Results 41 to 50 of about 3,716 (159)
Analysis of Carbon Stock Evolution and Its Vulnerability Characteristics Based on Land Use Change in Guizhou Province [PDF]
, 2023 [Objective] The spatial and temporal distribution pattern and evolution characteristics of ecosystem carbon storage, its response to land use change, and the vulnerability of ecosystem carbon storage service in each county of Guizhou Province were ...
Chen Darong +5 more
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Shuitu Baochi Xuebao, 2017 通过室内模拟降雨试验，研究秸秆覆盖对西南岩溶区坡耕地产流产沙的影响。试验处理按照2个雨强（63，100 mm/h）和5个秸秆覆盖度水平（0，20%，50%，80%和100%）下进行。结果表明：在中雨强(63 mm/h)条件下，秸秆覆盖减少了地表径流的径流系数和径流强度，增加了壤中流径流系数和径流强度，在较大秸秆覆盖度下（50%，80%和100%），秸秆覆盖能有效减少土壤流失量；但在大雨强（100 mm/h）条件下，秸秆覆盖导致地表径流增加并同时显著减少了壤中流，地表径流的增加同时导致土壤流失量的增加。
徐勤学, 朱晓锋, 江斌伟
doaj
World Water Policy, Volume 12, Issue 1, February 2026.ABSTRACT Urban expansion significantly impacts flood risk, particularly in rapidly growing areas where impervious surfaces exacerbate surface runoff. This study examines spatial patterns of urban growth and their effects on flood exposure in Mecklenburg County, North Carolina, from 2011 to 2021.
Pegah Madadi, Azad Sadeghi
wiley +1 more source
Underrepresentation of bats in Africa's protected areas
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract Biodiversity is severely threatened globally, with habitat loss and other human pressures accelerating species extinctions. Protected areas (PAs) are a critical conservation tool; however, their effectiveness in safeguarding many taxa, such as bats, remains unclear.
Cecilia Montauban +9 more
wiley +1 more source
Shuitu Baochi Xuebao, 2019 为探究不同耕作方式农田土壤风蚀特征，揭示风蚀对表层土壤理化性质及养分含量的影响，以东北地区典型农田土壤（黑土和风沙土）为研究对象，通过野外集沙仪定点监测与室内理化分析等方法，对不同耕作方式（垄作、免耕）和不同地表覆盖措施（无覆盖、留茬、覆盖）下的土壤风蚀特征展开研究。结果表明：（1）风沙土的输沙量显著高于黑土，在0—100 cm高度范围内风沙土的输沙量平均为黑土的168倍。随高度的上升输沙量急剧减少，其中0—10 cm输沙量最大，占总输沙量的50%以上，40 cm以上则无明显风蚀物；（2）不同耕作方式下，
李胜龙 +4 more
doaj
Changes in Key Biodiversity Area networks following national comprehensive assessments
Conservation Biology, Volume 40, Issue 1, February 2026.Making comprehensive assessments of Key Biodiversity Area (KBA) networks in a country greatly increases their number and area. Countries that have not yet done so will be missing about half of these globally significant sites and missing the opportunity to get 30 × 30 conservation in the right places. Abstract Key Biodiversity Areas (KBAs) are sites of
Andrew J. Plumptre +46 more
wiley +1 more source
Analyzing the influence of non-landslide sample selection on landslide susceptibility: Case studies from Wenchuan, Lixian and Maoxian Counties [PDF]
This research explores the integration of machine learning in assessing landslide susceptibility, scrutinizing the selection of non-landslide samples.
Xiao LIU, Yu GONG
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Shuitu Baochi Xuebao, 2021 基于2018-2019年野外径流小区定位观测资料，以玉米单作无秸秆覆盖处理（M0）为对照，探索了玉米单作处理和不同秸秆覆盖量（M1~M5，1 111，2 222，3 889，5 556，6 944 kg/hm2）对贵州省黔西喀斯特区坡耕地产流产沙特征的影响。结果表明：（1）不同降雨等级下，秸秆覆盖具有较好的水土保持效果，并随覆盖量的增加，产流、产沙总量逐渐减少，但M4与M5处理之间无显著差异（p>0.05）；（2）玉米苗期—拔节期各处理产流和产沙量大于后2个阶段，并且各阶段各覆盖处理产流产沙均低于对照；（
盘礼东 +4 more
doaj
Administrative Burdens and Inequities in COBRA Take‐Up
World Medical &Health Policy, Volume 17, Issue 4, Page 658-668, December 2025.ABSTRACT To what extent does COBRA's lack of program visibility and complexity induce inequities in access to this form of health insurance? Though COBRA has long been an important tool for helping workers to avoid “job lock,” precious little scholarship has been devoted to understanding its reach.
Miranda Yaver
wiley +1 more source
Shuitu Baochi Xuebao, 2022 以2000—2020年MODIS-NDVI植被指数为数据源,反演计算黄土高原植被覆盖度,通过转移矩阵和重心迁移等方法分析黄土高原植被覆盖度时空格局变化及其与降水、气温、坡度和土壤类型等因素的关系。结果表明:(1)2000—2020年黄土高原植被覆盖度由0.39提高到0.61,整体呈上升趋势,2017年后实现快速提升;(2)近20年,黄土高原植被覆盖度显著好转类型与极显著好转类型改善面积比例达到37.93%,2009年前以低覆盖和中低覆盖植被为主,2010年后以中覆盖及更高等级覆盖植被为主 ...
王逸男 +4 more
doaj +2 more sources