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[1]LIANG Yu-hua,ZHANG Jun-yi,FAN Yun-long.Study on Diagnostic Characteristics and Risk Evaluation of Degraded Ecosystem in Karst Area—A Case Study of Bijie Karst Rocky Desertification[J].Research of Soil and Water Conservation,2013,20(01):240-245.

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Study on Diagnostic Characteristics and Risk Evaluation of Degraded Ecosystem in Karst Area—A Case Study of Bijie Karst Rocky Desertification

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 20 Number of periods: 2013 01 Page number: 240-245 Column: Public date: 2013-02-28

Title:: Study on Diagnostic Characteristics and Risk Evaluation of Degraded Ecosystem in Karst Area—A Case Study of Bijie Karst Rocky Desertification

Author(s):: LIANG Yu-hua¹, ZHANG Jun-yi^2,1, FAN Yun-long¹; 1. Geography and Tourism Department of Guizhou Normal College, Guiyang 550003, China;
2. School of Geographic & Oceanographic Sciences, Nanjing University, Nanjing 210046, China

Keywords:: degraded ecological system; karst rocky desertification; risk assessment; index system

CLC:: X826

DOI:: -

Abstract:: The quantitative evaluation of karst degraded ecosystems is the basis for restoring degraded ecosystem. Taking the karst degraded ecosystems as the case study, based on the ‘Natural-Interference-response’ frame, the karst degraded ecosystem evaluation indicator system was established which included the system feature, interference and state feature, response feature and so on. Based on the analysis of diagnostic feature of degraded ecosystem and environment characteristics in karst region, the karst ecological deterioration(rocky desertification) evaluation index system was established. As a case of Bijie region, it has been preliminary evaluated with method of grade evaluation and comprehensive evaluation. The results showed that the karst ecological deterioration risk comprehensive evaluation scored 2.40 points, ecological deterioration risk assessment was the third Class, and the characteristics of the system, the disturbance and the state, response were scored 3.1, 1.83, 2.25 points, respectively. The results also showed that interference was the main reason for degraded system, followed by the local social economic development lag behind, leading to social economic strength small response.

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