基于VSD模型的铁山港湾红树林生态系统脆弱性初步评价  

Preliminary assessment of Tieshangang Bay mangrove ecosystem vulnerability based on VSD model

作　　者：李小维 黄子眉[2] 陈剑锋[2] 王欣 韦江玲 LI Xiaowei;HUANG Zimei;CHEN Jianfeng;WANG Xin;WEI Jiangling(Guangxi Key Lab of Mangrove Conservation and Utilization,Guangxi Mangrove Research Center,Beihai 536000,China;Beihai Marine Environmental Monitoring Center Station,State Oceanic Administration,Beihai 536000,China;Shankou National Mangrove Ecosystem Reserve Administration of Guangxi,Beihai 536000,China)

机构地区：[1]广西红树林保护与利用重点实验室,广西红树林研究中心,广西北海536000 [2]国家海洋局北海海洋环境监测中心站,广西北海536000 [3]广西山口红树林生态自然保护区管理处,广西北海536000

出　　处：《热带海洋学报》2018年第2期47-54,共8页Journal of Tropical Oceanography

基　　金：广西红树林保护与利用重点实验室开放基金(GKLMC-201701)

摘　　要：基于脆弱性域图(vulnerability scoping diagram,VSD)评价模型,从暴露程度、敏感性、适应能力3个方面构建了红树林生态系统脆弱性评价指标体系。采用改进的综合指数法和模糊综合评价法,重新定义脆弱性分级标准,定量评价了铁山港湾红树林生态系统在1989年、2003年和2014年3个年份的脆弱性水平。结果显示,铁山港湾红树林生态系统在3个年份的脆弱性水平值分别为0.145、0.255、0.334,呈现增加趋势。首先,铁山港湾红树林生态系统面临的暴露程度不断增大,主要胁迫因子为滩涂围垦面积、废水排放量;其次,生态系统的敏感性增强,主要敏感因子是海洋生物质量综合指数、底栖生物和潮间带生物多样性指数;第三,生态系统的适应能力略有增加,总体上较弱。According to the three elements of“exposure-sensitivity-adaptive capacity,”an index system framework of mangrove ecosystem vulnerability assessment was established based on a VSD(vulnerability scoping diagram)evaluation model.Redefining the vulnerability classification criteria,improved comprehensive index method and fuzzy evaluation method were applied to quantitatively evaluate the mangrove ecosystem vulnerability of Tieshangang Bay in 1989,2003 and 2014,respectively.The results showed that the mangrove ecosystem vulnerability comprehensive evaluation index values in these three years were 0.145,0.255 and 0.334,respectively;the scores increased over the years,indicating the Tieshangang Bay ecosystem vulnerability tended to be increasingly vulnerable.First,the mangrove ecosystem exposure index of Tieshangang Bay was increasing,and the major artificial stress factors were reclamation areas and the discharge of wastewater.Second,the sensitivity of Tieshangang Bay mangrove ecosystem was obviously intense,the main sensitive factors were comprehensive index of marine life quality,biological diversity indexes of benthos and intertidal organisms.Last but not least,the adaptive capacity of the ecosystem increased slightly,but is generally weaker.

关 键 词：脆弱性 红树林 生态 评价 铁山港 

分 类 号：P735.12[天文地球—海洋生物学] S718.5[天文地球—海洋科学]