Land Degradation Danger Degree and Its Spatial Heterogeneity in Fujian Province
【摘要】 综述了福建主要土地退化——耕地损毁、土壤污染化、土壤侵蚀化和土壤贫瘠化的空间分布格局和空间相关性 ,提出了土地退化危险度的概念 ,分析了影响福建主要土地退化危险度的社会经济因素 ,并选定了 6个重要社会经济指标 ,运用 GIS技术 ,在一定的数学模型支持下 ,考虑主要土地退化类型 ,提出了福建土地退化危险度分区 ,并探讨了各分区的特点
【Abstract】 The land degradation has been attracted more and more attention in China. It is becoming a challenge for scientists to find effective measures to control the land degradation. In this paper, taking Fujain province as a case study, we reviewed the spatial pattern and correlation of major land degradation: damage of cultivated land, soil pollution, soil erosion, and soil leanness. The concept of land degradation danger degree was proposed, and the social and economic factors, which influence the land degradation danger degree in Fujian, were analyzed, 6 important social and economic index were selected. Supported by certain mathematical models, combining with the main types of land degradation, a regional classification of land degradation danger degree in Fujian were developed based on the technology of geographic information system(GIS),and the characteristics of each sub-region of land degradation danger degree was described.
【Key words】 land degradation danger degree； damage of cultivated land； soil pollution； soil erosion； soil leanness； Fujian；