1) soil erosion intensity index
水土流失综合指数
1.
The factors of slope,vegetation coverage and land use are selected as main ecological background factors and the soil erosion intensity index(SEI) is chosen as the integrative method.
基于ArcGIS空间分析平台和ERDAS空间建模平台,利用水土流失综合指数法,分别以坡度、植被覆盖度和土地利用类型为主要背景因子,分析了北京市妫水河流域水土流失的空间背景特征。
2) soil and water conservation
水土流失综合防治
1.
Policy changes and its evaluation of soil and water conservation in China;
我国水土流失综合防治的政策变迁与评价
3) soil erosion
水土流失
1.
Current status and comprehensive countermeasures of soil erosion for Karst rocky desertification areas in the Southwestern China;
西南岩溶石漠化区水土流失现状与综合防治对策
2.
The Study and Countermeas urs to the Effect of the Soil Erosion on the Ecological Environment around the Bailian River;
水土流失对白莲河库区生态环境的影响及对策
3.
The elementary study that tourist industry's development effect on soil erosion in Northwesten region of Yunnan Province;
旅游业开发对滇西北地区水土流失的影响初探——以香格里拉县三坝乡为例
4) soil and water loss
水土流失
1.
Forecast of soil and water loss in construction period of water power station;
水电站施工期水土流失预测
2.
The main control factors of desertification , soil and water loss in north of Shaanxi Province;
陕北地区土地沙化、水土流失的主控因素
3.
Application of Cs-137 to monitoring background value of soil and water loss in Zhejiang;
Cs-137在浙江省水土流失背景值监测中的应用
5) water and soil loss
水土流失
1.
The influence of water and soil loss in ecological environment and prevention;
水土流失对生态环境的影响及防治
2.
Forcast of water and soil loss by strip mining and control measures in Muli region Tianjun county Qinghai province;
木里露天煤矿水土流失量预测及防治对策
3.
Analysis of affection of water and soil loss on river s flood conveying ability in Weihe river basin in Shaanxi Province;
水土流失对渭河行洪能力影响浅析
6) soil and water erosion
水土流失
1.
Measure for causation of soil and water erosion in Yanshou County;
延寿县水土流失成因及治理措施
2.
Present situation of the soil and water erosion and the prevention counter measures in Guyuan of Ningxia;
宁南山区人为水土流失现状及其防治对策研究
3.
Effects of biological coverage on controlling soil and water erosion in slope orchard land in Baise;
百色坡地果园水土流失的生物覆盖治理研究
补充资料：水土流失
| 水土流失 soil erosion 土壤在水的浸润和冲击作用下，结构发生破碎和松散，随水流动而散失的现象。水土流失按时期可分为人类出现以前的水土流失和人类时期的水土流失。后者是在前者形成的侵蚀地貌基础上，在人类活动下发生演变而成的。水土流失按动力又可分为雨失、径流冲失和重力流失。①雨失。雨滴冲击地面，使土壤破碎、分离、飞溅而流失。②径流冲失。降雨或融雪产生的径流对土壤的破坏和引起的流失。③重力流失。在水参与下，土壤由于重力作用而发生陷落、地滑、滑塌等现象。
水土流失的形态通常分为面失、沟失、塌失和泥石流4类。①面失。指分散的地表径流引起土壤发生的面状流失。②沟失。集中的水流破坏土壤、切入地面形成冲沟的流失。③塌失。在各种水土流失的作用下，由于重力而引发的土壤塌落、滑塌、泻溜或甚至堕石、山崩等。④泥石流。水土流失发展严重地区，大量固体物质在重力和水流冲力的综合作用下形成的洪流。水土流失的程度受地形、坡度、坡长、坡形、坡向的影响。气象诸因素、土壤性状等也是重要的影响因素。但在人类活动下，尤其是不合理的垦殖和森林破坏是引起水土流失的更为重要的因素。水土流失造成土壤肥力降低，水、旱灾害频繁发生，河道淤塞，地下水位下降，农田、道路和建筑物被破坏，环境质量变劣和生态平衡遭到破坏。 |
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条