水土保持研究2017，Vol.24Issue(4)：127-132,6.
基于3S技术的地形起伏度与区域土壤侵蚀的相关性研究
Research for the Correlation Between Relief Amplitude and Regional Soil Erosion Based on 3S Technology
摘要
Abstract
Relief amplitude directly affects the runoff variation of the earth surface,thus,it is one of the main causes of soil erosion.The premise of analysis the relativity between relief amplitude and soil erosion is to determine the best analysis window under the scale data to extract the relief amplitude.In this paper,we analyzed the best analysis window which resulted from DEM (30 × 30 resolution)of Luodian County in Guizhou Province through a method of mean change-point under the support of 3S technology.And according to the modified classification criteria of soil erosion in 2007,we estimated the soil erosion amount of each sample unit in study area.Finally,we analyzed the relativity between relief amplitude and regional soil erosion.The results show that the best analysis window under the scale data in Luodian County is 32 × 32,and the best statistical area is 0.921 6 km2,which effectively proves that using the mean change point analysis method for extracting the relief amplitude was feasible.Furthermore,the obtained correlation coefficient between relief amplitude and regional soil erosion modulus in Luodian County is 0.5 191,fully illustrating that relief amplitude as one of macroscopic topographic factors is one of the dominant factors in regional soil erosion.关键词
地形起伏度/土壤侵蚀/均值变点法/3S技术Key words
relief amplitude/soil erosion/mean change-point analysis/3S technology分类
农业科技引用本文复制引用
舒天竹,王晓红..基于3S技术的地形起伏度与区域土壤侵蚀的相关性研究[J].水土保持研究,2017,24(4):127-132,6.基金项目
贵州省科学技术资助项目(黔科合J字[2014]2070号) （黔科合J字[2014]2070号）
贵州大学引进人才科研资助项目(贵大人基合字([2013]31号) （贵大人基合字([2013]31号）
贵州省科技计划课题资助(黔科合LH字[2014]7649号) （黔科合LH字[2014]7649号）
