JOURNAL OF NATURAL RESOURCES ›› 2011, Vol. 26 ›› Issue (5): 755-768.doi: 10.11849/zrzyxb.2011.05.004

• Resources Ecology • Previous Articles     Next Articles

Impact of Grain for Green Project on Ecosystem Service Values in the Hilly Region in Sichuan Basin: A Case Study of Hongya County

LAI Yuan-chang, LI Xian-wei, FENG Shuai, WANG Peng, TANG Jiao-ping, ZHAO An-jiu, LAI Jia-ming   

  1. Forestry Ecological Engineering in Upper Reaches of Yangtze River Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya’an 625014, China
  • Received:2010-08-13 Revised:2010-12-03 Online:2011-05-20 Published:2011-05-20

Abstract: Grain for Green Project is the most critical forestry ecological program of China. In this paper, a case study of the Hongya County in the hilly region in Sichuan Basin by using RS-GIS techniques and referencing the table ecosystem service value per unit area of Chinese terrestrial ecosystem, and combining with the local grain yield and grain purchasing price, this paper analyzed the changes of ecosystem service value between 1994-1999 and 1999-2007, two stages before and during the implementation of Grain for Green Project, and explored the impact of Grain for Green Project on ecosystem service values. The results show that the land use has been declining by the reason of Grain for Green Project; the magnitude of land use exhibited a decreasing trend of the study area. The ecosystem service values changed slightly in 1994-1999, but the ecosystem service values changed tremendously in 1999-2007, the total ecosystem service values increased by 2.90×108 yuan, the possible reason was farmland ecosystem service value decreased and wood land ecosystem service value increased. Each ecosystem service value was increased except food production, and the water supply value increased most, the water supply value increased by 0.78×108 yuan. Sensitivity analysis indicated that the estimated total ecosystem services value in the study area was inelastic to the services value coefficients change, and the results shown in this study were stable.

Key words: Grain for Green Project, hilly region, ecosystem service value, land use/cover change

CLC Number: 

  • F062.2