JOURNAL OF NATURAL RESOURCES ›› 2014, Vol. 29 ›› Issue (1): 13-26.doi: 10.11849/zrzyxb.2014.01.002

• Resources Utilization and Management • Previous Articles     Next Articles

Effect Mechanism Research of Influential Factors of Cultivated Land Use System Security of Black Soil Region in Songnen High Plain:A Case Study of Bayan County in Heilongjiang Province

SONG Ge1,2, WANG Yue1, LEI Guo-ping1   

  1. 1. Institue of Land Management, Northeast University, Shenyang 110819, China;
    2. School of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
  • Received:2012-09-10 Revised:2013-06-17 Online:2014-01-20 Published:2014-01-09

Abstract: Cultivated land use system security is the foundation of protecting the health of cultivated land and guaranteeing food supply security. This paper takes Bayan County as an example, to determine the cultivated land use system security effect mechanism with single factors and composite factors, using Matlab programming, adopting Genetic Algorithm to improve Neural Networks, and recognizing the sensitive influential factors of cultivated land use system security by applying Path Analysis. There are two aspects we can conclude from the results. Firstly, analysis of single factors role to the cultivated land use system security indicated the strongest action intensity to system security is soil types, the weakest is altitude. Soil texture, soil types, geomorphological types, available phosphorus, policies and regulations and drainage ability have positive correlations with cultivated land use system security, and can promote system security, and the intensity of soil texture is 0.3133, soil types is 0.6830, geomorphological types is 0.3627, available phosphorus is 0.1189, policies and regulations is 0.2553, drainage ability is 0.1872. Altitude, difference vegetation index (DVI), and water and soil erosion have negative correlations with cultivated land use system security, and can restrain system security, and the intensity of altitude is 0.1046, DVI is 0.2028, water and soil erosion is 0.2877. The factors have different positive and negative correlations and play the roles of promotion and inhibition for the system security. Other influential factors of the cultivated land use system security play a significant part to the system. Secondly, the influential factors have complex constraints relations. The significant effect mechanisms are both single factors and composite factors with different dominant features to the system security. Soil types, geomorphological types and soil texture as natural ecological factors are significant in single mechanism to system security. Policies and regulations and drainage ability as humanistic factors are significant in composite mechanism to system security. Single mechanism as natural ecological factors plays significant part for system security. Composite mechanism as humanistic factors plays significant part for system security.

Key words: black soil region in Songnen high plain, GA-BP factors dimensionality reduction model, cultivated land use system

CLC Number: 

  • F301.24