摘要
从生态环境状况和生态安全2个方面对张家港市生态环境进行评价和研究,计算了生物丰度指数、植被覆盖指数、水网密度指数、土地退化指数、污染负荷指数等5个指标,计权确定该市生态环境质量指数为48.7,评价等级为一般;同时选择了资源安全评价、环境安全评价、生物安全评价和灾害安全评价等4个要素,确定该市生态系统安全指数为0.44。
This study assessed ecological environment in Zhang Jiagang in two aspects as ecological environmental status and ecological security. Five indexes （biology plentiful degree, vegetation revetment, water net density, soil degradation and pollute burthen） were counted to confirm ecological quality index with a value of 48.7, and assess grade as common; meanwhile, Four factors （resource, environment, biological security, and disasters） were chosen to calculate the ecological security index with a value of 0.44.
关键词
生态
生态环境
生态安全
评价
Ecology
Ecological Environment
Ecological Security
Assessment
