区域土地利用与生态系统服务价值变化研究--以广东省湛江市为例

On Changes of Regional Land Use and Ecosystem Services Value——A Case Study of Zhanjiang City,Guangdong Province

利用1996—2004年湛江市土地利用变更数据,在研究土地利用变化的基础上,从时空角度分析生态系统服务价值(ESV)变化。研究结果表明:①1996—2004年,湛江市耕地、林地、牧草地面积在减少,其中耕地减少最多,减少了11954.1hm2;园地、居民点及工矿用地、交通用地、未利用土地面积在增加,其中居民点及工矿用地增加最多,增加了7696.4hm2。②1996—2004年,湛江市总ESV在缓慢减少,减少了0.57亿元,变化率-0.44%;湛江市生态系统单项服务功能价值(ESVf)变化的总体趋势是:气体调节、气候调节、土壤形成与保护、生物多样性保护、食物生产、原材料在减少,水源涵养、废物处理、娱乐文化在增加;不管是整体生态系统服务功能,还是单项服务功能,湛江市各县区都在减弱。

This paper analyzed the spatial-temporal changes of ecosystem services value （ESV） based on the data of land use from 1996 to 2004 in Zhanjiang City. The results showed： （1） the areas of cultivated land, forest land and grass land decreased, while those of garden land, residential area, industrial and mineral land, traffic land and unutilized land increased; the area of cultivated land decreased most by 11954.1 hm^2, and the area of residential area, industrial and mineral land increased most by 7696,4 hm^2. （2） the total ESV decreased by ￥0.5716 billion, and the rate of change was -0.44%; the value of single ecosystem services function（ESVf） of gas regulation, climate regulation, soil formation, bio-diversity conservation, food production and raw materials decreased, while those of water conservation, waste treatment and recreation increased; not only the whole function but also each function of ecosystem services weakened in all the districts of Zhanjiang City.