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[1]ZHOU Fei,GUO Liang-zhen,CHEN Shi-yin,et al.Evalution on Ecological Security of Land Resource and Its Limiting Factors in Zhanjiang City[J].Research of Soil and Water Conservation,2010,17(05):202-206,211.

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Evalution on Ecological Security of Land Resource and Its Limiting Factors in Zhanjiang City

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 05 Page number: 202-206,211 Column: Public date: 2010-10-20

Title:: Evalution on Ecological Security of Land Resource and Its Limiting Factors in Zhanjiang City

Author(s):: ZHOU Fei, GUO Liang-zhen, CHEN Shi-yin, WU Xue-biao; Agricultural College of Guangdong Ocean University, Zhanjiang, Guangdong 524088, China

Keywords:: land resource; ecological security evaluation; limiting factors; Zhanjiang city

CLC:: F301.24;X825

DOI:: -

Abstract:: On the basis of PSR (Pressure-State-Response) model, a system of 26 indexes for evaluating land resource ecological security is established in this paper. Assessment on the ecological security of land resource in Zhanjiang from 1996 to 2008 was carried out and the limiting factors were also analyzed according to the security index. As the results shown, the performance of state subsystem of land resource in Zhanjiang was encouraging as a whole, while which was under slow degradation. Although it was gradually improved, the status of pressure subsystem and response subsystem was still unsatisfactory on the whole. Conclusively, ecological security of land resource in Zhanjiang was at the average level. In addition, population growth and unscientific application of chemical fertilizers were the principle limiting factors of pressure subsystem. Meanwhile, the state system was mainly limited by continuous decrease in cultivated land, relatively low forest coverage and poor irrigation and water conservancy facilities. As for response system, it was mainly restricted by low proportion of tertiary industry and inadequate development of education and technology.

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