[1]高峰,华璀,卢远,等.基于GIS和USLE的钦江流域土壤侵蚀评估[J].水土保持研究,2014,21(01):18-22,28.
　GAO Feng,HUA Cui,LU Yuan,et al.Assessment of Soil Erosion in Qinjiang Watershed Based on GIS and USLE[J].Research of Soil and Water Conservation,2014,21(01):18-22,28.
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基于GIS和USLE的钦江流域土壤侵蚀评估

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 21 期数: 2014年01期 页码: 18-22,28 栏目: 出版日期: 2014-02-28
Title:
Assessment of Soil Erosion in Qinjiang Watershed Based on GIS and USLE
作者:
高峰1, 华璀1, 卢远1, 陶艳成2,3
1. 广西师范学院 资源与环境科学学院, 南宁 530001;
2. 广西科学院 广西红树林研究中心, 广西 北海 536000;
3. 广西红树林保护与利用重点实验室, 广西 北海 536000
Author(s):
GAO Feng1, HUA Cui1, LU Yuan1, TAO Yan-cheng2,3
1. College of Resources and Environmental Sciences, Guangxi Teachers Education University, Nanning 530001, China;;
2. Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai, Guangxi 536000, China;
3. Guangxi Key Laboratory of Mangrove Conservation and Utilization, Beihai, Guangxi 536000, China
关键词:
土壤侵蚀强度; GIS; RS; USLE; 钦江流域
Keywords:
soil erosion intensity; GIS; RS; USLE; Qinjiang watershed
分类号:
S157.1
摘要:
在GIS和RS技术支持下，基于USLE模型对钦江流域土壤侵蚀进行了定量评估，并分析了不同海拔、不同坡度、不同土地利用类型下土壤侵蚀强度特征和规律。结果表明：（1） 钦江流域年均土壤侵蚀模数为2 608.87 t/（km2 ·a），属中度侵蚀，远大于水利部规定的南方红壤丘陵区土壤允许流失量500 t/（km2·a）的标准；（2） 随高程升高，土壤侵蚀强度呈递减趋势。0～240 m高程带是土壤侵蚀防治的重点区域。（3） 随坡度增大，土壤侵蚀强度呈递减趋势。15°以下坡度带是钦江流域土壤侵蚀重点预防和治理区域。（4） 不同土地利用类型的土壤侵蚀强度差异显著，旱地、草地和未利用地大部分处于强度侵蚀以上，是控制流域整体土壤侵蚀状况的关键土地利用类型。
Abstract:
Soil erosion intensity of Qinjiang watershed was evaluated based on USLE model by applying GIS and RS technology, and analyzing characteristics and disciplines of different elevation, slope and land use types. The results show that: (1) the average soil erosion rate in the whole year was 2 608.87 t/(km2·a), belonging to the moderate erosion, but this level was larger than the soil loss tolerance of 500 t/(km2·a) in north red soil region ruled by the Ministry of Water Resources; (2) based on different altitude gradient in the research area, soil erosion intensity was in reverse proportion to the increase of the elevation gradient, so, the 0～240 m elevations was the key area of soil erosion prevention; (3) based on different slope gradient in the study area, soil erosion intensity was in reverse proportion to the increase of the slope gradient, the slope less than 15° was the key area of soil erosion prevention and management；(4) soil erosion intensity differences under different land use types in study area were significant. Dry farmland, grassland and unused land mainly distributed in the serious erosion area, which was the key land use type to control the whole soil erosion intensity in watershed.

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备注/Memo

收稿日期:2013-05-31;改回日期:2013-07-09。
基金项目:广西北部湾经济区城市化与生态环境交互耦合机制研究（210167）；广西教育厅项目（201106LX297）
作者简介:高峰(1987-),男,山西人,硕士研究生,主要从事遥感和GIS应用、区域土壤侵蚀定量评价与监测系统研究。E-mail:belong0204@163.com
通讯作者:华璀(1962-),女,副教授,硕士生导师,主要从事资源环境遥感、土地资源管理与规划研究。E-mail:huacui163@163.com

更新日期/Last Update: 1900-01-01