniques, and multiple linear regression methods provides an alternative approach to su
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Seavy, Nathaniel E., and John D. Alexander. "Interactive effects of vegetation structure and composition describe bird habitat associations in mixed broadleaf-conifer forest." Journal of Wildlife Management 75, no. 2 (February 2011): 344–52. http://dx.doi.org/10.1002/jwmg.37.

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37

Jackson, T., A. Shenkin, J. Moore, A. Bunce, T. van Emmerik, B. Kane, D. Burcham, et al. "An architectural understanding of natural sway frequencies in trees." Journal of The Royal Society Interface 16, no. 155 (June 2019): 20190116. http://dx.doi.org/10.1098/rsif.2019.0116.

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The relationship between form and function in trees is the subject of a longstanding debate in forest ecology and provides the basis for theories concerning forest ecosystem structure and metabolism. Trees interact with the wind in a dynamic manner and exhibit natural sway frequencies and damping processes that are important in understanding wind damage. Tree-wind dynamics are related to tree architecture, but this relationship is not well understood. We present a comprehensive view of natural sway frequencies in trees by compiling a dataset of field measurement spanning conifers and broadleav
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Simard, Suzanne W., Shannon M. Hagerman, Donald L. Sachs, Jean L. Heineman, and W. Jean Mather. "Conifer growth, Armillaria ostoyae root disease, and plant diversity responses to broadleaf competition reduction in mixed forests of southern interior British Columbia." Canadian Journal of Forest Research 35, no. 4 (April 1, 2005): 843–59. http://dx.doi.org/10.1139/x05-010.

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Broadleaf trees are routinely removed from conifer plantations during vegetation management treatments, but whether the removal increases tree productivity or affects root disease and plant diversity is unknown. The effects of manual and chemical reduction of paper birch (Betula papyrifera Marsh.) and trembling aspen (Populus tremuloides Michx.) on conifer survival, growth, root disease incidence, and plant community diversity were investigated for 5 years in Douglas-fir (Pseudotsuga menziesii var. glauca (Beissn.) Franco) and lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engel
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Liu, Qiang, Yue Sun, Gerong Wang, Fushan Cheng, and Fucai Xia. "Short-term effects of thinning on the understory natural environment of mixed broadleaf-conifer forest in Changbai Mountain area, Northeast China." PeerJ 7 (July 26, 2019): e7400. http://dx.doi.org/10.7717/peerj.7400.

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Background The understory natural environment is critical in affecting the succession and recovery process of vegetation, stand structure, and species composition of forest. The thinning intensity could significantly change the forest microclimates and soil properties, therefore, to analyze the effects of thinning intensity on the understory natural environment of forest is of important significance for promoting the ecological benefits of thinning. Methods A total of 16 fixed sample plots with different thinning intensities were established in the mixed broadleaf-conifer forest in Jiaohe, sit
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Abdollahnejad, Azadeh, and Dimitrios Panagiotidis. "Tree Species Classification and Health Status Assessment for a Mixed Broadleaf-Conifer Forest with UAS Multispectral Imaging." Remote Sensing 12, no. 22 (November 12, 2020): 3722. http://dx.doi.org/10.3390/rs12223722.

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Automatic discrimination of tree species and identification of physiological stress imposed on forest trees by biotic factors from unmanned aerial systems (UAS) offers substantial advantages in forest management practices. In this study, we aimed to develop a novel workflow for facilitating tree species classification and the detection of healthy, unhealthy, and dead trees caused by bark beetle infestation using ultra-high resolution 5-band UAS bi-temporal aerial imagery in the Czech Republic. The study is divided into two steps. We initially classified the tree type, either as broadleaf or co
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Jakoby, Gilad, Ido Rog, Shacham Megidish, and Tamir Klein. "Enhanced root exudation of mature broadleaf and conifer trees in a Mediterranean forest during the dry season." Tree Physiology 40, no. 11 (July 24, 2020): 1595–605. http://dx.doi.org/10.1093/treephys/tpaa092.

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Abstract Root exudates are part of the rhizodeposition process, which is the major source of soil organic carbon (C) released by plant roots. This flux of C is believed to have profound effects on C and nutrient cycling in ecosystems. The quantity of root exudates depends on the plant species, the period throughout the year, and external biotic and abiotic factors. Since root exudates of mature trees are difficult to collect in field conditions, very little is known about their flux, especially in water-limited ecosystems, such as the seasonally hot and dry Mediterranean maquis. Here, we colle
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Jayathunga, Sadeepa, Toshiaki Owari, and Satoshi Tsuyuki. "Analysis of forest structural complexity using airborne LiDAR data and aerial photography in a mixed conifer–broadleaf forest in northern Japan." Journal of Forestry Research 29, no. 2 (June 9, 2017): 479–93. http://dx.doi.org/10.1007/s11676-017-0441-4.

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Leonelli, Giovanni, Anna Coppola, Maria Cristina Salvatore, Carlo Baroni, Giovanna Battipaglia, Tiziana Gentilesca, Francesco Ripullone, et al. "Climate signals in a multispecies tree-ring network from central and southern Italy and reconstruction of the late summer temperatures since the early 1700s." Climate of the Past 13, no. 11 (November 2, 2017): 1451–71. http://dx.doi.org/10.5194/cp-13-1451-2017.

