|Table of Contents|

Assessment of Urban Wetland Ecological Security at Differing Scales(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2011年01期
Page:
119-124
Research Field:
地理学
Publishing date:

Info

Title:
Assessment of Urban Wetland Ecological Security at Differing Scales
Author(s):
Hao Jingfeng; Liu Hongyu; Hu Hebing; An Jing
Jiangsu Key Lab of Environment Change and Ecology Construction,School of Geography Science,Nanjing Normal University,Nanjing 210046,China
Keywords:
urban wetland;  ecosystem secur ity;  func tiona l area;  differing scales;  Nan jing C ity
PACS:
X826
DOI:
-
Abstract:
Assessm ent o f we tland ecolog ica l secur ity is no t on ly conce rned w ith its eco system hea lth, but shou ld be pa id m ore a tten tion on the prob lem s abou t the sustainable deve lopm ent o f the ecosystem itse l.f The factors that a ffect thew et?? land eco log ica l security are diversity and comp licated, and w e assessed the sm all lake w etland in the urbaniza tion a reas at three differing scales: ecosystem sca le, catchm en t sca le and function sca le. Results showed that: ①The ecolog ica l security indexes of urban sha llow pond w etland were good, from 0?? 70 to 0?? 98;② Quarter ly variation of the d ifferent we tlands w as sign ificantly ( P≦0.01). The va lue o f the ecosystem security w as higher in spring and w inte r but it de?? c lined in summ er and au tum n.③ D iffe rent function a reas of the w etland ecosystem security w ere d istingu ishing. The function o f the bus iness and serv ices land and the educational land w ere sim ila r, and the ir index es were 0.77 and 0.76 respective ly, wh ile the indexes o f the cu ltivated land w ere h igher ( 0.93). Quarter ly var ia tions of the diffe ring functions were distingu ish ing am ong th ree func tion a reas. The indexes in business and serv ices land and the educa tiona l land de?? c lined in summ er and then increased from au tum n to w in ter bu t it just went higher in summ er while w ere steady in other three seasons in the cu ltiva ted land.

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Last Update: 2013-04-11