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[1]LIU Yun-wei.Spatiotemporal Characteristics of Cultivated Land and Grain Output in the Typical Mountain Areas—A Case Study of Liangshan Prefecture, Sichuan Province[J].Research of Soil and Water Conservation,2014,21(05):198-203.

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Spatiotemporal Characteristics of Cultivated Land and Grain Output in the Typical Mountain Areas—A Case Study of Liangshan Prefecture, Sichuan Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 21 Number of periods: 2014 05 Page number: 198-203 Column: Public date: 2014-10-28

Title:: Spatiotemporal Characteristics of Cultivated Land and Grain Output in the Typical Mountain Areas—A Case Study of Liangshan Prefecture, Sichuan Province

Author(s):: LIU Yun-wei^1,2,3; 1. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;
2. Agricultural Sciences of Xichang College, Xichang, Sichuan 615013, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China

Keywords:: Liangshan prefecture; cultivated land area; grain output; minimum cultivated land area per capita; cultivated land pressure index; spatiotemporal characteristics

CLC:: F323.211;F326.11

DOI:: -

Abstract:: The typical mountain area in southwest China named Liangshan Yi Autonomous Prefecture of Sichuan Province was taken as an example. This paper analyzed the temporal changes and spatial distribution characteristics of cultivated land area(CLA) and grain output(GO) by employing the method of descriptive statistics, cultivated land pressure index(CLPI), cluster analysis, etc. The results showed that :(1) from 1999 to 2011, the total cultivated area and total grain output had a process of increase, and the cultivated land area per capita presented a decreased trend, the grain output per capita and the grain output per unit appeared to be a fluctuating upward trend, during the period 1999 to 2011, the CLPI was always less than 1, so there was no arable land pressure in Liangshan prefecture; (2) the CLA, GO, minimum cultivated land area per capita and CLPI had significant spatial difference, 8 counties had cultivated land pressure, 7 counties basically had no cultivated land pressure, and 2 counties had no cultivated land pressure. Lastly, this paper simply discussed the related policies and measures on protecting cultivated land and achieving food security in the mountain areas.

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