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.
榆林市耕地资源与粮食安全研究
- Title:
- Relationship Between Cultivated Land Change and Food Security in Yulin City
- Keywords:
- food security; cultivated land; correlative analysis; Yulin city
- 分类号:
- F301.24
- 摘要:
- 耕地资源是粮食生产及粮食安全的基础.针对世界粮价飙升所引发的“粮食危机”,我国的粮食安全又重新成为社会所关注的焦点.在分析榆林市1949-2005年耕地资源变化的基础上,对耕地面积和粮食产量的年际变化率及不同历史阶段两者的相关关系进行分析,提出了榆林市粮食安全的保障措施.结果表明:1949-2005年,榆林市耕地面积及人均耕地面积均呈减少趋势;耕地数量变化对粮食生产具有根本的约束作用,但耕地面积与粮食产量的年际变化率的趋势并不完全同步,农业科技投入不仅抵消了因耕地面积减少所导致的粮食减产,而且可以使粮食总产出现较大增长,但耕地数量仍是稳定粮食总产的重要因素.
- 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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备注/Memo
收稿日期:2008-10-13;改回日期:。
基金项目:国家“十一五”科技支撑计划“水土保持耕作关键技术(2006BAD09B04)”专题;Challenge Program on Water and Food Conservation Agriculture Yellow River Drylands(CN288);欧盟项目(DESIRE,037046)
作者简介:张金鑫(1982- ),女,内蒙古通辽人,在读硕士,主要从事水土保持耕作及粮食安全方面研究.E-mail:zhang_jin_x