Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (33): 162-168.doi: 10.11924/j.issn.1000-6850.casb16060160

Special Issue: 耕地保护

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Dynamic Analysis and Prediction of Cultivated Land Pressure in Henan Province Based on Food Security

  

  • Received:2016-06-29 Revised:2016-11-04 Accepted:2016-08-16 Online:2016-11-25 Published:2016-11-25

Abstract: To elaborate the cultivated land pressure and food supply situation, based on statistical data, the authors analyzed dynamic changes of cropland, population and grain yield from 1978 to 2012 in Henan Province, cultivated land pressure index and land source carrying capacity index were calculated, the cultivated land pressure index of 2013 to 2022 was predicted by grey Markov model. The results showed that since 1978, although total cultivated land area and per capita cultivated land area decreased, total grain yield and per capita yield steadily increased due to the increase of cultivated land productivity, thus cultivated land pressure index and land source carrying capacity index showed wave declining trends. The predicting results showed that cultivated land pressure index would continue to decline slowly from 2013 to 2022. In conclusion, the increase of agricultural technology level and the multiple cropping index could alleviate cultivated land pressure and ensure regional food security.

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