水土流失

GIS在水土流失监测预报中的应用

Application of GIS in monitoring forecast of soil and water loss

基于GIS的鞍山市水土流失敏感性评价

Sensitivity assessment of soil and water loss in Anshan based on GIS

土壤保持旨在控制水土流失。

Soil conservation is intended to curb erosion .

农作物轮作有助于防止水土流失。

Crop rotation helps prevent soil erosion .

开展国土绿化行动，推进荒漠化、石漠化、水土流失综合治理，强化湿地保护和恢复，加强地质灾害防治。

We will promote afforestation , take comprehensive steps to control desertification , stony deserts , and soil erosion , strengthen wetland conservation and restoration , and better prevent and control geological disasters .

第三十八条国家鼓励单位和个人按照土地利用总体规划，在保护和改善生态环境、防止水土流失和土地荒漠化的前提下，开发未利用的土地；

Article 38 The State encourages development of unused land by units or individuals according to the general plans for the utilization of land and under the precondition of protecting and improving the ecological environment , preventing water loss , soil erosion and desertification .

侵蚀产沙模型及GIS技术在水土流失监测中的应用

The Application of Soil Erosion Models and GIS in Soil Erosion Monitoring

基于GIS的区域水土流失模型初步研究

Preliminary Research on the Patterns of Regional Soil Erosion in View of GIS

应用BP人工神经网络技术划分水土流失等级

Dividing of Soil and Water Loss Grade with BP Artificial Neural Network

基于GIS的小流域水土流失遥感定量监测研究

Study on Quantitative Monitoring Soil Loss in Small Watershed Base on GIS and RS

基于GIS的天津市水土流失监测信息系统建设

Construction of Monitoring System for Loss of Soil and Water in Tianjin Based on GIS Technique

基于DEM的1：50000区域尺度水土流失地形因子研究

A Research on 1:50000 Regional Soil and Water Loss Topographic Factors Based on DEM

该文在GIS技术支持下分析了宜宾市水土流失与土地利用间的相互关系，以期为宜宾市土地利用空间重组提供战略思路。

In order to enlighten land re-distribution in Yibin City , between land use and soil and water loss in Yibin City were explored with the support of GIS technology .

在此基础上，采用GM（1，1）灰色动态模型预测西川河流域降雨入渗量随水土流失治理度的变化趋势。

A gray dynamic model is put forward to the infiltration quantity tendency in the Xichuan catchment was predicted by a gray dynamic model , GM ( 1,1 ) .

本文首先分析了应用TM热红外图象和相关的比值处理来监测水土流失的可行性。

First of all the capability of applying TM thermal infrared image and relative ratio processing to monitoring soil and water loss was discussed in this paper .

分别利用面蚀分级指标和USLE模型支持下的水土流失遥感监测两种方案对长汀县水土流失进行监测和评估。

Soil erosion monitoring based on Standard of Surface Erosion and USLE are applied to research area .

本论文即对目前广泛应用于湖北省高速公路边坡水土流失量预测的美国通用土壤流失方程中的主要因子之一，土壤可蚀性因子K的计算模型进行修正。

This thesis is to modify the calculating model of soil erodibility ( K factor ), one of the most important factors of universal soil loss equation , which is widely used in the prediction of soil loss amount of highway slope in Hubei Province .

以TM影像为信息源分析植被覆盖度，以数字等高线数据为基础提取坡度，结合气象、土壤等历史资料，经GIS的空间分析，得出水土流失的调查结果。

Using TM imagery as remote sensing information source to analyze the coverage of vegetation and employing digital contour as data information source to extract the slope in combination with atmosphere and soil data , one can accomplish the investigation of soil erosion through GIS spatial analysis .

与1960s系统氮平衡比较，可以看到林地在减少水土流失、促进养分的合理循环方面发挥了重要作用，应受到充分的重视。

Comparing nowadays ' nitrogen balance with that of 1960s , it is clear that much more attention should be paid to the forest because it plays a great pole in reducing soil and water loss and changing the nitrogen cycling way in ecosystem .

GPS控制网应用于山区水土流失监控测量，必须将WGS-84坐标系转换为实用的国家或地方坐标系，并注意基准点的选择与检验。

The GPS control net is applied for monitoring and measuring the soil and water loss of mountainous regions . It must turn WGS-84 coordinate series into practical state or local coordinate series . In the meanwhile , it should select and examine datum points .

为削减缓坡梯土幼林地的水土流失，设立1000m2迳流小区，进行定位观测。

In order to control the soil erosion on the young forested land of slow-up hill , 1000m 2 runoff plot was set up as a local investigation station .

通过对浙江省近20a的水土流失和社会经济变化情况的分析，找出了两者之间的发展规律和两者之间相互关联、相互影响、相互制约的关系。

Through the analysis of soil and water loss as well as social and economic changes for about 20 years in Zhejiang Province , their development law and the relation of their relevance , influence and constraint have been founded out .

花岗岩山地丘陵，是我国南方水土流失严重地区，年侵蚀模数可达8000～15000t/km~2。花岗岩风化壳极为发育，厚度可达60m以上，为严重的土壤侵蚀提供了丰富的固体物质。

The granite hilly area in South China is a region of severe soil erosion with annual erosion rate of 8000-15000 t / km2 . Thickness of the very developed weathered shell reaches more than 60m , which provides a plenty of erosible solid materials .

破坏森林和自然植被导致水土流失。

Destrucion of forests and natural vegetation leads to soil erosion .

黄土高原水土流失区制约粮食生产的干旱原因分析

Analyses on the causes restricting grain production in the Loess Plateau

水土流失对生态环境的影响及对策

Effects of Soil and Water Loss on Eco-Environment and Its Countermeasures

德庆县水土流失综合治理措施与效益

The integrated soil erosion management and its benefit in Deqing County

植被防止水土流失的研究

Study on the role of vegetative cover in preventing soil erosion

降雨及土壤湿度对水土流失的影响

Influence of rainfall and soil wetness on water and soil losses

水土流失经济损失计量研究评述

Review on the Researches of Soil and Water Losses Economic Estimation