Results 11 to 20 of about 1,405 (91)

Policy integration of climate change adaptation in Central America: A review for development, land‐use planning, and risk management

open access: yesLatin American Policy, Volume 14, Issue 4, Page 534-567, December 2023., 2023
Abstract Central American countries have been described as highly exposed to the negative effects of climate change (CC). Policies dedicated to CC and climate policy integration—mainstreaming—into sectoral policies have been considered key strategies.
Luis Diego Segura Ramírez   +2 more
wiley   +1 more source

Ensuring sustainable water security through sustainable land management: Research evidences for policy

open access: yesWorld Water Policy, Volume 10, Issue 4, Page 1170-1186, November 2024.
Abstract Sustainable land management (SLM) practices is a key to reducing rates of land degradation and has proven to ensure water security by increasing soil moisture availability, decreasing surface runoff, decreasing soil erosion, increasing infiltration, and decreasing flood discharge. Land degradation is adversely affecting over 75% of the Earth's
Melku Dagnachew   +5 more
wiley   +1 more source

Ecological and socio‐political conflicts in the Turga Hydroelectric Project: An examination through the lens of political ecology

open access: yesWorld Water Policy, Volume 10, Issue 4, Page 1119-1161, November 2024.
Abstract The present paper critically examines water‐assisted developmental projects and their associated conflicts through the lens of political ecology, with a particular focus on hydroelectric power generation in the Global South. These projects often catalyze localized socio‐cultural, political, and ecological tensions, especially in indigenous ...
Surajit Kar   +2 more
wiley   +1 more source

南昆铁路威红区段段家河流域地貌演化与水土流失

open access: yesShuitu Baochi Xuebao, 1993
在对段家河流域多次实地考察的基础上,通过对该流域的地貌特征分析,认为目前段家河流域地貌演化正处于壮年期,是水土流失,滑坡,泥石流的发育和活动的旺盛期;该流域的水土流失比较严重,地表土层的平均侵蚀模数为2600t(km^2·a)。根据流域各段水土流失的程度不同,对流域水土流失进行了分区。然后,进一步探讨了水土流失与流域地貌演化的关系。
唐晓春 蒋忠信
doaj   +2 more sources

福建省长汀县不同土地利用方式下的坡地侵蚀特征

open access: yesShuitu Baochi Xuebao, 2020
根据福建省长汀县径流小区2014-2018年的实测资料,对不同土地利用方式下的坡地侵蚀特征进行研究,分析各径流小区土壤流失量、径流量与降雨、水土保持措施、植被等因子的关系。结果表明:不同土地利用方式、不同水土保持措施的径流小区土壤流失量、径流量特征不同;年降雨量对各径流小区的年土壤流失量影响不显著,不同水土保持措施对径流小区的年土壤流失量影响显著;年降雨量和不同水土保持措施对各径流小区的年径流量影响均为显著;年土壤流失量和年径流量与年降雨量的相关系数均与水土保持措施及径流小区植物的种类和生长有关 ...
汪水前
doaj  

长江流域水土流失及其对洪灾的影响

open access: yesShuitu Baochi Xuebao, 2001
人口的持续增长和区域开发规模的扩大,导致流域生态环境恶化,水土流失加剧.目前长江流域水土流失面积达56.2万km2,占流域总面积的31.2%,每年土壤侵蚀量达24亿t .严重的水土流失使土层减薄,水源涵养能力下降,土壤水库容减少,造成暴雨径流加速汇集;同时大量泥沙下泄,淤积江河湖库,降低调蓄和行洪能力,抬高洪水水位,加剧了洪灾的发展.综合分析了长江流域水土流失的历史变化和现状,探讨了水土流失对洪灾的影响, 在此基础上因地制宜的提出了水土流失的防治对策.
张生 朱诚
doaj  

Spatio-temporal dynamics of soil loss in Anji County, Zhejiang Province using exploratory spatial data analysis(基于探索性空间数据分析的安吉县水土流失时空变异规律研究)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2011
实时、准确地掌握区域水土流失时空变异规律是制定有效水土保持措施的关键.但目前水土流失时空规律分析鲜有兼顾定量数值特征与空间可视化特征.本研究利用探索性空间分析方法和遥感信息,在景观尺度上,对1994~2003年间浙江安吉县水土流失的时空动态格局进行分析.结果表明,10年间安吉县水土流失强度增加、影响范围扩大、水土流失高风险区面积增加.在500 m×500 m和1 000 m×1 000 m 2种格网尺度上,水土流失空间格局均表现出明显的空间集聚性,但以500 m×500 m尺度上的表现更为显著 ...
JIANGZhen-lan(江振蓝)   +4 more
doaj   +1 more source

水土流失系统物质与能量交换途径的研讨

open access: yesShuitu Baochi Xuebao, 1993
该文提出了水土流失系统物质和能量容量的概念,分析了它与水土流失的关系,结果表明水土流失系统物质与能量的过剩是引起水土流失的主要原因。同时还讨论了九雨的潜在势能、径流势能以及坡面系统物质所具有的势能的计算公式,提出了水土流失系统物质和能量交换的可能途径。
赵鸿雁 吴钦孝 等
doaj   +2 more sources

雅安地区水土流失危险度评价、分区和发展趋势分析

open access: yesShuitu Baochi Xuebao, 2002
综合水土流失现状和驱动力两个方面,建立了水土流失危险度综合评价模型,并利用此模型对雅安地区的水土流失危险度作了评价和分区。宝兴和荥经被划为轻度危险区,雅安、名山、芦山和天全被划为中度危险区,石棉和汉源被划为重度危险区。通过危险度指数和现状强度指数的比较,可看出雅安、名山、宝兴、芦山和天全的水土流失发展仍呈加剧的趋势,其中雅安和名山的水土流失发展形势尤其严峻,很可能由轻度水土流失区跃为中度水土流失区。
李辉霞
doaj   +2 more sources

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