SCIENTIA GEOGRAPHICA SINICA ›› 2014, Vol. 34 ›› Issue (1): 54-59.doi: 10.13249/j.cnki.sgs.2014.01.54

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Changes in Arable Land Area in Qinzhou City and Its Driving Force Based on the Principle Component Analysis

Mei-qiong WU1(), Xiu-gui CHEN2   

  1. 1.Guangxi Technology College of Water Conservancy and Electric Power, Nanning, Guangxi 530023, China
    2.Land and Resources Planning Institute of Guangxi, Nanning, Guangxi 530028, China)
  • Received:2013-01-07 Revised:2013-03-15 Online:2014-01-10 Published:2013-08-16


The protection of arable land use plays an important role in the food security and it is of great importance to protect arable land resources. In the process of arable land use, driving forces that affect the changes in arable land area is rather complicated. With Qinzhou City as a case study, in order to provide a guidance for making reasonable policy in protecting arable land, this article is to research the driving forces from 2001 to 2010 that affect the arable land changes and reveal this mechanism, adopting the principle component analysis in terms of economy, population, agriculture and land. The study indicates that the arable land area in Qinzhou City decreases annually with an average of 460 ha. The main reasons are construction land use and disaster destroy as well as abandoned land. Economy and social developments as well as agriculture development that affect arable land changes in Qinzhou City are also the major driving forces of arable land changes. Meanwhile, economy and social development inevitably occupy a certain amount of arable land, but it is difficult to make up arable land with the same quality and quantity, which results in the decrease of arable land. The increasing population will boost the process of urbanization, where residences and infrastructures will occupy large amount of arable land. Agriculture that affects arable land changes mainly reflects on the industry adjustment, in which farmers readjust the agricultural structure automatically according to the benefits and it leads to the decreasing quality and quantity of a certain amount of arable land. Measures such as reducing construction land use and developing land use as well as raising land use efficiency can be taken to curb the trend of decreasing arable land in Qingzhou City. Effective plans such as land reclamation and using the used land as well as saving land use can be made to control land decreasing to protect arable land to a greater extent.

Key words: arable land area change, arable land protection, Qinzhou City

CLC Number: 

  • F301.21