Addressing regional relationships between white-tailed deer densities and land classes.
Addressing regional relationships between white-tailed deer densities and land classes.
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DOI：
10.1002/ece3.8084
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发表时间：
2021-10
影响因子：
2.6
通讯作者：
Hanberry BB
中科院分区：
文献类型：
--
作者：
Hanberry BB
在美国，白尾鹿 (Odocoileus virginianus) 的数量已恢复至约 3000 万只，但在恢复期间土地覆盖发生了变化。为了解决区域尺度上的鹿密度和当前土地覆盖之间的关系，我应用随机森林和极端梯度增强分类器来模拟低和高鹿密度类别，在两个不同的阈值（5.8和11.6鹿/平方公里），以及大约2003年三个地区的土地类别。对于划分为5.8鹿/平方公里的低和高鹿密度类别，总体上落叶阔叶林是最具影响力和积极的变量。中东部和中部地区以及东南部地区的作物和牧草是影响最大和负面的变量。所有地区的鹿密度随着落叶林和混交林、木本湿地和灌木面积的增加而增加。鹿的密度随着农作物面积的增加而减少，开放空间的开发，以及所有地区的中低住宅密度的发展。对于按 11.6 鹿/平方公里划分的密度等级，鹿密度与中东部地区的木本湿地、东南地区的混交林和落叶林以及中部地区的木本湿地和草本植被的关系最强。所有地区的落叶林和混交林、木本湿地和灌木丛都增加了鹿的密度。相反，鹿的密度随着草本植被和作物的增加而减少，并且所有地区的居住密度都较低。因此，在区域尺度上，鹿在森林和木本湿地中的总体密度较高，而在农业和住宅开发中的密度较低，这似乎并没有支持更多的鹿。鹿对森林的偏爱确实会导致对森林产品的损害，但另一方面，有些人可能认为鹿通过减少小树的数量提供重要的社会经济和生态服务，特别是在没有历史上控制树木生物量的其他干扰的情况下。在区域范围内，鹿在森林中的密度较高，而在农业和住宅开发中的密度较低，这并没有通过支持更多的鹿来改善栖息地。鹿对森林的偏爱确实会导致森林产品受损。然而，鹿通过减少小树的数量提供了重要的社会经济和生态服务，特别是在没有历史上控制树木生物量的其他干扰的情况下。
White‐tailed deer (Odocoileus virginianus) populations have recovered to about 30 million animals in the United States, but land cover has changed during the interval of recovery. To address the relationship between deer densities and current land cover at regional scales, I applied random forests and extreme gradient boosting classifiers to model low and high deer density classes, at two different thresholds (5.8 and 11.6 deer/km2), and land classes in three regions during approximately 2003. For low and high deer density classes divided at 5.8 deer/km2, deciduous broadleaf forest overall was the most influential and positive variable in the central east and central regions and crop and pasture were the most influential and negative variables in the southeast region. Deer density increased with area of deciduous and mixed forests, woody wetlands, and shrub in all regions. Deer density decreased with area of crop, developed open space, and developed low and medium residential density in all regions. For density classes divided at 11.6 deer/km2, deer density had the strongest relationship with woody wetlands in the central east region, mixed and deciduous forest in the southeast region, and woody wetlands and herbaceous vegetation in the central region. Deer density increased with deciduous and mixed forests, woody wetlands, and shrub in all regions. Conversely, deer density decreased with herbaceous vegetation, crop, and developed low residential densities in all regions. Therefore, at regional scales, deer overall occurred at greater densities in forests and woody wetlands and lower densities in agricultural and residential development, which did not appear to support more deer. Deer preference for forests does result in damage to forest products, but alternatively, some may consider that deer provide important socioeconomic and ecological services by reducing number of small trees, particularly in the absence of other disturbances that historically controlled tree biomass. At regional scales, deer occurred at greater densities in forests and lower densities in agricultural and residential development, which did not improve habitat by supporting more deer. Deer preference for forests does result in damage to forest products. However, deer provide important socioeconomic and ecological services by reducing number of small trees, particularly in the absence of other disturbances that historically controlled tree biomass.
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DOI：
10.1016/j.isprsjprs.2020.02.019
发表时间：
2020-04
影响因子：
12.7
作者：
Homer, Collin;Dewitz, Jon;Jin, Suming;Xian, George;Costello, Catherine;Danielson, Patrick;Gass, Leila;Funk, Michelle;Wickham, James;Stehman, Stephen;Auch, Roger;Riitters, Kurt
通讯作者：
Riitters, Kurt
影响因子：
2.9
作者：
Elliott, A. Blaine;Mini, Anne E.;Twedt, Daniel J.
通讯作者：
Twedt, Daniel J.
影响因子：
2.7
作者：
Lucas, Richard W.;Salguero-Gomez, Roberto;Casper, Brenda B.
通讯作者：
Casper, Brenda B.
影响因子：
1.5
作者：
Hanberry, Brice B.;Hanberry, Phillip
通讯作者：
Hanberry, Phillip
影响因子：
4.9
作者：
Pan, Y.;Chen, J. M.;Deng, F.
通讯作者：
Deng, F.