Spatial Scale Consideration of Soil Erosion Monitoring Sites Arrangement

ZENG Hong-uan; YANG Sheng-tian; MA Li-gang; WANG Yu-juan

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Spatial Scale Consideration of Soil Erosion Monitoring Sites Arrangement

- Spatial Scale Consideration of Soil Erosion Monitoring Sites Arrangement
- Bulletin of Soiland Water Conservation Vol. 28, Issue 2, Pages: 24-27(2009)
- 作者机构：
  
  1. 北京师范大学地理学与遥感科学学院遥感科学国家重点实验室环境遥感与数字城市北京市重点实验室,北京,100875
  3. 湖北省水土保持监测中心,湖北,武汉,430071
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2009
- 稿件说明：
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ZENG Hong-uan, YANG Sheng-tian, MA Li-gang, et al. Spatial Scale Consideration of Soil Erosion Monitoring Sites Arrangement[J]. Bulletin of Soiland Water Conservation, 2009, 28(2): 24-27.
DOI：

ZENG Hong-uan, YANG Sheng-tian, MA Li-gang, et al. Spatial Scale Consideration of Soil Erosion Monitoring Sites Arrangement[J]. Bulletin of Soiland Water Conservation, 2009, 28(2): 24-27. DOI：

摘要

土壤侵蚀是-个多尺度的时空过程

不同尺度的土壤侵蚀具有不同的主制过程及主导因素

监测点的布局应考虑土壤侵蚀的空间尺度效应。提出三级控制的分层抽样监测点布局方案

即采用土壤侵蚀类型分区作为区域尺度上的-级控制因素;采用降雨量、沟壑密度、植被类型、土壤类型、土地利用结构作为小流域尺度上的二级控制因素

筛选典型小流域;采用坡度、植被盖度、土壤类型、土地利用作为坡面尺度上的三级控制因素

筛选典型坡面地块单元。逐层筛选监测点位置

在典型小流域出口处布设控制站

在典型坡面地块内布设径流小区。基于空间尺度效应的分层抽样监测点布局方法以GIS为主要技术手段

以RS为主要数据源

充分结合水土保持工作现状

能提高监测点布局的合理性和高效性。

Abstract

Soil erosion is a mufti-scale spatio-temporal process which has different control process and domination factors at different scale. Therefore

overall arrangement of soil erosion monitoring sites should take the spatial scale effect into consideration. We put forward a scheme for soil erosion monitoring points arrangement based on stratified sampling method with 3-levels control. The first control level took soil erosion type sub-region as control factor at regional scale; the second level took rainfall，gully density

vegetation type

soil type and land-use structure as control factors at smallwatershed scale

and filtrates typical small water- shed;the third level took slope gradient，vegetation fraction

soil type and land-use type as control factors at plot scale

and filtrates typical plot unit. Through this stratified selection of the monitoring location

the placement of control stations is arranged in the outlet of the typical small watershed and runoff plots in typical plot unit. The soil erosion monitoring point arrangement under the spatial scale effect based on stratified sampling method took GIS (geographical information system) as main technology and RS(remote sensing)as main data sources

integrated the current situation of soil and water conservation work

which can improve the rationality and efficiency of soil erosion monitoring points arrangement.

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