福建省沿海县(市)生态环境现状综合评价

Comprehensive Evaluation on the Eco-environment at Present of Counties and Cities in Fujian Coastal Areas

以福建省沿海各个县(市、区)为研究单元,采用生物丰度、植被覆盖、水网密度、土地退化和环境质量5个指数对研究区的生态环境状况进行了综合评价与系统分析。结果表明,生态环境状况为优的单元主要集中分布于北段区域,生态环境状况为一般的单元集中分布于中段偏南区域,而生态环境状况为良的单元分布较广,但在中段偏北区域分布比较集中。生态环境综合指数(EI)与植被覆盖指数、生物丰度指数及环境质量指数均呈极显著正相关(P<0.01),与土地退化指数呈显著负相关(P<0.05),而与水网密度指数无显著相关性(P>0.05);EI与指标层的相关性说明林地面积能为EI提供正能量,而城镇化和工业化带来的SO2排放量、COD排放量、工业固体废弃物和人口密度的加大为EI提供负能量。

Taking the areas near the sea of Fujian province as research units,5 indexes include biological density,vegetation coverage,water density,land deterioration and environmental quality were choose to estimate and analyze the eco-environment of the study area. The results showed that superior-environment units were mostly located in the northern region; inferior-en- vironment units were located in the central south while averaged-environment units were widely distributed,mostly in the cen- tral north. The comprehensive environmental index（E/） was highly significantly positive correlated with vegetation coverage,bi- ological density,and environmental quality （P〈0.01）,and was significantly negative correlated with land deterioration （P〉0.05）, but was not significantly correlated with water density （P〉0.05）. The correlation between E1 and the indexes showed that woods area was positive correlated with El,while emissions of SO2 and COD,industrial waste and the increase of population, accompanied with urbanization and industrialization,was positive correlated with El.