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[1]ZHANG Jin-xin,MU Xing-min,WANG Fei,et al.Relationship Between Cultivated Land Change and Food Security in Yulin City[J].Research of Soil and Water Conservation,2009,16(02):160-164.

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Relationship Between Cultivated Land Change and Food Security in Yulin City

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 16 Number of periods: 2009 02 Page number: 160-164 Column: Public date: 2009-04-20

Title:: Relationship Between Cultivated Land Change and Food Security in Yulin City

Author(s):: ZHANG Jin-xin¹, MU Xing-min¹, WANG Fei¹, LIU Yu-lan¹, WANG Jian³; 1. College of Resource and Environment, Northwest A & F University, Yangling, Shanxi, 712100, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling, Shanxi, 712100, China;
3. Xifeng Soil and Water Conservation Experimental Station of YRCC, Qingyang, Gansu, 745000, China

Keywords:: food security; cultivated land; correlative analysis; Yulin city

CLC:: F301.24

DOI:: -

Abstract:: Cultivated land resource is the foundation of food production and food security.According to the ‘food crisis’ which is initiated by the increased food price,food security in China has become a focus once again,which is concerned by the public.This paper analyzed the changes of cultivation land resources from 1949 to 2005 in Yulin city.On the basis of this analysis,the relationship between cultivated land area and the inter-annual change ratio of food production in different historical stages was studied,and the safeguard measures of the food security in Yulin City were proposed.The results were as follows:the cultivated land area of Yulin City and the cultivated land area per capita showed the downtrend.The changes of cultivated land had a basic restrict effect on the food production.However,there was no complete synchronization in the trend of inter-annual change ratio between cultivated land area and food production.The application of agricultural technology could not only counteract the food reduction,which was caused by the reduction in cultivated land area,but also improve the food total production greatly.However,the amount of cultivated land was still an important fator of food total production stabilization.

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