Study on the Construction of Evaluation System of Cultivated Land Intensive Use in Different Spatial Scales

Abstract

The sustainable intensive use of cultivated land(SIUCL) is a strategic demand to change theway of agricultural development and promote the construction of ecological civilization. The comparative analysis of different scales and the scale transformation, extension and integration has an important influence on the sustainable and intensive use of cultivated land. This paper summarizes the construction principles of the evaluation system, and combs the evaluation of cultivated land intensive use at different spatial scales. The results show that (1) The studies on the intensive use of cultivated land at the macro-scale are the most which mainly include provinces, urban agglomerations, watersheds, economic zones, etc.. The evaluation system of intensive use of cultivated land at the macro-scale has gradually expanded from the evaluation of input intensity and output benefit to the evaluation of input intensity, output benefit, utilization degree and sustainability status. (2) The studies on the intensive use of cultivated land at the median-scale are mainly include small and medium-sized cities, counties, etc.. The evaluation indexes of intensive use of cultivated land at the median-scale includes input intensity, output effect, utilization level and sustainable utilization status, which is consistent with macro-scale studies. But all the indicators are more comprehensive. (3) The studies on the intensive use of cultivated land at the micro-scale are mainly include towns, villages, farmers, plots, etc.. Among them, in the evaluation system of cultivated land intensive use at the farmer scale, the selection of indicators is very different from that of macro-scale and median-scale studies. Most of the data come from farmer interviews, questionnaires, etc.