地理科学进展 ›› 2008, Vol. 27 ›› Issue (2): 47-52.doi: 10.11820/dlkxjz.2008.02.007

• 遥感与模式应用 • 上一篇    下一篇

多尺度土壤侵蚀评价指数的技术与方法

赵文武1,2, 傅伯杰3, 郭旭东1   

  1. 1. 国土资源部土地利用重点实验室, 北京100035;
    2. 北京师范大学资源学院, 北京100875;
    3. 中国科学院生态环境研究中心城市与区域生态国家重点实验室,北京100085
  • 收稿日期:2007-12-01 修回日期:2008-01-01 出版日期:2008-03-25 发布日期:2008-03-25
  • 作者简介:赵文武(1976-)| 男, 博士, 讲师, 主要从事土地利用与生态过程、GIS 应用等方面的研究.Email: zhaoww@bnu.edu.cn
  • 基金资助:

    国土资源部土地利用重点实验室开放基金项目(07- 05) 和国家自然科学基金项目(40501002) .

The Methods and GIS Techniques for Calculating Multiscale Soil Loss Evaluation Index

ZHAO Wenwu1,2, FU Bojie3, GUO Xudong1   

  1. 1. Key Laboratory of Land Use, Ministry of Land and Resources, Beijing 100035, China;
    2. College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China;
    3. State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco- Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
  • Received:2007-12-01 Revised:2008-01-01 Online:2008-03-25 Published:2008-03-25

摘要:

针对不同尺度开展土地利用与土壤侵蚀的综合研究是自然地理学研究的前沿领域和热点问题。多尺度土 壤侵蚀评价指数作为新近提出的土壤侵蚀模型, 在跨尺度土地利用与土壤侵蚀的研究中具有良好应用前景。本文 基于多尺度土壤侵蚀评价指数计算公式及其因子内涵, 应用尺度转换的思想, 阐述了降雨侵蚀力、土壤可蚀性、作 物覆盖与管理因子、地形因子等不同评价因子在坡面、小流域、流域不同尺度上的计算方法与GIS 实现技术, 以期 服务于多尺度土地利用与土壤侵蚀研究的深入和多尺度土壤侵蚀评价指数的发展。

关键词: GIS, 尺度转换, 土地利用, 土壤侵蚀, 土壤侵蚀评价指数

Abstract:

Exploring the relationships between land use and soil erosion at different scales is a frontier research field and a hot spot topic in contemporary physical geography. As a new soil erosion model, the multiscale soil loss evaluation index (SL) has good prospects for analyzing the relationships between land use and soil erosion at multiple scales. Based on the SL equations and SL- factor meanings at different scales, this paper explains the detailed methods and GIS techniques for SL and SL- factor calculation at slope scale, small watershed scale and watershed scale. The SL- factor include rainfall erosivity factor, soil erodibility factor, topographic factor and cover/ management factor. And the GIS techniques include kriging interception, field calculation, raster calculation, expanding zones, and so on. It is expected that the methods and GIS techniques of SL calculation will be helpful for SL development and the profound research of land use and soil erosion at multiple scales.

Key words: GIS, land use, scaling, soil erosion, soil loss evaluation index