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Spatiotemporal Changes in Crop Residues with Potential for Bioenergy Use in China from 1990 to 2010
State Key Laboratory of Resources and Environmental Information Systems, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
University of Chinese Academy of Sciences, Beijing 100049, China
* Author to whom correspondence should be addressed.
Received: 11 July 2013; in revised form: 15 November 2013 / Accepted: 19 November 2013 / Published: 27 November 2013
Abstract: China has abundant crop residues (CRE) that could be used for bioenergy. The spatiotemporal characteristics of bioenergy production are crucial for high-efficiency use and appropriate management of bioenergy enterprises. In this study, statistical and remote-sensing data on crop yield in China were used to estimate CRE and to analyze its spatiotemporal changes between 1990 and 2010. In 2010, China’s CRE was estimated to be approximately 133.24 Mt, and it was abundant in North and Northeast China, the middle and lower reaches of the Yangtze River, and South China; CRE was scarce on the Loess and Qinghai–Tibet Plateaus. The quantity of CRE increased clearly over the 20-year analysis period, mainly from an increase in residues produced on dry land. Changes in cultivated land use clearly influenced the changes in CRE. The expansion of cultivated land, which mainly occurred in Northeast and Northwest China, increased CRE by 5.18 Mt. The loss of cultivated land, which occurred primarily in North China and the middle and lower reaches of the Yangtze River, reduced CRE by 3.55 Mt. Additionally, the interconversion of paddy fields and dry land, which occurred mostly in Northeast China, increased CRE by 0.78 Mt. The findings of this article provide important information for policy makers in formulating plans and policies for crop-residue-based bioenergy development in China, and also for commercial ventures in deciding on locations and production schedules for generation of bioenergy.
Keywords: China; spatiotemporal changes; bioenergy; crop residues
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MDPI and ACS Style
Xu, X.; Fu, Y.; Li, S. Spatiotemporal Changes in Crop Residues with Potential for Bioenergy Use in China from 1990 to 2010. Energies 2013, 6, 6153-6169.
Xu X, Fu Y, Li S. Spatiotemporal Changes in Crop Residues with Potential for Bioenergy Use in China from 1990 to 2010. Energies. 2013; 6(12):6153-6169.
Xu, Xinliang; Fu, Ying; Li, Shuang. 2013. "Spatiotemporal Changes in Crop Residues with Potential for Bioenergy Use in China from 1990 to 2010." Energies 6, no. 12: 6153-6169.