Using the method of trophic state-composite index ( TSI-CI ) and the 12 months of monitoring data in 2010, we carry out initial exploration of the status of ecosystem health in Wuli Lake. First, we select four indicators, Chla, SD, TP and TN, to conduct trophic state assessment using weighted...

This article analyzes the nature and characteristics of the financial security of the enterprise as an economic category, given the author's vision of certain categories of financial security company, consider the classification of financial security company.