Results 21 to 30 of about 2,030 (144)

World‐wide impacts of climate change and nitrogen deposition on vegetation structure, composition, and functioning of shrublands

open access: yesNew Phytologist, Volume 247, Issue 3, Page 1117-1128, August 2025.
Summary Environmental changes and their effects are among the most pressing topics of today's ecological research. Shrublands, although widespread across the globe, remain understudied in this respect. We conducted a global meta‐analysis of 81 shrubland sites subjected to experimental warming, shifts in precipitation (e.g.
Daijun Liu   +11 more
wiley   +1 more source

Agricultural Lands as Important Wintering Habitats for the Critically Endangered Yellow‐Breasted Bunting in Nepal 尼泊尔农业用地作为极危黄胸鹀的重要越冬栖息地

open access: yesIntegrative Conservation, Volume 4, Issue 2, Page 134-142, June 2025.
Our study addresses the significant knowledge gap regarding the wintering population and habitat utilization of the Yellow‐breasted Bunting (Emberiza aureola) in Nepal, providing crucial insights that can aid in the conservation of this critically endangered species in wintering grounds.
Hem Bahadur Katuwal   +6 more
wiley   +1 more source

模拟降雨下林下覆被结构对产流产沙过程的影响

open access: yesShuitu Baochi Xuebao, 2023
植被具有良好的水土保持效益,深入了解覆被结构特征与产流产沙关系是研究植被防蚀功能的基础。以鄂中地区典型森林植被为对象,通过人工模拟降雨试验研究5种覆被结构(灌木、草本、枯落物、灌木+草本、灌木+草本+枯落物)和侵蚀性降雨(60,90,120 mm/h)对坡面侵蚀产沙过程的影响。结果表明:(1)坡面产流率、产沙率随降雨时间先迅速增大,后缓慢增大,最后达到稳定趋势。降雨强度是坡面侵蚀产沙的主导因素,与产流时间、产流率和产沙率呈显著正相关关系(p<0.01)。(2)在有/无枯落物存在的情况下,植被覆盖度 ...
朱方方   +3 more
doaj  

Pre‐Monsoon Habitat Preference and Spatial Overlap Between Blue Sheep (Pseudois nayaur) and Livestock in Dhorpatan Hunting Reserve, Nepal 尼泊尔多尔帕坦狩猎保护区季风前岩羊 (Pseudois nayaur) 与家畜的栖息地偏好及空间重叠

open access: yesWildlife Letters, Volume 3, Issue 2, Page 73-83, June 2025.
Blue sheep in Dhorpatan Hunting Reserve prefer alpine grasslands at 3800–4200 m on south‐facing slopes near water resources, favoring areas with low tree cover and dense ground cover, particularly rhododendrons, junipers, and Cyperaceae grasses. Their habitat significantly overlaps with livestock.
Amit Adhikari   +4 more
wiley   +1 more source

雨强和植被覆盖度对红壤坡面产流产沙的影响

open access: yesShuitu Baochi Xuebao, 2019
为探究雨强和植被覆盖度对花岗岩红壤坡面产流产沙的影响,通过室内人工模拟降雨试验,分析了不同雨强(0.5,1.0,1.5 mm/min)和植被覆盖度(0,20%,40%,60%)下坡面侵蚀的产流、产沙规律及相关关系。结果表明:(1)同一雨强下,初始产流时间随植被覆盖度增加而延迟,并随雨强增大而提前,雨强越大,产流时间提前越明显)(2)各坡面径流率、侵蚀率随植被覆盖度增加而减小,且植被覆盖度越高,径流率和侵蚀率波动范围越小,侵蚀过程越稳定)(3)有植被覆盖的坡面,产沙主要以0.25 ...
常松涛   +7 more
doaj  

黄土残塬沟壑区范围界定及近21年来NDVI时空变化特征

open access: yesShuitu Baochi Xuebao, 2021
为探究黄土残塬沟壑区退耕还林(草)工程等林业生态工程实施后林业资源恢复情况,以黄土高原DEM数据及2000—2020年归一化植被指数NDVI数据为基础,采用地形因子计算、水文分析、空间叠加分析等方法,划分了较为完整的黄土残塬沟壑区的范围,并利用趋势分析法、变异系数的相关理论与方法,分析了近21年来黄土残塬沟壑区NDVI时空变化特征。结果表明:(1)黄土残塬沟壑区横跨山西、陕西和甘肃3省,面积约为2.99万km2,沟壑密度为1.91~3.21 km/km2;(2)黄土残塬沟壑区NDVI从时序变化上看 ...
刘泽晖, 毕华兴, 侯贵荣
doaj  

Effectiveness of protected areas in the Caucasus Mountains in preventing rangeland degradation

open access: yesConservation Biology, Volume 39, Issue 3, June 2025.
Abstract As land use intensifies globally, it increasingly exerts pressure on protected areas. Despite open, nonforested landscapes comprising up to 40% of protected areas globally, assessments have predominately focused on forests, overlooking the major pressures on rangelands from livestock overgrazing and land conversion.
Arash Ghoddousi   +12 more
wiley   +1 more source

不同植被空间配置下的坡面产沙及泥沙连通性变化特征

open access: yesShuitu Baochi Xuebao, 2023
植被是影响土壤侵蚀的重要因子,探讨坡面产沙和泥沙连通性对植被分布的响应对揭示土壤侵蚀过程机理及预测坡面侵蚀具有重要意义。通过室内人工放水冲刷试验,分析3种植被布设位置(坡上、坡中、坡下)在不同冲刷流量(3.2,5.2 L/min)和不同覆盖度(0,30%,50%,70%)下的减沙效益,结合坡面产沙潜力指数探究植被覆盖影响下的泥沙连通性变化特征。结果表明:(1)从不同盖度下的平均减沙效益及其稳定性来看,植被布局的减沙效益随盖度变化,且坡下植被空间分布最优。随冲刷流量增加,不同植被布局间的减沙效益差距缩小;(
边熇, 朱冰冰, 黎珩, 闫帅旗
doaj  

Threats posed by land use to water quality in South Africa's strategic water source areas

open access: yesWorld Water Policy, Volume 11, Issue 1, Page 155-164, February 2025.
Abstract Understanding the negative impacts of land use/land cover (LULC) on water quality is key to developing effective integrated catchment management strategies. However, in line with the Integrated Water Resources Management (IWRM) philosophy, this necessitates the generation and application of useful scientific knowledge, which stakeholders and ...
Kent Anson Locke, Kevin Winter
wiley   +1 more source

Integrating adult occurrence and reproduction data to identify conservation measures for amphibians

open access: yesConservation Biology, Volume 39, Issue 1, February 2025.
Abstract Monitoring programs are pivotal to establishing sound management. Due to economic, logistic, and time limitations, monitoring programs often overlook differences among life‐history stages. However, species occurrence does not necessarily mean population viability, and it is unclear to what extent monitoring programs that do not consider ...
Elia Lo Parrino   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy