浙江省耕地利用集约度时空变化及其影响因素

以浙江省为例,利用2002-2011年浙江省及2012年各市土地利用变更数据和社会经济发展数据,从耕地投入强度、耕地产出、耕地利用程度及耕地可持续状况4个角度出发,选取12项评价因子构成耕地利用集约度评价体系,运用功效系数法对浙江省耕地利用集约状况从横向和纵向两个方面进行了综合评价,并对浙江省耕地集约利用影响因素进行了研究。结果表明,浙江省耕地利用集约度水平时序变化明显,近10 a来呈现波动性增长;耕地利用集约度区域差异性明显,呈现北高南低的态势;其中社会经济发展水平、农业发展水平及政策性因素是引起耕地利用集约度变化的主要因素。

Spatial-temporal Variance and Its Impact Factors of Cultivated Land Intensive Use in Zhejiang Province

According to the statistical and survey data of land use change in Zhejiang Province from 2002 to 2011 and the date of the cities in Zhejiang Province in 2012, aiming at the cultivated land intensive use, the evaluation index system of cultivated land intensive use was established, which included 4 aspects and 12 specific indicators from the aspects of input intensity, output level, utilization degree and sustainable conditions of land. We evaluated the time serial change law of cultivated land use in Zhejiang Province and appraised the spatial variation characteristics of cultivated land use of the cities of Zhejiang Province through the efficacy coefficient method. The results showed that:the temporal variability of intensive use level of cultivated land was very obvious and the level of cultivated land increased with volatility in recent 10 a. The spatial variance of the intensive use was remarkable, showing a trend of higher in north area and lower in south area. The socio-economic development, agricultural development and policy factors were the three main factors that affected the situation of cultivated land intensive use.