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An Analysis on Development Dominance Ratio of Agricultural Resources in Gansu Province Based on GIS

机译：基于GIS的甘肃农业资源开发优势比分析

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The efficient utilization of agricultural resources is the key issue of food security. The sequencing of dominance ratio of agricultural resources provides reference for its effective development. This paper brings forth the concept and a model of development dominance ratio (DDR) of agricultural resources on the base of the development potential and utilization efficiency of agricultural resources. Also, this paper, taking Gansu province as an example, analyses the DDR sequence of agricultural resources in Gansu province. It indicates that this model exactly simulates the current situation and regional differences of the DDR of agricultural resources in Gansu. As a comprehensive index of DDR of agricultural resources, DDR of arable land resources ranks in level 4-5 at rain-fed agricultural areas like Longnan, Longdong & Longzhong and lightabundant regions like Gan'nanzhou. Since its arable land production capacity gets well-developed, the DDR of agricultural resources of Hexi oasis irrigated agricultural area is about level 1-2. However, the DDR of agricultural resources at the two areas, namely MinQin and Jinchang, is in the middle, level 3.
机译：农业资源的有效利用是粮食安全的关键问题。农业资源主导率的测序为其有效发展提供了参考。本文提出了农业资源开发占优势比（DDR）的概念和模型，基于农业资源的发展潜力和利用效率。此外，采用甘肃省为例，分析了甘肃省农业资源的DDR序列。它表明，该模型恰好模拟了甘肃农业资源DDR的现状和区域差异。作为农业资源DDR的综合指数，龙湾，龙洞和龙忠和甘油州龙忠和龙忠和岩石地区等雨粮农业区的DDR等级为4-5级。由于其耕地生产能力充分发达，河西绿洲农业资源的DDR灌溉农业面积约为1-2级。但是，两个领域的农业资源DDR，即民勤和金昌，在中间，3级。

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