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气候变化背景下海南东寨港红树林生态系统的脆弱性评估
颜秀花,蔡榕硕,郭海峡,许炜宏,谭红建
0
(自然资源部第三海洋研究所,福建 厦门 361005)
摘要:
鉴于红树林生态系统对气候变化背景下海平面上升和极端台风事件有高度敏感性,应用1980—2018年的海洋大气观测资料和实地调查数据,分析了海口东寨港地区的海平面、温度和台风最大风速的变化特征,并基于IPCC气候变化综合风险的理论框架,构建了“暴露度-敏感性-适应性”的脆弱性评价指标体系和估算方法,评估了海平面上升和台风事件背景下东寨港红树林生态系统的脆弱性主要特征。结果显示:① 东寨港红树林生态系统的致灾影响因子主要为该地区沿海海平面的快速上升,其上升速率可达4.6 mm/a,远高于全球和中国沿海平均值;其次为1993年之前和2006年之后,在海口地区250 km范围内出现的热带气旋或台风事件;② 东寨港红树林脆弱性指数的平均值为0.31,属于中度脆弱等级,其中三江片区的红树林脆弱性相对最高,演丰片区最低。构建的评价指标体系可较好地反映出海平面快速上升和热带气旋或台风影响下红树林生态系统的脆弱性特征。
关键词:  海洋生物学  脆弱性  评价指标体系  海平面上升  台风  红树林  东寨港
DOI:
基金项目:国家重点研发计划“全球变化及应对”专项资助项目(2017YFA0604903,2017YFA0604902);国家社科基金重大资助项目(17ZDA172);自然资源部第三海洋研究所基本科研业务费专项资金资助项目(海三科2017030)
Vulnerability of Hainan Dongzhaigang mangrove ecosystem to the climate change
YAN Xiu-hua,CAI Rong-shuo,GUO Hai-xia,XU Wei-hong,TAN Hong-jian
(Third Institute of Oceanography, MNR, Xiamen 361005, China)
Abstract:
The variation characteristics of sealevel, temperature and maximum typhoon wind speed in Hainan Dongzhaigang area were analyzed because of the high sensitivity of mangrove ecosystem to sealevel rise and extreme typhoon events in the context of climate change and used oceanatmosphere observation data and field survey data from 1980 to 2018. Based on the conceptual framework of climate change risk of IPCC, an “exposuresensitivityadaptation” indicator system for vulnerability assessment was constructed and the vulnerability characteristics of Dongzhaigang mangroves under events of sealevel rise and typhoon landing are assessed. The results show that firstly, the important hazard to Dongzhaigang mangrove ecosystem is the rapid rise of sealevel and the rising rate of 4.6 mm/a is much higher than those of global and China coastal areas. The second impact factor is tropical cyclones or typhoons occurred within 250 km of Haikou area before 1993 and after 2006. Secondly, the average value of the mangrove vulnerability index in Dongzhaigang area is 0.31, which is a medium vulnerability level. The mangrove vulnerability is the highest in Sanjiang area and the lowest in Yanfeng area. The vulnerability index system constructed by this paper can reflect better for the vulnerability characteristics of mangrove ecosystem under the influence of rapid sea level rise and tropical cyclone or typhoon.
Key words:  marine biology  vulnerability  indicator system  sea level rise  typhoon  mangrove  Dongzhaigang

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