我国若干湖泊水库的营养状态指数TSI_c及其与各参数的关系

TROPHIC STATE INDEX AND ITS CORRELATION WITH LAKE PARAMETERS

基于我国20多个湖泊水库的不同营养状态特征,首次得出了适用于我国若干湖泊的营养状态指数TSI_o及其与各参数的关系.通过对这些湖泊的TSI_o与TSI_m值比较,指出TSI_o比TSI_m更适合于描述生物量与营养盐呈线性响应的我国这类湖泊的营养状态.此外还提出用相关加权法综合不同参数的营养状态指数,并用一个“综合”状态式来表示湖泊的营养状态.

Based on various trophic state characters of 24 lakes in China, the trophic state indexes(TSIc)and its correlations with lake parameters are presented. Comparison between TSIC and TSIm of the lakes shows that in order to describe the trophic states of these lakes,TSIc is more suitable than TSIm for the linear response between biomass and trophic salt in lake water. A comprehensiv6 trophic state index weighted upon correlation relationship of various parameters is also suggested. The trophic state can then be described with a comprehensive state form.