基于RUSLE模型的铜仁地区1987-2015年土壤侵蚀时空特征

doi:10.19741/j.issn.1673-4831.2018.0439

摘要/Abstract

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。

关键词: 土壤侵蚀, 岩溶槽谷, RUSLE模型, 景观格局, 铜仁地区

Abstract:

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.

Key words: soil erosion, karst valley, RUSLE, landscape pattern, Tongren Area

中图分类号:

X825

胡先培, 曾成, 钱庆欢, 王权, 李阳兵. 基于RUSLE模型的铜仁地区1987-2015年土壤侵蚀时空特征[J]. 生态与农村环境学报, 2019, 35(2): 158-166.

HU Xian-pei, ZENG Cheng, QIAN Qing-huan, WANG Quan, LI Yang-bing. Using RUSLE Model to Analyze Temporal and Spatial Characteristics of Soil Erosion in Tongren Area From 1987 to 2015[J]. Journal of Ecology and Rural Environment, 2019, 35(2): 158-166.

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