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Proceedings Paper

Recent land-use change and its impact on farmland productivity in China
Author(s): Jiyuan Liu; Xinliang Xu; Zhiqiang Gao; Dafang Zhuang
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Paper Abstract

Land-Use/Land-Cover Change (LUCC) affects farmland productivity by changing the quality of land resource and pattern of land-use. Based on meteorological data and land-use/cover observation dataset obtained from the dynamic serving system of National Resources and Environment Database (NRED), this paper calculated the Photosynthetic Thermal Productivity (PTP)of farmland, and analyzed impact of recent LUCC and climate fluctuation on PTP. Results showed that under the influence of LUCC, PTP distribution had an extensive and unbalanced change. LUCC increased China’s total PTP by 26.22 million tons, while climate fluctuation increased it by 169.92 million tons. The ratio between LUCC and climate fluctuation was 1:6.48. Due to the direct effect of LUCC, PTP increased in the following regions: Northeastern Plain, Inner Mongolia, and Xinjiang province. This increase was primarily driven by plantation reclamation. PTP decreased in the Huang-Huai-Hai Plain, the Yangtse Rive delta, the Zhujiang delta, the Southeastern coastal provinces, the southeastern Sichuan basin and the Xinjiang oasis. The decrease was mainly caused by urban expansion.

Paper Details

Date Published: 9 November 2004
PDF: 6 pages
Proc. SPIE 5544, Remote Sensing and Modeling of Ecosystems for Sustainability, (9 November 2004); doi: 10.1117/12.563312
Show Author Affiliations
Jiyuan Liu, Institute of Geographical Sciences and Natural Resources Research, CAS (China)
Xinliang Xu, Institute of Geographical Sciences and Natural Resources Research, CAS (China)
Zhiqiang Gao, Institute of Geographical Sciences and Natural Resources Research, CAS (China)
Dafang Zhuang, Institute of Geographical Sciences and Natural Resources Research, CAS (China)


Published in SPIE Proceedings Vol. 5544:
Remote Sensing and Modeling of Ecosystems for Sustainability
Wei Gao; David R. Shaw, Editor(s)

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