Abstract:

In order to achieve pollution prevention and comprehensive utilization of Eichhornia crassipes Sloms-laub from different levels eutrophic waters in Huixian Karst Wet lands of typical tourist area at Guilin City. The paper adopted the method of spatial sequence instead of time successional sequence, nutrient chemical components in Eichhornia crassipes Sloms-laub were determined. The order of different nutrient chemical components including TOC, EE, lignin, cellulose, hemicellulose, carbohydrate, organs of height, root length, proportions of root in total weight, Ca, Mg, Na, Mn, Zn and Fe in Eichhornia crassipes Sloms-laub was: light eutrophication area>Medium eutrophication area>Severe eutrophication area. On the contrary, there were more nutrient elements of TN, TP, TK, CP, Ash, proportions of stem, leaf in total weight, Cu, Cr, Pb, As, Hg at severe eutrophication area than light eutrophication area. It has different nutrient chemical component at different growing environment. There was obviously correlation between height, root length and concentration of nitrogen and phosphorus in water of Huixian Karst Wet lands. Eichhornia crassipes Sloms-laub could absorb a large amount of nitrogen, phosphorus, potassium compound and have certain purification function.