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Abstract. A first assessment of the main climatic drivers that modulate the tree-ring width (RW) and maximum latewood density (MXD) along the Italian Peninsula and northeastern Sicily was performed using 27 forest sites, which include conifers (RW and MXD) and broadleaves (only RW). Tree-ring data were compared using the correlation analysis of the monthly and seasonal variables of temperature, precipitation and standardized precipitation index (SPI, used to characterize meteorological droughts) against each species-specific site chronology and against the highly sensitive to climate (HSTC) ch
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Moe, Kyaw Thu, Toshiaki Owari, Naoyuki Furuya, Takuya Hiroshima, and Junko Morimoto. "Application of UAV Photogrammetry with LiDAR Data to Facilitate the Estimation of Tree Locations and DBH Values for High-Value Timber Species in Northern Japanese Mixed-Wood Forests." Remote Sensing 12, no. 17 (September 3, 2020): 2865. http://dx.doi.org/10.3390/rs12172865.

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High-value timber species play an important economic role in forest management. The individual tree information for such species is necessary for practical forest management and for conservation purposes. Digital aerial photogrammetry derived from an unmanned aerial vehicle (UAV-DAP) can provide fine spatial and spectral information, as well as information on the three-dimensional (3D) structure of a forest canopy. Light detection and ranging (LiDAR) data enable area-wide 3D tree mapping and provide accurate forest floor terrain information. In this study, we evaluated the potential use of UAV
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Cook, Rachel L., Dan Binkley, João Carlos T. Mendes, and Jose Luiz Stape. "Soil carbon stocks and forest biomass following conversion of pasture to broadleaf and conifer plantations in southeastern Brazil." Forest Ecology and Management 324 (July 2014): 37–45. http://dx.doi.org/10.1016/j.foreco.2014.03.019.

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Jaramillo, Fernando, Neil Cory, Berit Arheimer, Hjalmar Laudon, Ype van der Velde, Thomas B. Hasper, Claudia Teutschbein, and Johan Uddling. "Dominant effect of increasing forest biomass on evapotranspiration: interpretations of movement in Budyko space." Hydrology and Earth System Sciences 22, no. 1 (January 23, 2018): 567–80. http://dx.doi.org/10.5194/hess-22-567-2018.

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Abstract. During the last 6 decades, forest biomass has increased in Sweden mainly due to forest management, with a possible increasing effect on evapotranspiration. However, increasing global CO2 concentrations may also trigger physiological water-saving responses in broadleaf tree species, and to a lesser degree in some needleleaf conifer species, inducing an opposite effect. Additionally, changes in other forest attributes may also affect evapotranspiration. In this study, we aimed to detect the dominating effect(s) of forest change on evapotranspiration by studying changes in the ratio of
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Cárcamo, H. A., T. A. Abe, C. E. Prescott, F. B. Holl, and C. P. Chanway. "Influence of millipedes on litter decomposition, N mineralization, and microbial communities in a coastal forest in British Columbia, Canada." Canadian Journal of Forest Research 30, no. 5 (May 1, 2000): 817–26. http://dx.doi.org/10.1139/x00-014.

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Laboratory experiments were conducted with the millipede Harpaphe haydeniana haydeniana Wood (Polydesmida: Xystodesmidae) to determine (i) its litter feeding preferences, (ii) rates of leaf litter consumption, (iii) feeding effects on available nitrogen, and (iv) functional microbial diversity. The millipede exhibited a preference for Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) and, to a lesser extent, Sitka spruce (Picea sitchensis (Bong.) Carrière) litter compared with western hemlock (Tsuga heterophylla (Raf.) Sarg.) and western redcedar (Thuja plicata Donn ex D. Don) litter when giv
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Ellis, Tana M., Andrew J. Kroll, and Matthew G. Betts. "Early seral hardwood vegetation increases adult and fledgling bird abundance in Douglas-fir plantations of the Oregon Coast Range, USA." Canadian Journal of Forest Research 42, no. 5 (May 2012): 918–33. http://dx.doi.org/10.1139/x2012-035.

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Recent evidence suggests that population declines of bird species associated with early-successional forest conditions may be associated with reduced quality of breeding habitat. Increasing intensity of forest management on private lands and decreased harvest rates on federal lands in the Pacific Northwest, USA, have resulted in a loss of diverse young forest stands, typically called early seral forest. Previous studies suggest that the amount of early seral broadleaf cover within conifer forests is linked to the composition of foliage-gleaning bird communities. However, information regarding
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Elliot, M. B., B. Striewski, J. R. Flenley, and D. G. Sutton. "Palynological and Sedimentological Evidence for a Radiocarbon Chronology of Environmental Change and Polynesian Deforestation from Lake Taumatawhana, Northland, New Zealand." Radiocarbon 37, no. 3 (1995): 899–916. http://dx.doi.org/10.1017/s0033822200014983.

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We present pollen diagrams and sedimentological analyses from a lake site within an extensive dune system on the Aupouri Peninsula, Northland. Five thousand years ago, a regional Agathis australis–podocarp-broadleaf forest dominated the vegetation, which manifested an increasing preponderance of conifer species. Climate was cooler and drier than at present. From ca. 3400 bp, warmth-loving species such as A. australis and drought-intolerant species, Dacrydium cupressinum and Ascarina lucida, became common, implying a warm and moist climate. The pollen record also suggests a windier climate. The
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Chandler, J. R., M. G. Schmidt, and S. Dragicevic. "Spatial patterns of forest floor properties and litterfall amounts associated with bigleaf maple in conifer forest of southwestern British Columbia." Canadian Journal of Soil Science 88, no. 3 (May 2, 2008): 295–313. http://dx.doi.org/10.4141/cjss07040.

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This study was aimed at detecting the spatial characteristics of forest floor properties and litterfall amounts related to bigleaf maple (Acer macrophyllum Pursh) within conifer forest. Two 36-m × 36-m plots, centered on individual dominant bigleaf maple stems, were sampled at 129 systematic locations and tested for forest floor pH, cation exchange capacity, exchangeable cations, and mineralizable N. Tree stem location, forest floor horizon depths and litterfall amounts were measured. The kriging approach was used to visualize overall spatial patterns, Moran's I was used to give a global measu
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