海州湾生态系统健康诊断

Health Diagnosis of Haizhou Bay Neritic Ecosystem

根据开敞海湾浅海生态系统特征,构建了包含环境现状、环境风险、环境背景、系统结构功能和系统稳定性5类诊断指标以及24个诊断因子的浅海生态系统健康诊断指标体系,并采用层次分析法对海州湾浅海生态系统2009年12月和2010年11月的健康状况进行诊断。结果表明,2009年12月和2010年11月海州湾浅海生态系统的综合健康指数值分别为0.500～0.689和0.553～0.750,浅海生态系统处于亚健康～较健康状态,近岸海域基本处于亚健康状态,离岸海域基本处于较健康状态,近岸海域生态系统健康水平低于离岸海域,这与近岸海域开发活动干扰多以及环境压力大有关。

In light of the characteristics of an open bay neritic ecosystem, a neritic ecosystem health diagnosis index system was established consisting of five categories of diagnosis indices and 24 diagnostic factors. The diagnosis indices are environment status quo, environmental risk, environment background, ecosystem structure and function, and ecosystem stability. Health of the neritic ecosystem of Haizhou Bay in December 2009 and in November 2010 was primarily diag- nosed. Results show that the neritic ecosystem health diagnosis index system is workable, and the integrated health index value of the neritic ecosystem of Haizhou Bay was in the range of 0. 500 - 0. 689 in December 2009, and of 0. 553 - 0. 750 in November 2010, indicating that the neritic ecosystem was in a sub-healthy to fairly healthy condition, and the off-shore area was better than the immediately offshore area in health condition, which was supposedly related to the interference and environmental pressure caused by the exploitation of the offshore area.