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Scientia Silvae Sinicae ›› 2004, Vol. 40 ›› Issue (5): 10-15.doi: 10.11707/j.1001-7488.20040502

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Analysis of the Impact of Converting Cropland to Forest and Grassland on Grain Production in Zhangbei County

Zhang Zhidong,Huang Xuanrui,Zhang Yuzhen,Nie Ben,Hu Yushan   

  1. Hebei Agricultural University Baoding 071000；Manduhai Park of Huhehaote City in Neimenggu Autonomous Region Huhhot 010019；Academy of Forest Inventory & Planning of Zhangjiakou City in Hebei Province Zhangjiakou 075000
  • Received:2004-01-16 Revised:1900-01-01 Online:2004-09-25 Published:2004-09-25

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Abstract:

The conversion of cropland to forestland or grassland is an effective way to restore degraded ecosystem.However, to some extent,it may necessarily influence the food security of some regions.This paper took Zhangbei County of Hebei Province as an sample of research object and analysed the impact of conversion of cropland to forestland or grassland on grain production.According to the model of minimum cultivated area per capita and the index of farmland pressure, the evaluation of food security in the villages and towns of Zhangbei County was conducted.Based on the evaluation of food security, the regulative mechanism for the project of the conversion of cropland to forestland or grassland was built up,which ensure that the project of the conversion of cropland to forestland or grassland was executed more sustainedly,steadily and healthily.

Key words: Zhangbei County, Conversion of cropland to forest and grassland, Food security, Regulative mechanism