摘要
以数字高程模型(DEM)、日降雨量、土地利用数据、遥感影像为基础数据,运用地理信息系统(GIS)与遥感(RS)技术,结合修正后的通用土壤流失方程(RUSLE)模型与景观格局的分析手段,研究铜仁地区1987—2015年的土壤侵蚀时空分异特征。结果表明:研究区在1987—1995年土壤侵蚀比较严重,而1995—2015年土壤侵蚀情况得到明显改善,此期间大部分区域以及岩溶槽谷区的土壤侵蚀强度向低一级转移,其中剧烈和极强等级侵蚀向中度和轻度等级侵蚀转出较多;从景观格局的角度来看,土壤侵蚀状况越来越受微度侵蚀和轻度侵蚀优势景观类型所支配。
Based on digital elevation model(DEM), daily rainfall, land use date and remote sensing imagery as basic data, combined with GIS, RS techniques and landscape pattern analysis tool, the modified revised universal soil loss equation (RUSLE) was used to analyze temporal and spatial distribution characteristics of soil erosion in Tongren Area from 1987 to 2015. The results show that the soil erosion in the study area was relatively serious from 1987 to 1995. However, From 1995 to 2015, the soil erosion was significantly improved. During this period, the soil erosion intensity in most areas and karst trough areas shifted to a lower level. Among them, the violent and extremely strong grade erosions were mostly transferred to the moderate and mild grades. From the perspective of landscape pattern, the soil erosion status was increasingly dominated by the slightly erosion and mild erosion landscape types.
作者
胡先培
曾成
钱庆欢
王权
李阳兵
HU Xian-pei;ZENG Cheng;QIAN Qing-huan;WANG Quan;LI Yang-bing(School of Geography and Environmental Science, Guizhou Normal University, Guiyang 550025, China)
出处
《生态与农村环境学报》
CAS
CSCD
北大核心
2019年第2期158-166,共9页
Journal of Ecology and Rural Environment
基金
国家重点研发计划(2016YFC0502300)
作者简介
胡先培(1993—),男,贵州盘州人,硕士生,研究方向为水土保持与生态恢复。E-mail:823034997@qq.com;通信作者:李阳兵,E-mai:li-yapin@sohu.com.
