滨海生态脆弱区土地生态系统服务价值动态变化分析——以黄骅市为例

Dynamic Change of Land Ecosystem Service Value Around Coastal Ecological Fragile Area——A Case Study of Huanghua City

以黄骅市为研究区,运用ENVI遥感技术解译出黄骅市1990年、2000年、2014年三期影像,分析研究区各生态类型的变化特征,采用生态系统服务价值评估方法对该地区生态系统服务价值进行测算并分析其变化情况。结果表明:(1)1990—2014年,黄骅市园地和建设用地面积增加,耕地、草地、水域、盐碱地和未利用地面积减少;(2)黄骅市1990年、2000年、2014年土地生态服务价值分别为418 629.47万元、415 055.68万元和411 372.07万元,土地生态系统总服务价值共减少7 257.40万元。其中,园地和建设用地的生态服务价值增加;耕地、草地、水域、盐碱地和未利用地的生态服务价值减少;(3)1990—2014年,水源涵养和废物处理服务功能价值在研究区土地生态系统服务价值构成中贡献度最大,原材料最小。此外,研究区只有原材料供给增加,其他均在减少,减少最多的是废物处理。

We took Huanghua city as the study area, used the ENVI remote sensing to interpret out 1990, 2000, 2014 three period images of Huanghua City, analyzed variation characteristics of various ecological types, used the ecosystem service value evaluation method to calculate the ecosystem service value of the region and analyze its changes. The results showed that： （1） from 1990 to 2014, garden and construction land areas increased, cultivated land, grassland, water, saline alkali land and unused land areas decreased in Huanghua City; （2） the land ecosystem service values in 1990, 2000 and 2014 of Huanghua City respective were 4 186. 294 7 million Yuan, 4 150. 556 8 million Yuan and 4 113. 720 7 million Yuan, respectively, the land ecosystem service value totally reduced 72. 574 0 million Yuan, Among them, the ecosystem service values of garden and construction land increased, the ecosystem service values of cultivated land, grassland, water, saline alkali land and unused land decreased; （3） from 1990 to 2014, contribution of water conservation and waste disposal service function value to land ecosystem service value structure was the largest, the raw material was the least. In addition, only raw material supply increased, the others decreased, and waste disposal reduced the most in the study area.