Occurrence mechanism and prediction of rocky land degradation in karst mountainous basins with the aid of GIS technology, a study case in Houzhai River Basin in southwestern China | |
Xianfei Huang; Yunchao Zhou; Shijie Wang; Zhenming Zhang | |
2019 | |
Source Publication | Environmental Earth Sciences
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Volume | 78Issue:6Pages:1-13 |
Abstract | Rocky desertification is a severe ecological issue threatening and constraining regional sustainable development in karst mountainous areas like Houzhai River Basin in southwestern China. The results indicate that slope gradient and altitude are closely associated with occurrence of rocky desertification in the study region and there are some significant correlations between rock outcrop and slope gradient (r=0.363, p<0.001) and between rock outcrop and altitude (r=0.0.336, p<0.001). Slope gradient and altitude are key factors contributing to rocky desertification in the studied basin. Therefore, special attention should be paid to sloping lands that have greater slope gradients or altitudes to prevent and control the rocky desertification in a karst mountainous basin as the Houzhai River Basin. Furthermore, it might be possible to predict the occurrence of rocky desertification using neural networks on the basis of geographical characteristics and human disturbance. The correlation coefficients between observed values and predicted values ranged from 0.728 to 0.905, with a mean value of 0.851 (ten times repeats). The present study also indicates that human disturbance has little effect on rocky desertification. However, further studies should be conducted to interpret the effects of agricultural activities on the occurrence of rocky desertification. |
Keyword | Rocky Desertification rock Outcrops slope Gradient karst Basin land Use landform |
Indexed By | SCI |
Language | 英语 |
Document Type | 期刊论文 |
Identifier | http://ir.gyig.ac.cn/handle/42920512-1/10899 |
Collection | 环境地球化学国家重点实验室 |
Affiliation | 1.Institute for Forest Resources and Environment of Guizhou, College of Forestry, Guizhou University, Guiyang 550025, People’s Republic of China 2.Guizhou Provincial Key Laboratory for Environment, Guizhou Normal University, Guiyang 550001, People’s Republic of China 3.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Science, Guiyang 550002, People’s Republic of China |
Recommended Citation GB/T 7714 | Xianfei Huang;Yunchao Zhou;Shijie Wang;Zhenming Zhang. Occurrence mechanism and prediction of rocky land degradation in karst mountainous basins with the aid of GIS technology, a study case in Houzhai River Basin in southwestern China[J]. Environmental Earth Sciences,2019,78(6):1-13. |
APA | Xianfei Huang;Yunchao Zhou;Shijie Wang;Zhenming Zhang.(2019).Occurrence mechanism and prediction of rocky land degradation in karst mountainous basins with the aid of GIS technology, a study case in Houzhai River Basin in southwestern China.Environmental Earth Sciences,78(6),1-13. |
MLA | Xianfei Huang;Yunchao Zhou;Shijie Wang;Zhenming Zhang."Occurrence mechanism and prediction of rocky land degradation in karst mountainous basins with the aid of GIS technology, a study case in Houzhai River Basin in southwestern China".Environmental Earth Sciences 78.6(2019):1-13. |
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