Results 1 to 10 of about 1,561 (90)

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

长江上游环境演化与水土流失分期

open access: yesShuitu Baochi Xuebao, 2002
根据长江上游社会经济、自然环境和水土流失的演化过程,将长江上游近5000年划分为5个水土流失期:1.无明显水土流失期(公元前316年以前);2.水土流失渐增期(公元前316~1644年);3.水土流失期明显增长期(1645~1949年);4.水土流失猛增期(1950~1988年);5.水土流失局部控制期(1989~2010年)。
柴宗新 范建容
doaj   +2 more sources

辽宁东部山区的人为水土流失分析

open access: yesShuitu Baochi Xuebao, 1995
通过调查分析阐述了辽宁东部山区4种人为生产活动与水土流失的关系;即坡地种植与土壤流失;陡坡开垦与土壤流失;过度放蚕与水土流;陡坡栽参与水土流失。并指出了谝我防治水土流失的途径。
黄毅 党福江
doaj   +2 more sources

西部开发工程中的水土流失与环境

open access: yesShuitu Baochi Xuebao, 2003
水土流失是破坏自然环境最严重和最突出的问题,我国是水土流失非常严重的国家,几乎遍 及所有的省、自治区、直辖市,共有水土流失面积492万km2,占国土面积的51.2%.严重 的水土流失不仅对自然环境造成破坏,也严重制约国民经济的发展.水利水电工程、矿产资 源开发、公路铁路建设、城镇开发建设等西部开发工程中,都将遇到水土流失与环境问题, 本文阐述了西部地区水土流失与环境的现状,分析了工程建设对水土流失与环境的影响,提出西部开发工程中防治水土流失的措施.
党进谦, 阎宁霞, 李靖
doaj   +2 more sources

天然气管道建设中的土壤流失与防治 —— 以涩北-西宁-兰州输气管道工程为例

open access: yesShuitu Baochi Xuebao, 2002
天然气管道建设工程是一种线型工程,线路长,沿道水土流失类型复杂,施工区段多,不同地段采取的工艺不同,对水土流失影响也不同,采取的方法措施也不同.以"九五"国家重点开发建设项目涩北-西宁-兰州输气管道工程(在建项目)水土保持为例分析得出石油天然气管道开发建设项目施工期的水土流失量占总水土流失量的69%,是开展开发建设项目水土保持的关键时期;施工单位必须采取有效的临时防治水土流失措施;主体工程之外的辅助工程和临时工程的水土流失不容忽视,伴行公路的水土流失量占总水土流失量的79 ...
郭锐 张绒君 党生 张丽娟
doaj   +2 more sources

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

三峡库区水土流失综合治理优先小流域识别方法

open access: yesShuitu Baochi Xuebao, 2020
三峡库区水土流失严重,开展水土流失综合治理是减少入库泥沙和提高三峡工程综合效益的关键,而如何高效识别优先小流域,则是提高治理资金效益和科学决策的基础。以重庆市合川区为例,在区域土壤侵蚀评价的基础上,提出了水土流失面积法、土地利用-水土流失面积法和坡度-水土流失面积法3种优先小流域识别方法,并对其进行了比较分析。结果表明,坡度-水土流失面积法识别的优先小流域水土流失面积占比接近于水土流失面积法,同时又将坡度较大以及耕地、园地和采矿用地面积占比较大的小流域识别出来,纳入优先小流域中 ...
符素华   +5 more
doaj  

Research of dynamic monitoring system for soil erosion by satellite remote sensing and GIS technique(基于卫星遥感和GIS技术的水土流失动态监测体系研究)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2001
综合考虑影响水土流失的降雨量、土壤可蚀性、坡度、植被覆盖率、土壤流失容许量和保护因子等,笔者提出建立基于GIS和遥感技术的水土流失反演分析模型,实现水土流失的动态和快速监测预报.技术要点如下:1)遥感技术能实现高精度的植被覆盖率和土地利用现状制图,可满足中长期水土流失变化监测预报的数据要求.2)利用气象卫星数据可实现对雨量的短期预报监测,进而实现水土流失的短期快速预报和监测.3)在GIS支持下,利用土壤背景和数字地形模型可实现水土流失潜在可能性分析.4 ...
ZHANGDeng-rong(张登荣)   +2 more
doaj   +1 more source

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