%0 Journal Article
%T Effect of Wetland Landscape Pattern on Nutrient Reduction in the Liaohe Delta<br>辽河三角洲湿地景观格局对养分去除功能影响的模拟
%A LI Xiu zhen
%A XIAO Du ning
%A HU Yuan man
%A WANG Xian li
%A <br>李秀珍
%A 肖笃宁
%J 地理学报
%D 2001
%I 
%X The effect of spatial pattern on the nutrient reduction is investigated based on the spatial simulation model designed for the estuary wetland of Liaohe Delta. Four scenarios are designed to test the effect of different landscape patterns on the nutrient reduction in the reed marsh: canal density, reed area size, reed area shrinking pattern, and pumping station position. According to the simulation result, each factor brings less than 10% change in the total nutrient reduction rate. More canals will not help much to improve nutrient reduction. Smaller areas are more efficient than larger ones. The shrinkage pattern is better than other shrinking patterns in keeping a higher nutrient reduction rate. It is also more efficient to keep the pumping station near the border of the area to be irrigated. These conclusions provide theoretical supports to strategy makers for local land use planning, and contribute to the understanding of the relationship between landscape patterns and functions.
%K pattern effect
%K nutrient reduction
%K wetland<br>格局效应
%K 养分去除
%K 湿地
%K 景观格局
%K 生态环境
%K 灌渠密度
%K 辽河三角洲
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=869B153A4C6B5B85&jid=F7B5B947C24B9D649491012214E4BEF4&aid=761A5FDD9DA038B9&yid=14E7EF987E4155E6&vid=014B591DF029732F&iid=CA4FD0336C81A37A&sid=9971A5E270697F23&eid=BE33CC7147FEFCA4&journal_id=0375-5444&journal_name=地理学报&referenced_num=27&reference_num=22