基于灰色模糊综合评价模型的土地生态安全评价——以海南西部为例

Application of gray fuzzy evaluation model to comprehensively assess land ecological security:A case study on the western part in Hainan province

以海南西部为例,利用灰色模糊综合评价模型对儋州、白沙、昌江、东方等4市(县)的土地生态安全进行分析和评价。结果显示,4市(县)模糊合成均值仅为0.5573分,表明琼西地区4市(县)土地资源可持续发展水平较差,生态安全受到威胁,其中白沙和儋州土地资源可持续发展水平相对较好,处于生态准安全区,而昌江和东方处于生态危险区。该区域应采取相应措施提高土地资源利用水平,促进生态环境良性循环,确保土地利用、社会效益、经济效益和生态效益平衡发展。

Gray fuzzy evaluation model was used to comprehensively analyze and assess land ecological security of the four cities/counties, viz. Danzhou, Baisha, Changjiang and Dongfang in western Hainan. The results showed that the average score of fuzzy synthetic results of the four cities/counties was only 0.5573. It indicated that the general sustainable development level of land resources in the four cities/counties was lower, and their ecological security was appeared to be threatened. Among the four cities/counties, the sustainable development levels of land resources in Baisha and Danzhou were higher, which belonged to ecological quasi-safe area. However, Changjiang and Dongfang were in the ecologically risky areas. Therefore, several measures should be taken to improve utilization of land resources, promote ecological environment to be a virtuous cycle and realize the harmonious development between land utilization, society, economy and ecology.