SCIENTIA GEOGRAPHICA SINICA ›› 2017, Vol. 37 ›› Issue (9): 1392-1402.doi: 10.13249/j.cnki.sgs.2017.09.012

• Orginal Article • Previous Articles     Next Articles

Coupling Relationship and Trend of Cultivated Land Productivity and Food Security: A Case Study of Henan Province

Pengyan Zhang1,2(), Bo Pang1, Jianjian He1, Yi Guo1, Lianqi Zhu1()   

  1. 1.College of Environment and Planning, Henan University, Kaifeng 475004, Henan,China
    2. Collaborative Innovation Center of Urban-Rural Coordination Development, Zhengzhou 410001, Henan, China
  • Received:2016-11-14 Revised:2017-01-20 Online:2017-11-20 Published:2017-11-20
  • Supported by:
    National Natural Sciences Foundation of China (General Program) (41601175), Philosophy and Social Sciences Planning Project of Henan Province (2014CJJ016), Foundation and Advanced Technology Research Plan of Henan Province (152300410067), University Science and Technology Innovation Team Support Plan of Henan Province (16IRTSTHN012).

Abstract:

Food is the important guarantee of the social and economic development. By taking the Henan Province agricultural data (2014-2015) as the indicator layer, this article assessed the food security in Henan Province by using standard cultivated land coefficient model, food resources carrying capacity, cultivated land pressure index model and food safety driving force model. The results showed that: 1) From 2005 to 2014, the overall cultivated land productivity increased steadily, the farmers’ enthusiasm for growing grain increased by 10% in study area, the pressure index of cultivated land decreased by 71%, the farmers’ income increased by 13%, and the gravity center of the cultivated land showed a southwest movement trend. It’s that cultivated land resource in 10 years appeared in the southwest area of cultivated land resource is higher than the northeast, the southwestern cities of cultivated land resources protection weak in northwestern region of Henan Province; 2) Between 2005 and 2009, the contribution rate of planting ratio of grain to the arable land productivity in Henan Province was 80.61%; In 2010-2014, contribution rate extreme value transferred to grain yield per unit, and its contribution rate was 100.37%; Compared with grain yield per unit area, planting ratio of grain had a leading role in improving the productivity of cultivated land in Henan Province. In addition, overall situation of cultivated land productivity will increase steadily, and cultivated land pressure coefficient and standard has obvious negative correlation between cultivated land coefficient, cultivated land pressure index space distribution in northern and eastern pressure is low, cultivated land pressure decrease gradually from west to east; 3) Fertilizer input, the farmers' enthusiasm for growing grain and protection ability of cultivated land had a strong coupling relationship with food security; However, the farmers’ enthusiasm for growing grain and protection ability of cultivated land presented a negative correlation. High cultivated land pressure index of Zhengzhou and Sanmenxia is the result of social and economic elements and natural geographical environment. In terms of Zhengzhou, the limited urban area within the scope of regional economic development, get more economic benefit, is the important foothold of its development. In terms of unit efficiency, the unit of second and third industry output value is much higher than the first industry, cultivated land become one of main way to obtain higher economic benefits. The behavior of lead to Zhengzhou City since 2005 cultivated land pressure index is high, and the food security situation showed a trend of deterioration.

Key words: food security, cultivated land pressure index, driving force model, Henan Province

CLC Number: 

  • K903