Results 31 to 40 of about 33,547 (96)
Genetic origins and climate‐induced erosion in economically important Asian walnuts
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract The global climate is undergoing unprecedented changes, posing significant threats to species persistence. However, the spatiotemporal impacts on genetic diversity remain poorly understood, hindering species conservation and management. Walnuts, generally referred to as Juglans regia and J. sigillata, are economically vital in Asia, but little
Peng‐Zhen Fan +17 more
wiley +1 more source
Latin American Policy, Volume 16, Issue 4, December 2025.ABSTRACT In recent years, video assistant referee systems have been increasingly used to correct unfair decisions in sports. Similarly, I argue that constitutional referendums play a corrective role in hybrid or competitive authoritarian regimes, where the electoral referee is biased and the government enjoys unfair advantages.
Muhammet Derviş Mete
wiley +1 more source
, 1995 土壤的加速侵蚀对农业发展和人类生存构成了严重威胁，变为当前全球性环境灾害之一，因此，对土壤侵蚀及其预防、控制途径的研究引起了人们的普遍关注。本文通过对国外文献的广泛调研 ...
王柏懿, 戚隆溪
core +2 more sources
Shuitu Baochi Xuebao, 2007 利用WEPP模型对川中丘陵区盐亭站5个径流小区土壤侵蚀量的预测和土壤侵蚀空间分布的模拟发现：WEPP模型对次降雨土壤侵蚀的预测，相对误差在30％以内的占总样本86％以上；对年降雨土壤侵蚀预测的误差较稳定，且相对误差均在15％以内。说明WEPP模型对长时间尺度的土壤侵蚀预测更准确。WEPP模型对土壤侵蚀空间分布的预测，通过坡面侵蚀曲线可以明显分出侵蚀发育区、加速侵蚀区和主要侵蚀区；降雨量和平均雨强越大，加速侵蚀区越短，侵蚀量越大；坡长越长，加速侵蚀区越长，侵蚀量越大，最大侵蚀量也越大。
严冬春 +3 more
doaj
Bipartisan Failures: How Political Agendas Undermine Core Ethical Principles in Emergency Management
Politics &Policy, Volume 53, Issue 6, December 2025.ABSTRACT This paper examines how political agendas across the ideological spectrum compromise ethical principles in emergency management in the United States. Through a literature review and comparative fact‐based scenario analysis, it demonstrates that both conservative and liberal governments have politicized disaster declarations, resource ...
Erik Xavier Wood
wiley +1 more source
Effects of Grass Cover on the Overland Soil Erosion Mechanism Under Simulated Rainfall
Water Resources Research, Volume 61, Issue 2, February 2025.Abstract Existing research on soil erosion primarily focuses on the individual effects of factors such as rainfall intensity, slope gradient, grass cover, and soil characteristics, with limited exploration of the interactions among these factors. This study investigated the mechanisms of soil erosion on overland covered with vegetation in the Loess ...
Mingwang Zhang +4 more
wiley +1 more source
Shuitu Baochi Xuebao, 2008 利用自行设计的双土槽径流小区系统和人工模拟降雨试验研究方法,研究了坡面侵蚀方式演变对坡面侵蚀产沙量的影响,分析了沟蚀发育不同阶段对坡面侵蚀产沙的贡献。结果表明,坡面侵蚀发育初期,沟头溯源侵蚀占主导地位,侵蚀产沙量呈增加趋势;坡面侵蚀发育中期,沟蚀的宽度和深度变化已属于切沟形态发育的范围,导致了侵蚀产沙量的急剧增加;坡面侵蚀发育后期,沟蚀发育过程处于后期稳定阶段,侵蚀产沙量变化伏动较小。在坡面侵蚀发育初期、中期和后期,沟蚀分别占坡面总侵蚀产沙量的28.7%,70.4%和37.1%。
肖培青 +3 more
doaj
Island restoration to rebuild seabird populations and amplify coral reef functioning
Conservation Biology, Volume 39, Issue 1, February 2025.Abstract Mobile organisms like seabirds can provide important nutrient flows between ecosystems, but this connectivity has been interrupted by the degradation of island ecosystems. Island restoration (via invasive species eradications and the restoration of native vegetation) can reestablish seabird populations and their nutrient transfers between ...
Ruth E. Dunn +5 more
wiley +1 more source
, 1990 本文用图示法表达了粒子云侵蚀/烧蚀问题中各环节之间的联系和各种耦合作用。然后简要地分析了几个主要环节:粒子在激波层中破碎、减速和汽化,高速运动的粒子撞击物面引起的侵蚀,侵蚀过程中多粒子的互相影响 ...
吴承康, 刘大有
core +2 more sources
Ecology and Evolution, Volume 14, Issue 12, December 2024.Greenhouse gas (GHG) emissions from soils play a significant role in contributing to global warming. Vegetation types especially affect soil GHG production. Our findings suggest that the restoration of natural grassland and artificial N‐fixing shrubland like Caragana korshinskii should be encouraged to alleviate GHG emissions, with the practical ...
Jihai Zhou +7 more
wiley +1 more source