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Crop production changes and the impact of Grain for Green program in the Loess Plateau of China

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Abstract

Since the Grain for Green (GFG) program was implemented in 1999, most steeply sloping farmlands in the Loess Plateau of China have been returned to forestland and grassland. To understand its impact on the food production, this study analyzed the spatiotemporal changes of food crop production (FCP) in the plateau and quantified the contribution of sown area and yield changes to the total FCP during 1998–2014 using factor decomposition models, and then discussed the impact of GFG program on the FCP based on literature data. With the implementation of GFG program, total sown area in the Loess Plateau quickly deceased by 17.3% from 1998 to 2003, and then gradually restored to 1.03×107 hm2 in 2010. Thereafter, it slightly decreased to 1.02×107 hm2 (94.6% of the area in 1998) in 2014. By contrast, total FCP generally showed an apparent growth trend, averagely increased by 1.71% per year in the whole plateau during 1998–2014. This increase was jointly contributed by the improved yield of individual crops, and the adjustment of cropping structure, i.e., the expansion of high yield maize crop. The factor decomposition analysis results indicate that the sown area shrinkage only reduced the growth rate of total FCP by 0.29% per year during 1998–2014, although a significant impact was found for the early stage of 1999–2003. The results suggest that the implementation of GFG program would not induce an obvious risk of the food security. Therefore, it is suggested that the GFG program should be set as a long-term strategic policy, by not only supporting the conversion of slope farmlands, but also helping local farmers to seek sustainable ways of land use to improve the income and livelihood. It can be combined with the poverty eradication program, to simultaneously achieve the national goals of ecological civilization building and the livelihood improvement of rural people in the Loess Plateau. Considering rainfall limitation, the conversion of slope farmlands should be prioritized to grasslands.

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Acknowledgements

This work was jointly supported by the National Natural Science Foundation of China (41671093), and the National Key R&D Program of China (2017YFA0604701, 2012CB955304). We thank the three anonymous reviewers for their critical comments and constructive suggestions.

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Authors and Affiliations

  1. Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China

    Changhe Lyu & Zhiyuan Xu

  2. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China

    Changhe Lyu & Zhiyuan Xu

  3. Institute of Rural Development, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China

    Zhiyuan Xu

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  1. Changhe Lyu
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Correspondence to Changhe Lyu.

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Lyu, C., Xu, Z. Crop production changes and the impact of Grain for Green program in the Loess Plateau of China. J. Arid Land 12, 18–28 (2020). https://doi.org/10.1007/s40333-020-0091-9

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  • DOI: https://doi.org/10.1007/s40333-020-0091-9

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