滇中丘陵区水土流失动态监测和防治决策系统探索  

A Priliminary Study of Dynamic-system Establishment for Soil Erosion Monitor in Yunnan Mountains

作　　者：周跃[1] 杨永红[2] 汪竹青[2,3,4,5] 

机构地区：[1]昆明理工大学环境科学与工程学院,云南昆明650093 [2]云南师范大学,云南昆明650092 [3]定量遥感技术 [4]动态监测 [5]防治决策分析

出　　处：《昆明理工大学学报（理工版）》2002年第2期110-114,122,共6页Journal of Kunming University of Science and Technology(Natural Science Edition)

基　　金：云南省软科学基金(项目编号:200R19); 云南省中青年学术带头人后备人才基金.

摘　　要：采用基于３Ｓ技术的定量遥感方法，对１９９８和１９９９年金沙江一级支流龙川江上游小流域进行了水土流失动态监测和防治决策分析．结果表明，１９９９年为涝年，侵蚀总量高达８６９００８．９７ｔ，强度及其以上侵蚀级别的侵蚀量占总量的８６．３９％，　侵蚀模数平均为７７０３．８７　ｔ／ｋｍ２．１９９８年为旱年，流失情况较１９９９年的轻微．１９９９年中度及其以上侵蚀级别的侵蚀面积占流失总面积的３２．４１％，而１９９８年只占２６．０９％．１９９９年需要治理和急需治理的面积占侵蚀总面积的１５．４５％和０．８２％，而１９９８年的治理面积较低．本研究采用的技术在国内具有先进性和快速、准确、经济等优点，在云南山地有广阔的运用推广前景．in this project, a dynamic system for soil erosion monitor, based on 3S technology, was established. Using the system, we made a dynamic monitor of soil erosion in the area in 1998 and 1999 in the area concerned, and attempted a decision-making analysis of erosion prevention and treatment. The studying region is in the mini-drainage area of up-stream of the Longchuang River,which is the main tributary of the Yangtze River. As the monitor results show that it was a waterlogging year in 1999, when the gross of erosion in the region reached 869 008.97t: The total of erosion amount at intensity level and above, took up 86.39% of the gross; and the erosion module averaged 7 703.87 t/km2. It was a drought year in 1998, however, the degree of soil erosion was less serious than that in 1999. The total erosion area in 1999 at moderate level and above took up 32.41%, and in 1998 it only took up 26.09%. As the results of decision-making analysis indicate, the area requiring for soil erosion control was 354.45~317.77km2 respectively in 1999 and 1998. The area requring urgeut treatnent was 18.91~17.96km2 respectively in 1999 and 1998.

关 键 词：水土流失 定量遥感技术 动态监测 防治决策分析 云南 滇中丘陵区 防治决策系统 

分 类 号：S157[农业科学—土壤学]