摘要
以南海永兴岛、石岛和礁坪共同构成的珊瑚岛礁为研究对象,以2005、2012年两期遥感影像为基础数据,综合运用生态学原理和"3S"技术,结合现场调查,对生境格局动态和主要驱动因子进行分析。结果表明:永兴岛珊瑚岛礁生境格局动态可分为"退化"、"稳定"、"波动"和"恢复"四大类型。生境退化区大部分连续分布于西北和东北海岸线,少部分零散分布于内部居民区和道路附近;生境恢复区多零散分布于离海洋较远的区域;生境波动区主要分布于岛屿海岸线、自然林地边缘和人为干扰较多的区域;生境稳定区分布于岛礁的大部分区域。永兴岛珊瑚岛礁生境整体上处于退化趋势,人为干扰是导致生境格局改变的主要驱动因子。
In order to analysis the pattern and dynamic of habitats and the main driving forces, we take Yongxing Island, South China Sea as the research object by ecology principle and "3S" technology ,combined with the remote sensing data and field investigations. As indicated in this paper,pattern and dynamic of habitats of coral reefs can be divided into four categories as "degradation"," restoration" ," fluctuation" and "stabihzation" in Yongxing Island. The degradation of habitats occurred in the northwest and northeast island densely, or near residential land and reads faintly; the restoration of habitats occurred far away from the coastline; the fluctuation of habitats occurred along the coastline, or along the edge of natural woodland, or in some place with strong human disturbance; the stabilization of habitats occurred in majority area of the island. The habitats of coral reefs degraded on the whole in Yongxin Island, and human disturbance is the primary cause.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2013年第5期746-751,共6页
Marine Environmental Science
基金
上海市重大科技攻关项目(11dz1211402)
关键词
珊瑚岛礁
生境格局动态
永兴岛
南海
coral reef
pattern and dynamic of habitats
Yongxing Island
South China Sea