摘要
以相邻斑块间公共边界为基础,构建了边界邻接指数,该指数可以在斑块水平和类型水平上测度景观的边界邻接性。首先给出3个前提条件:1)景观是由不同类型的斑块镶嵌而成;2)某一斑块和周围与其相邻接的若干异质斑块的公共边界分别占该斑块边界总长度的比例不尽相同,比例越大的邻接斑块其邻接性就越大;3)某个类型的斑块对另一类型斑块的边界邻接性和另一类型的斑块对该类型斑块的边界邻接性分别代表不同的意义。然后给出景观水平和类型水平上的边界邻接指数。以增城市2009年土地利用现状为例,分别计算在斑块水平和类型水平上的边界邻接指数。研究表明,边界邻接指数能够在斑块水平和类型水平上对景观相邻关系进行测度,但是边界邻接指数的生态学意义和机理还有待进一步研究。
The landscape adjacency is an important feature of landscape structure. An index named boundary adjacency index （BAD was put forward in this paper based on the common boundary of patches. The index can be used to measure the landscape boundary adjacency characteristic at patch level and class level. To construct BAI three preconditions were given.. 1） landscapes consist of mosaic patches; 2） to a certain patch, the values of the BAI of others patches respectively adjacent to it are not neces- sarily equal and the larger value indicates the closer spatial relation to it, and it is the same at class level;3） the BAI of the other patch to the patch and the BAI of the patch to the other one is not the same one. And then the boundary adjacency indexes at patch level and class level were ：~tructured. With the land use of Zengcheng City in 2009 as a case, the BAI was applied at patch level and class level. Research shows that BAI can be used to measure the adjacency relation of landscape at patch level and class level. Further research is needed on the ecology significance of BAI and the mechanism of spatial adjacency of landscape.
出处
《地理与地理信息科学》
CSCD
北大核心
2013年第1期60-63,95,共5页
Geography and Geo-Information Science
基金
国家自然科学基金项目(40771003)
广东省普通高校人文社会科学省市共建重点研究基地嘉应学院客家研究院招标课题(12KYKT06)
关键词
景观结构
景观指数
边界邻接指数
斑块水平
类型水平
landscape structure, landscape index~ boundary adjacency index~ patch level
class level
