%0 Journal Article
%T The fractal character of lake shoreline and its ecological implica-(tion)<br>湖泊岸线分形特征及其生态学意义
%A PAN Wenbin
%A LI Daofeng
%A TANG Tao
%A CAI Qinghua
%A <br>潘文斌
%A 黎道丰
%A 唐涛
%A 蔡庆华
%J 生态学报
%D 2003
%I 
%X Based on the two physical properties lake perimeter and area, Baoan Lake and 30 other lakes in the Jianghan plain were studied, applying the shoreline development index (SDI), the box-dimension, the equation for shoreline length-area and it's transform. The shoreline box-dimension (SBD) was applied to each lake, while equation for shoreline perimeter-area (SPA_N) and its transform (SPA_T) treated 31 lakes altogether. We also used Korcak's Law to all the lakes in Hubei Province. The results showed that the average of SDI of the 31 selected lakes was 4.50, with a standard deviation of 2.088; the Shangjin Lake had the highest SDI of 11.33, and the Wangmu Lake had the smallest SDI of 1.68. The average of SBD of the 31 lakes was 1.219, with a standard deviation of 0.078; the Shangjin Lake had the highest SBD of 1.419, and the Dachang Lake had the smallest SBD of 1.096. By using the equation of perimeter-area (ln P=c blnA,and SPA_N=2b) and its transform (lnA=c blnP,and SPA_T=2/b), the 31 lakes had a SPA_N of 1.3998 and a SPA_T of 1.6956 with equations regression coefficients (R~2) higher than 0.80. This indicates that the shoreline of these lakes exhibited a self-similarity. The value of SPA_N was close to the mean of SBD of 31 lakes (1.219), and it can be used to forecast how the shoreline length varies according to the changes of lake area. Based on Korcak's Law and the area distribution of lakes in Hubei Province, the integrated fractal dimension of area distribution for lakes was 1.52, which showed that the lakes in Hubei Province had a higher self-similarity and more complex shorelines during the 1980s. By a stepwise regression analysis between macrophyte biomass in some lakes of Hubei Province and four morphological indexes (SDI, SBD, Area, Perimeter), we found that SDI and SBD are the influencing factors of the biomass. The result showed that the higher the shoreline complexity of a lake is, the higher the SBD of a lake gets. In order to protect the biodiversity of lake ecosystems, it is essential to keep the shoreline in a natural status.
%K fractal
%K lake shoreline
%K macrophytes
%K biomass<br>分形特征
%K 湖泊岸线
%K 大型水生植物
%K 生物量
%K 生态学
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=705F1A5FE107224C&yid=D43C4A19B2EE3C0A&vid=EA389574707BDED3&iid=59906B3B2830C2C5&sid=4632F66201B6AB53&eid=011F1533B0A7A0B2&journal_id=1000-0933&journal_name=生态学报&referenced_num=8&reference_num=40