Pan Jing Hu, Dong Lei Lei
College of Geographic and Environmental Science, Northwest Normal University, Lanzhou 730070, China.
Ying Yong Sheng Tai Xue Bao. 2016 Sep;27(9):2907-2915. doi: 10.13287/j.1001-9332.201609.015.
Shule River Basin is a typical arid inland river basin and ecoenvironment-fragile region. Comprehensive evaluation of ecosystem quality in the Shule River basin is of great significance. The ecosystem productivity index (EPI), the ecosystem stability index (ESI) and the ecosystem bea-ring capacity index (EBCI) were proposed to build a remote sensing comprehensive evaluation mo-del to evaluate the ecosystem quality of Shule River basin during 2001-2010. The results showed that the mean ecosystem quality value in the Shule River basin was 43.21, which was at a relatively low level. The values of EPI, ESI, EBCI were 47.16, 58.09 and 28.52, respectively, indicating that ecosystem carrying capacity in the Shule River basin was poor in the period from 2001 to 2010. However, EPI and EBCI rose by 18.9％ and 20.1％, respectively, but ESI decreased slightly by 9.4%. The ecosystem quality showed a trend of increasing first and then decreasing from 2001 to 2010. The average ecosystem quality values in 2001, 2005 and 2010 were 43.71, 44.80 and 41.13, respectively. The farmland ecosystem quality was better than that of the other ecosystem types, and the water area ecosystem quality was the lowest. Overall, the comprehensive evaluation value of the artificial ecosystem quality was 46.43, which was significantly higher than that of the natural ecosystems.
疏勒河流域是典型的干旱内陆河流域和生态环境脆弱区。对疏勒河流域生态系统质量进行综合评价具有重要意义。提出了生态系统生产力指数（EPI）、生态系统稳定性指数（ESI）和生态系统承载能力指数（EBCI），构建遥感综合评价模型，对2001—2010年疏勒河流域生态系统质量进行评价。结果表明，疏勒河流域生态系统质量均值为43.21，处于较低水平。EPI、ESI、EBCI值分别为47.16、58.09和28.52，表明2001—2010年疏勒河流域生态系统承载能力较差。然而，EPI和EBCI分别上升了18.9％和20.1％，但ESI略有下降，降幅为9.4%。2001—2010年生态系统质量呈先上升后下降趋势。2001年、2005年和2010年生态系统质量均值分别为43.71、44.80和41.13。农田生态系统质量优于其他生态系统类型，水域生态系统质量最低。总体而言，人工生态系统质量综合评价值为46.43，显著高于自然生态系统。
