High-efficient utilization of agricultural resources is a key factor for food security, and the order list of agricultural resource utilization can provide effective reference for further exploitation of agricultural resources. In this article, the author puts forward the concept and estimates model of development dominance ratio of agricultural resources on the basis of agricultural produce potential and agricultural resources utilization efficiency. Taking Gansu province as a case, the list of development dominance ratio of agricultural resource is evaluated and analyzed. The results of the study show that: the model of development dominance ratio of agricultural resource can simulate further exploitation potential and regional difference of agricultural resources in Gansu province. Farmland development dominance ratio can reflect comprehensive development dominance ratio. In the rain-fed agricultural zone, such as Longnan, Longdong and Longzhong districts, the development dominance ratio of agricultural resources is about 4 to 5 levels. The condition is the same in the plateau region of Gannan Prefecture, due to the high exploitation potential of abundant light resources. Because irrigation agriculture promotes farmland productivity, in Hexi Oasis irrigation agricultural zone, the development dominance ratio of agricultural resources is lower, being 1 to 2 levels. However, because the agro-ecosystem is degenerated, the development dominance ratio of agricultural resources in Minqin and Jinchang districts is lower than other irrigation zone, being about 3 levels.
ZHENG Hai-xia, FENG Zhi-ming
. The analysis on development dominance ratio of agricultural resources in Gansu Province[J]. GEOGRAPHICAL RESEARCH, 2007
, 26(5)
: 1013
-1020
.
DOI: 10.11821/yj2007050018
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