| Analysis of dynamic changes and driving forces of area of cultivated land in Loess hilly-gully region — A case study of Wuqi County |
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| DOI：10.7606/j.issn.1000-7601.2009.03.45 |
| Key Words: area of cultivated land driving force method of principal component regression analysis |
| Author Name | Affiliation | | BIAN Depeng | College of Resources and Environment Northwest A＆F University, Yangling, Shannxi 712100, China | | CHANG Qingrui | College of Resources and Environment Northwest A＆F University, Yangling, Shannxi 712100, China | | LIU Yibo | College of Resources and Environment Northwest A＆F University, Yangling, Shannxi 712100, China | | DUAN Zhengsong | College of Resources and Environment Northwest A＆F University, Yangling, Shannxi 712100, China | | GAO Xin | College of Resources and Environment Northwest A＆F University, Yangling, Shannxi 712100, China | | ZHANG Tiechan | College of Resources and Environment Northwest A＆F University, Yangling, Shannxi 712100, China |
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| Abstract: |
| The paper analyzes the process of area changes of cultivated land based on the statistic and investigation data in Wuqi County from 1950 to 2005.It tries to find out the main driving factors on the changes using principal component analysis and multiple linear regressions.The research shows that the total area of arable land in Wuqi County was decreasing 39.6% in the past 50 years, through the four phases of sharp decreasing, fluctuating, sharp increasing and slow decreasing.There was also an obvious downtrend on the average per capita amount of arable land which decreased 81.7%.The changes were mainly influenced by socioeconomic development, population pressure, progress of agricultural science and policies, etc. |
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