基于第一次地理国情普查数据的厦门市生态环境评估

Evaluation on Eco-Environment of Xiamen Based on the First National Geography Census Data

基于第一次地理国情普查数据和"全国生态环境十年变化(2000—2010年)遥感调查与评估项目"的生态评价指标体系,从生态系统格局、生态系统质量、生态系统功能和生态系统胁迫这四个方面对厦门市进行生态评估,建立生态评价指标体系。结果表明:1)厦门市森林生态系统占最大比重,建筑用地从东南沿海地区向西北内陆地区逐渐递减。2)全市林地和园地的相对生物量密度、叶面积指数为较高水平;而草地覆盖度大多为中低水平;耕地的年均净初级生产力较高。3)厦门市土壤保持、水文调节等功能总体处于较低水平,等级高的区域主要集中在西北地区,其他区域较低。厦门市食物供给以同安和翔安区为主。4)厦门市岛内两区(湖里区、思明区)人类活动胁迫相对其他各区较为严重,这和岛内两区人口密度、交通网密度、GDP等较大有一定的联系。

Based on the first national geography census and “National ecological environment in the decade changes （2000—2010） remote sensing investigation and assessment project” of ecological e-valuation index system, from the ecological system pattern, ecosystem quality, ecosystem function and ecological system stress, Xiamen ecological evaluation index system was established. The results showed that：1） forest ecosystem of Xiamen city accounted for the largest proportion, and the area of construction land decreased from southeast to northwest;2） The relative biomass density, leaf area in-dex of forests and gardens are at a higher level, while the grassland coverage is mostly at low level;3） The soil conservation, hydrological regulation and other functions of Xiamen is at low level, the area with high level is mainly concentrated in the northwest, other regions is relatively low. The food supply of Xiamen came from Tong′an and Xiang′an district. 4） Xiamen′s Island District human activity stress compared to other districts is more serious, which are due to its population density, traffic network density and GDP.