Potential rocky desertification simulation for the karst plateau area using CA-Markov model : a case study of middle and lower reaches of Houzhai Stream, China :a case study of middle and lower reaches of Houzhai Stream, China

Panpan Zhang; Yuanman Hu; Duning Xiao; Xiuzhen Li; Jie Yin

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자료유형: 학술대회자료

저자정보: Panpan Zhang (Chinese Academy of Sciences) Yuanman Hu (Chinese Academy of Sciences) Duning Xiao (Chinese Academy of Sciences) Xiuzhen Li (Chinese Academy of Sciences) Jie Yin (Chinese Academy of Sciences)

저널정보: 인하대학교 정석물류통상연구원 인하대학교 정석물류통상연구원 학술대회 Proceedings of the 3rd International conference on risk management &Global e-business(volume 2)

발행연도: 2009.10

수록면: 1,214 - 1,220 (7page)

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연구주제

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연구배경

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It has been recognized that karst rocky desertification is one of the most serious geo-ecological problem in Southwestern China. Understanding the development trend of karst rocky desertification is of fundamental importance in rocky desertification management and control. More attention should be paid to karst areas with potential rocky desertification. In this paper, ARFGIS software was used to discribe the historical and current situation of potential rocky desertification spatial pattern in the middle and lower reaches of houzhai stream, a typical karst plateau area. Remote sensing images from the study area, Remote sensing images from the study area, collected in 1987,1955 and 2004 were used for spatial pattern simulation of potential rocky desertification subdivided into six types: none, extreme slightly, slightly, moderately, severely and extreme severely. The result showed that the potential rocky desertification landscape distributed unevenly; a little more than half of the are showed gradual rocky desertification trend and about 60% of those regions had emarkable rocky desertification trend; Slightly potential rocky desertification was increasing all the time, while the other five types of potential rocky desertification had different change tendencies during different states. Then based on CA-Markov model, the potential rocky desertification spatial pattern was predicted. Verification with investigation based on map in 2004 indicated that 87.2% of the simulation was consistant with real data. therefore the model is robust in prediction potential rocky desertification spatial pattern in this study area.

#Karst plateau #Potential rocky #desertification #CA-Markov model #Houzhai stream

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