Cultivated Land Dynamic Change and Gain Security in Mizhi County of Shaanxi Province

ZHAO Lian-wu; XIE Yong-sheng; WANG Ji-jun; LIU Tao; HE Yi-feng

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Cultivated Land Dynamic Change and Gain Security in Mizhi County of Shaanxi Province

- Cultivated Land Dynamic Change and Gain Security in Mizhi County of Shaanxi Province
- Bulletin of Soiland Water Conservation Vol. 28, Issue 4, Pages: 143-148(2009)
- 作者机构：
  
  1. 西北农林科技大学资源环境学院, 山西杨凌,712100
  2. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：
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- Published：2009
- 稿件说明：
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ZHAO Lian-wu, XIE Yong-sheng, WANG Ji-jun, et al. Cultivated Land Dynamic Change and Gain Security in Mizhi County of Shaanxi Province[J]. Bulletin of Soiland Water Conservation, 2009, 28(4): 143-148.
DOI：

ZHAO Lian-wu, XIE Yong-sheng, WANG Ji-jun, et al. Cultivated Land Dynamic Change and Gain Security in Mizhi County of Shaanxi Province[J]. Bulletin of Soiland Water Conservation, 2009, 28(4): 143-148. DOI：

摘要

根据米脂县1990-2007年粮食生产的相关数据，对该县耕地、人口和粮食生产动态变化以及粮食总产与其影响因素进行了灰色关联度分析。结果表明，退耕还林还草工程是耕地总面积迅速减少的主要原因;提高粮食单产保障粮食总产是实现粮食安全的最关键因子;持续增长的人口造成耕地的承载压力越来越大，并对该区实现粮食安全提出了更大的挑战。最后，根据分析结果提出了增加科技投入，提高单产，保护耕地，挖掘耕地潜力等措施以保障该区域的粮食安全，为政府部门制定相关粮食安全政策提供科学的理论依据。

Abstract

Based on the correlation data of grain production in Mizhi County from 1990 to 2007，the grey correlation analysis is made to analyze grain production with the variation characteristics of the cultivated land，population，and other influencing factors. Results show that the program for the conversion from cropland to forest and grassland is the main reason for the cultivated land decrease. Improvement of unit yield and total grain production is the key factor to protect grain security. Population growth has a great influence on the bearing capacity of cultivated land and put forward a greater challenge to grain security in the area. To increase the grain yield

some suggestions are put forward

such as increasing science and technology input to enhance unit yield

protecting cultivated land

and excavating the potential of cultivated land. The study provides a scientific basis for government policy making.

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