摘要
基于南沙群岛珊瑚环礁发育指数为多指标的观点，将测度出的多项相关因子的遥感复合信息数据，细分作Ｎ１，Ｎ２，…，Ｎ１０个地理事件，进行了环礁信息熵分析．表征了烟值大小与干出环礁发育指数密切相关的因子，它们依次为礁顶面积（０．３１９）、渴湖面积（０．３２４）、环礁开放度（０．３３６）、走向（０．５５１）等．就此，对干出环礁发育指数提出一个新的表达式，用以划分南沙环礁发育的开放性类型．
ぉn the viewpoint that the coral reef atolls' growth index of the Nansha Islands is innuenced by many factors, the measured remote sensing comopite information including some mutually related factors is divided into 10 geographic events as N1, N2, N10, and the analysis of the atolls' information entropy is made. From the value of the entropy, the closed related factors with the index of the emerged atolls are shown. In proper order, the factors are reef top's area (0. 319), lagoon's area (0. 324), open-degree of atoll (0. 336), trend of atoll (0. 551 ). On the basis Of this work, a new description function of the emerged atoll gIOwth index is proceed. This function can be used to identify the open type of Nansha atoll gtowth.
出处
《海洋学报》
CAS
CSCD
北大核心
2000年第1期43-51,共9页
基金
国家自然科学基金!49571054
关键词
南沙群岛
遥感信息
信息熵
环礁类型
珊瑚礁
Nansha Islands, remote sensing information, information entropy, growth index, atoll's types
