Results 51 to 60 of about 1,909 (163)

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

不同植被覆盖度对紫色土坡面侵蚀过程的影响

open access: yesShuitu Baochi Xuebao, 2017
为研究植被覆盖度对紫色土坡面侵蚀过程的影响,探讨有效控制水土流失的坡面植被临界盖度问题,利用人工模拟降雨试验与室内分析相结合的方法对紫色土坡面侵蚀过程进行分析。结果表明:(1)总体上,紫色土坡面产流量随植被覆盖度的增大而减小,二者之间呈现线性负相关,但是植被覆盖度在25%以下,径流量变化不明显,植被覆盖度达75%时,径流量处于较低的稳定值,明显低于植被覆盖度0%,25%,50%;(2)坡面侵蚀泥沙量随植被覆盖度的增加而减少,二者呈现二次项相关(R2=0.99),植被覆盖度25%以下对坡面减沙起到重要作用,
戴金梅   +6 more
doaj  

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  

Trends of Desertification Change and Its Driving Factors in Aksu Region [PDF]

open access: yes, 2022
[Objective] The trend and driving factors of desertification change in the Aksu region from 2009 to 2019 were studied in order to provide a scientific basis for ecological restoration in the region and for formulating desertification control policies ...
Ran Yajun   +4 more
core   +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

膨润土改性沥青乳剂覆盖地面后的生物效应研究

open access: yesShuitu Baochi Xuebao, 2000
在山西省隰县的小区试验表明,膨润土改性沥青乳剂覆盖地面后,可以快速产生草本植被,在暴雨来临前夕植被盖度较高。同时,对覆盖后的地面径流、土壤含水量、土层温度作了观测,初步认为,草本植被的产生是由于覆盖后增温作用、保水作用以及两者的优势协调产生的。
殷海善 王改玲
doaj   +2 more sources

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  

Study on the Spatial and Temporal Changes of the Vegetation Cover and the Driving Factors in Panzhihua City from 1990 to 2020 [PDF]

open access: yes
[Objective] To investigate the spatial and temporal variations and the driving factors of the vegetation cover in Panzhihua City, and to provide a theoretical basis for Panzhihua City to formulate regional ecological environmental protection programs and
HE Shuqin   +3 more
core   +1 more source

Response and Recovery of Pinus Massoniana Populations to Drought in Erosion Zone of Changting County, Fujian Province [PDF]

open access: yes, 2022
[Objective] The response of the pioneer tree species Pinus massoniana to drought and subsequent recovery in the erosion zone of Changting County, Fujian Province was determined in order to provide scientific support for the recovery and reconstruction of
Cui Yujie   +5 more
core   +1 more source

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

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