亚热带水土保持
亞熱帶水土保持
아열대수토보지
SUBTROPICAL SOIL AND WATER CONSERVATION
2014年
4期
13-17
,共5页
水土流失%坡耕地%防治%USLE
水土流失%坡耕地%防治%USLE
수토류실%파경지%방치%USLE
soil erosion%slope cropland%prevention and control%USLE
选取广东省泗纶小流域为研究区,以GIS技术为支撑,选用通用土壤流失方程( USLE )为数学模型,利用GIS技术的空间分析功能,计算降雨、植被、土壤、地形、土地利用等单因子并叠加分析,生成水土流失现状分布图。通过对区域内的土壤侵蚀强度进行分析、评价,得出影响流域水土流失的关键因子,并根据研究结果对流域内坡耕地水土流失提出相关防治措施,从而为广东省坡耕地区小流域水土流失治理提供理论支撑。
選取廣東省泗綸小流域為研究區,以GIS技術為支撐,選用通用土壤流失方程( USLE )為數學模型,利用GIS技術的空間分析功能,計算降雨、植被、土壤、地形、土地利用等單因子併疊加分析,生成水土流失現狀分佈圖。通過對區域內的土壤侵蝕彊度進行分析、評價,得齣影響流域水土流失的關鍵因子,併根據研究結果對流域內坡耕地水土流失提齣相關防治措施,從而為廣東省坡耕地區小流域水土流失治理提供理論支撐。
선취광동성사륜소류역위연구구,이GIS기술위지탱,선용통용토양류실방정( USLE )위수학모형,이용GIS기술적공간분석공능,계산강우、식피、토양、지형、토지이용등단인자병첩가분석,생성수토류실현상분포도。통과대구역내적토양침식강도진행분석、평개,득출영향류역수토류실적관건인자,병근거연구결과대류역내파경지수토류실제출상관방치조시,종이위광동성파경지구소류역수토류실치리제공이론지탱。
The Silun small watershed in Guangdong province was selected as the study area .Based on the spatial a-nalysis function of the GIS , the calculation and overlay analysis was conducted on the single factor of rainfall , vegeta-tion, soil, topography, land use and so on by using the Universal Soil Loss Equation ( USLE) as the mathematical models, so as to generate status maps of soil erosion .The analysis and evaluation was conducted on the soil erosion strength in the region and got the key factor of soil erosion in the watershed .In accordance with the research results, it was suggested the prevention and management measures on soil erosion of slope cropland areas within the watershed so as to provide the theory support for the soil erosion control at the small watershed in slope cropland areas of Guangdong Province .