山东省南四湖湿地植被碳储量初步研究

湿地是全球重要的陆地碳库之一,对于全球变化的响应亦十分敏感。通过对南四湖湿地的野外实地调查并结合已有资料,对南四湖湿地的范围进行了重新定界,分析了湿地的植被类型和空间分布状况。通过对2006年6月份的SPOT5影像的解译,绘制了湿地景观格局图,计算了各种湿地景观类型的面积。结合公开发表的湿地植被生物量密度数据和相关参数计算出了整个南四湖湿地植被的碳储量为6.057 64×104t,并与1983年资料的折算数据对比发现南四湖湿地植被碳储量已减少了近3/4,表明南四湖湿地植被的碳汇能力已经明显减退。

PRELIMINARY STUDY IN WETLAND VEGETATION AND ITS CARBON STORAGE OF NANSIHU LAKE IN SHANDONG PROVINCE

Wetland is one of the most important carbon reservior of terrestrial ecosystem in the world,and its response to Global Change are also sensitive.Frist,based on the fieldworks in Nansihu Lake and some existing data,the range of Nansihu Lake was redefined.Conditions of wetland vegetation,including its vegetation types and distribution,was analysised in the paper.Besides,we dealt with the SPOT5 data of 2006 to make the wetland landscape pattern figure and calculate the areas of different kinds of landscape patterns.At last,we used the published data of wetland vegetation biomass density and some correlative parameters to calculate and came to a conclusion that the carbon storage of Nansihu Lake Wetland vegetation is 6.057 64×104 t,which has been nearly decreased by 3/4.The results indicated that the carbonsink function of Nansihu Lake wetland vegetation has reduced obviously.