运城市土地资源承载力动态评价

Dynamic evaluation of land carrying capacity of Yuncheng City,Shanxi Province

以山西省运城市为研究对象,从耕地承载力、经济人口承载力、土地生态承载力3个方面选取18个评价指标,构建了土地资源承载力评价指标体系,利用均方差法明确了各评价指标的权重,对运城市1995、2000、2005、2010、2012、2014、2016年7个时段的土地资源承载力进行了综合评价.结果表明:运城市土地资源承载力经历了下降、回升两个阶段;土地资源承载力等级处于Ⅳ~Ⅴ级;2005年是运城市土地资源承载力变化的转折点.最后分析了运城市土地资源承载力的影响因素,并提出了相应的土地资源承载力提升建设对策.

Yuncheng city,Shanxi Province was taken as the research object,based on three aspects of the carrying capacity of cultivated land,the economic population carrying capacity and the ecological carrying capacity of land.The evaluation index system of land resources carrying capacity with 18 evaluation indexes was constructed.At the same time,by using the method of mean square deviation,the weight of the evaluation index was defined,and the comprehensive evaluation of the land resources carrying capacity in the seven periods of 1995,2000,2005,2010,2012,2014,2016 in Yuncheng city was carried out.The results showed that the carrying capacity of land resources in Yuncheng city had experienced two stages of decline and recovery,the carrying capacity of land resources was in the fourth to fifth grade.The land resources carrying capacity turned in 2005.Finally,the influencing factors of land resources carrying capacity in Yuncheng city were analyzed,and the corresponding countermeasures to enhance the carrying capacity of land resources were put forward.