To prevent environmental degradation, China’s central government launched the “Grain for Green Project” (GGP) in 1999. Since its beginning, the effects and influences of the GGP have been hotly debated among domestic and international scholars and policymakers. This paper is taking the County of Yanchuan in the Loess Plateau as a case study, examines the spatio-temporal patterns of cropland conversion in response to the GGP. This research is methodologically based on remote sensing (RS) and geographic information systems (GIS), and also employs personal interviews with local government officials and farmers. The results show that land use/cover patterns in Yanchuan County have changed dramatically after the implementation of GGP. Cropland has decreased remarkably, while orchard land and sparse forest has increased significantly: 23.84% of cropland was converted to orchard, and 22.25% to sparse forest. Simultaneously, the landscape has become more fragmented but also more diversified, forestland has become more dominant. A total of 61.19% of the total converted cropland was on slopes greater than 15 degrees, 64.85% of which was lower-grade land. The converted cropland is mostly located in more accessible areas for convenient management. Partially affected by farmers’ self-willingness, sloping cropland was preferred to orchard (economic forest), and some gentle slope (less than 15 degrees) or higher-grade cropland were involved in the GGP. To maintain and reinforce the achievements of the GGP and further contribute to the GGP’s sustainability and rural development, the paper recommends that the Chinese government should build a continuous compensation mechanism for the households who lost cropland for the GGP while improving the productivity of flat cropland.
References
[1]
Yeh, E.T. Greening western China: A critical view. Geoforum 2009, 40, 884–894.
[2]
Liu, J.; Diamond, J. China’s environment in a globalizing world. Nature 2005, 435, 1179–1186.
[3]
WWF (World Wide Fund for Nature). Report Suggests China’s Grain-to-Green Plan is Fundamental to Managing Water and Soil Erosion. Available online: http://www.wwfchina.org/english/loca.php?loca=159 (accessed on 21 March 2003).
[4]
Zhou, H.; van Rompaey, A.; Wang, J.A. Detecting the impact of the “Grain for Green” program on the mean annual vegetation cover in the Shaanxi province, China using SPOT-VGT NDVI data. Land Use Policy 2009, 26, 954–960.
[5]
Bullock, A.; King, B. Evaluating China’s slope land conversion program as sustainable management in Tianquan and Wuqi Counties. J. Environ. Manag 2011, 92, 1916–1922.
[6]
Liu, J.; Li, S.; Ouyang, Z.; Tam, C.; Chen, X. Ecological and socioeconomic effects of China’s policies for ecosystem services. Proc. Natl. Acad. Sci. USA 2008, 105, 9477–9482.
[7]
Cao, S.; Xu, C.; Chen, L.; Wang, X. Attitudes of farmers in China’s northern Shaanxi Province towards the land-use changes required under the Grain for Green Project, and implications for the project’s success. Land Use Policy 2009, 26, 1182–1194.
[8]
Xu, Z.; Xu, J.; Deng, X.; Huang, J.; Uchida, E.; Rozelle, S. Grain for green versus grain: Conflict between food security and conservation set-aside in China. World Dev 2006, 34, 130–148.
[9]
Uchida, E.; Xu, J.; Rozelle, S. Grain for green: Cost-effectiveness and sustainability of China’s conservation set-aside program. Land Econ 2005, 81, 247–264.
[10]
Xu, Z.; Bennett, M.T.; Tao, R.; Xu, J. China’s sloping land conversion programme four years on: Current situation, pending issues. Int. For. Rev 2004, 6, 317–326.
[11]
McVicar, T.R.; Li, L.; van Niel, T.G.; Zhang, L.; Li, R.; Yang, Q.; Zhang, X.; Mu, X.; Wen, Z.; Liu, W. Developing a decision support tool for China’s re-vegetation program: Simulating regional impacts of afforestation on average annual streamflow in the Loess Plateau. For. Ecol. Manag 2007, 251, 65–81.
[12]
Feng, Q.; Zhao, W.; Qiu, Y.; Zhao, M.; Zhong, L. Spatial heterogeneity of soil moisture and the scale variability of its influencing factors: A case study in the loess plateau of China. Water 2013, 5, 1226–1242.
[13]
Egbert, S.L.; Lee, R.Y.; Price, K.P.; Boyce, R.; Nellis, M.D. Mapping conservation reserve program (CRP) grasslands using multi-seasonal thematic mapper imagery. Geocarto Int 1998, 13, 17–24.
