[1]SHI Kai-fang,DIAO Cheng-tai.Development of Grain Production and Spatial Pattern of Land Carrying Capacity in Chongqing City[J].Research of Soil and Water Conservation,2012,19(04):168-171.
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Development of Grain Production and Spatial Pattern of Land Carrying Capacity in Chongqing City
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
19
Number of periods:
2012 04
Page number:
168-171
Column:
Public date:
2012-08-20
- Title:
- Development of Grain Production and Spatial Pattern of Land Carrying Capacity in Chongqing City
- Keywords:
- grain; land carrying capacity; land carrying capacity index; spatial pattern; Chongqing City
- CLC:
- F326.11
- DOI:
- -
- Abstract:
- With the growth of population, land carrying capacity and food safety have attracted great attention worldwide. In this study, the characteristics of development of grain production in Chongqing City were analyzed and summarized firstly, and then, land carrying capacity (LCC) and land carrying capacity index (LCCI) models were developed from the point of man-grain relationship. Finally, the LCCI was calculated for each county of Chongqing in 2009, and the current situation of land carrying capacity and its spatial pattern were systematically evaluated. The results showed that: from 1985 to 2010, the grain production of Chongqing City presented an upward tendency and the population growth rate was less than that of grain yield, and the grain yield per capita kept stable; food deficits and population overloading remained the primary characteristics of LCC of Chongqing City at a county scale in 2009. The 8 counties of Metropolitan Developed Circle and the counties of Northeast of Chongqing City had a man-grain conflict and appeared to be population overloading, and the grain balance counties located in the southeast of Chongqing and west of Chongqing City, and the 5 counties kept grain surplus. Therefore, for counties with a deficit in grain production, large amount of grain should be traded and transported from other counties in order to meet people’s demands.
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Last Update:
1900-01-01