摘要
以福建兴化湾为例,选用1959年海图、1986年和2000年遥感影像数据及围填海相关规划等为基本信息源,将研究区划分为农田、养殖池、盐田、草林地、裸地、岛屿及滩涂7种生态系统类型。采用GIS技术分析兴化湾不同时期由于围填海所造成的各生态系统类型面积变化,并借鉴Costanza等研究的生态服务功能单位价值系数,评估围填海对滩涂湿地生态服务造成的累积影响。在1959—2000年,兴化湾滩涂面积减少了21.35%,生态服务的年总价值由1959年的5.31×109元降至2000年的4.45×109元,损失达8.63×109元,损失幅度为16.35%;2000—2020年,围填海相关规划的实施将导致兴化湾滩涂面积急剧下降,生态服务的年总价值由2000年的4.45×109元降至2020年的3.48×109元,损失达9.68×108元,损失幅度为21.77%,其损失量和损失幅度均高于1959—2000年40余年的损失。
The study area was classified into seven landscape categories： cropland, aquaculture pond, saltern, grass and forest, uncovered land, island, and tidal flat. Based on GIS -tech, the changes of ecosystem area between 1959 and 2000 were estimated by using the remote sensing data and chart, and prospective ecosystem distribution was predicted with the data of issued planning. Then the values of ecosystem services in different periods were calculated by reference of published studies. The area of tidal flat declined by 21.35 % between 1959 and 2000, and the total value of ecosystem services in the tidal flat wetland declined by 16.35 % from 5.31×10^9 yuan to 4.45×10^9 yuan per year during the same time. If the reclamation plannings are implemented, the area of tidal flat will decline greatly by 24.43 %. Meanwhile, the total value of ecosystem services in the tidal flat wetland will be 3.48×10^9 yuan per year, which is only 65.52 % of the amount in 1959. Reclamation causes the shift of tidal flat with high ecosystem value to other ecosystems with low ecosystem value, and the loss of tidal flat is the major reason for the decrease of ecosystem service value in the tidal flat wetland in the Xinghua Bay.
出处
《海洋通报》
CAS
CSCD
北大核心
2008年第1期88-94,共7页
Marine Science Bulletin
基金
国家908专项资助项目(908-02-04-01)
国家908专项资助项目(908-02-04-08)
关键词
围填海
生态服务
滩涂湿地
累积影响
兴化湾
reclamation
ecosystem services
littoral wetland
cumulative effects
Xinghua bay
