Spatial Distribution Characteristics of Rocky Desertification in Karst Areas of Yunnan Province——Taking Jianshui County
The distribution of rocky desertification in Jianshui has been systematically studied,provi-ding valuable reference for the scientific management of rocky desertification and comprehensive management of vegetation restoration in Jianshui and even Yunnan province in the future.Based on the third monitoring data of rocky desertification in Jianshui county,the ARCGIS superposition ex-traction method is used to systematically analyze the distribution characteristics and laws of rocky de-sertification at different scales such as region,land type,altitude,slope,slope position,and slope aspect.The results show that the order of the occurrence area of rocky desertification in different land types in Jianshui county is arable land>tree forest>shrub forest>other forest land>other non for-est land>bamboo forest;The occurrence of rocky desertification in various townships is mainly con-centrated in four townships:Miandian town,Lin'an town Qinglong town and Panjiang township,ac-counting for 60.71%of the county's total;The area of rocky desertification in Jianshui shows a curve trend of first decreasing,then increasing,and finally decreasing with the increase of altitude and slope;The order of the occurrence degree and area of rocky desertification under different slope orientations and positions in Jianshui is as follows:no slope orientation>south>west>east>north,middle>upper>flat>lower>valley>ridge.
karst regionrocky desertificationspatial distributionlaw of change
国家科技期刊平台
NSTL
万方数据
