摘要
海岛是陆地生态和海洋生态的汇合,海岛县是海陆生态空间复合系统。文章基于归一化植被指数(NDVI),运用生态系统服务价值(ESV)系数法,分析了1990—2018年中国12个海岛县植被动态和生态系统服务价值的变化。结果表明:1990—2018年,中国12个海岛县的平均NDVI在0.347~0.380之间,整体上呈下降趋势;生态系统服务价值总额从1990年的8.27亿美元下降到2018年的8.21亿美元,呈现区域差异性。长海县、长岛县、崇明区、平潭县、岱山县、洞头区、嵊泗县和东山县8个海岛县的NDVI呈下降趋势,玉环市、定海区、普陀区和南澳县4个海岛县的NDVI呈增长状态;长海县、长岛县、平潭县、岱山县、东山县、洞头区和普陀区7个海岛县的ESV呈下降趋势,南澳县、定海区、玉环市、崇明区和嵊泗县5个海岛县的ESV呈增长状态。
Island is a combination of terrestrial ecology and marine ecology, and island county is a space composite system of terrestrial ecology and marine ecology. This paper analyzes the changes of vegetation dynamics and ecosystem service value in 12 island counties of China from 1990 to 2018 by using the normalized difference vegetation index(NDVI) and the ecosystem service value(ESV) coefficient method. According to the research results,the average NDVI of China’s 12 island counties was between 0.347 and 0.380,showing a downward trend on the whole,and the total ESV declined from USD 827 million to USD 821 million,showing regional difference in the period from 1990 to 2018. In the period above, the NDVI of eight island counties, including Changhai County, Changdao County, Chongming District,Pingtan County,Daishan County,Dongtou County,Shengsi County and Dongshan County,shows a downward trend while that of four island counties,including Yuhuan City,Dinghai District,Putuo District and Nanao County,was on the rise. The ESV of seven island counties,including Changhai County,Changdao County,Pingtan County,Daishan County,Dongshan County,Dongtou District and Putuo District showed a downward trend while that of five island counties,including Nanao County,Dinghai District,Yuhuan City,Chongming District and Shengsi County,was on the rise. The study on the temporal and spatial variations of NDVI and ESV in China’s island counties will provide scientific reference for the modernization of China’s island governance system and capacity.
作者
崔旺来
奚恒辉
蔡莉
陈梦圆
徐成磊
CUI Wanglai;XI Henghui;CAI Li;CHEN Mengyuan;XU Chenglei(School of Economics and Management,Zhejiang Ocean University,Zhoushan 316022,Zhejiang,China;Marine Science and Technology College,Zhejiang Ocean University,Zhoushan 316022,Zhejiang,China;School of International Affairs and Public Administration,Ocean University of China,Qingdao 266100,Shandong,China)
出处
《经济地理》
CSSCI
CSCD
北大核心
2021年第9期184-192,224,共10页
Economic Geography
基金
国家社会科学基金项目(20BZZ063)
教育部人文社会科学规划基金项目(19YJA810018)。