[14]
Long, H.; Wu, X.; Wang, W.; Dong, G. Analysis of urban-rural land-use change during 1995–2006 and its policy dimensional driving forces in Chongqing, China. Sensors 2008, 8, 681–699.
[15]
Kaufmann, R.K.; Seto, K.C. Change detection, accuracy, and bias in a sequential analysis of Landsat imagery in the Pearl River Delta, China: Econometric techniques. Agric. Ecosyst. Environ 2001, 85, 95–105.
[16]
Vancutsem, C.; Marinho, E.; Kayitakire, F.; See, L.; Fritz, S. Harmonizing and combining existing land cover/land use datasets for cropland area monitoring at the African continental scale. Remote Sens 2013, 5, 19–41.
[17]
Matejicek, L.; Kopackova, V. Changes in croplands as a result of large scale mining and the associated impact on food security studied using time-series Landsat images. Remote Sens 2010, 2, 1463–1480.
[18]
Martínez, S.; Mollicone, D. From land cover to land use: A methodology to assess land use from remote sensing data. Remote Sens 2012, 4, 1024–1045.
[19]
State Forestry Administration. Master Plan for the Sloping Land Conversion Program. Unpublished Report; 2012.
[20]
Bennett, M.T. China’s sloping land conversion program: Institutional innovation or business as usual? Ecol. Econ 2008, 65, 699–711.
[21]
Feng, Z.; Yang, Y.; Zhang, Y.; Zhang, P.; Li, Y. Grain-for-green policy and its impacts on grain supply in West China. Land Use Policy 2005, 22, 301–312.
[22]
Ministry of Land and Resources. China Land & Resources Almanac 2010; Geological Publishing House: Beijing, China, 2011; pp. 212–214.
[23]
Zhou, D.; Zhao, S.; Zhu, C. The Grain for Green Project induced land cover change in the Loess Plateau: a case study with Ansai County, Shanxi Province, China. Ecol. Indic 2012, 23, 88–94.
[24]
Geospatial Cloud Data. Available online: http://datamirror.csdb.cn (accessed on 12 February 2013).
[25]
Maxwell, S.; Schmidt, G.; Storey, J. A multi-scale segmentation approach to filling gaps in Landsat ETM+ SLC-off images. Int. J. Remote Sens 2007, 28, 5339–5356.
[26]
ASTER Global Digital Elevation Model. Available online: http://www.gdem.aster.ersdac.or.jp/search.jsp (accessed on 9 March 2013).
[27]
Manandhar, R.; Odeh, I.O.; Ancev, T. Improving the accuracy of land use and land cover classification of Landsat data using post-classification enhancement. Remote Sens 2009, 1, 330–344.
[28]
Forestry Bureau of Yanchuan County. The Report of Grain for Green Project of Yanchuan County (1999–2011). (In Chinese); Unpublished Report; 2012.
[29]
Mcgarigal, K.; Cushman, S.; Neel, M.; Ene, E. FRAGSTATS: Spatial Pattern Analysis Program for Categorical Maps, 2012. Available online: http://www.umass.edu/landeco/research/fragstats/fragstats.html (accessed on 8 May 2013).
[30]
Committee on Agricultural Regionalization of China. Technical Regulations on Land Use Survey. (In Chinese).; Chinese Survey&Mapping Press: Beijing, China, 1984; pp. 5–13.
[31]
Department of Land and Resources of Shaanxi Province. The 2007 Farmland Gradation of Yanchuan County. (In Chinese); Unpublished Report; 2011.
[32]
Ministry of Land and Resources. Regulation on Cropland Gradation (TD/T 1004–2003); Standards Press of China: Beijing, China, 2003; pp. 10–13.
[33]
Lele, N.; Nagendra, H.; Southworth, J. Accessibility, demography and protection: Drivers of forest stability and change at multiple scales in the Cauvery Basin, India. Remote Sens 2010, 2, 306–332.
[34]
Southworth, J.; Marsik, M.; Qiu, Y.; Perz, S.; Cumming, G.; Stevens, F.; Rocha, K.; Duchelle, A.; Barnes, G. Roads as drivers of change: Trajectories across the tri-national frontier in MAP, the Southwestern Amazon. Remote Sens 2011, 3, 1047–1066.
[35]
Krusekopf, C.C. Diversity in land-tenure arrangements under the household responsibility system in China. China Eco. Rev 2002, 13, 297–312.
[36]
Saltiel, J. Controversy over CRP in Montana: Implications for the future. J. Soil Water Conserv 1994, 49, 284–288.
