Multi-time Scale Analysis on the Cultivated Land Quantity in China Report as inadecuate




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This paper briefly introduces the concrete steps of EMD (Empirical Mode Decomposition) method, and applies EMD method into the multi-time scale analysis on fluctuation of cultivated land quantity and its driving force in China since 1949. We also reveal the fluctuation law in the amount of cultivated land quantity. At the same time, based on the fluctuation of different time scales, qualitative forecast on the fluctuation trend of cultivated land quantity in China in future is carried out in order to offer references for establishing prediction model of cultivated land quantity. Research result shows that downward trend of cultivated land quantity is inevitable in China in the future, showing a basic form of an exponential decline during a short period of time. However, situation will be improved with the implementing of a series of land-control policies and paying attention to the issue of rapid reduction of cultivated land. Thus, we put forward several suggestions: (1) Strengthen the research and control on the cultivated land quality in the overall land use planning; (2) strengthen the continuity and durability of land macro-control; (3) strengthen the protection responsibility of cultivated land for leadership at all levels.

Keywords: Cultivated land ; EMD ; Multi-time scale ; Driving force ; China

Subject(s): Land Economics/Use

Research Methods/ Statistical Methods

Resource /Energy Economics and Policy

Issue Date: Jun 20 2009

Publication Type: Journal Article

PURL Identifier: http://purl.umn.edu/53809 Published in: Asian Agricultural Research, Volume 01, Issue 06 Page range: 44-48

Total Pages: 5

Record appears in: USA-China Science and Culture Media Corporation > Asian Agricultural Research





Author: Liu, Zhiling ; Sun, Yan

Source: http://ageconsearch.umn.edu/record/53809?ln=en







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