Natural wetland ecosystems provide significant benefit to human bein g. The distance between human being and nature can be shortened through wetland ′s ecological restoration in ecological tourism. Keep wetland ecosystem integri ty, fully using original plant and the water edge environmental planning are key compon-ents in natural wetland design.
The species diversity of weeds community of vegetable ecosystem is high in Xiangtan suburb fallow during winter season. Based on the total of the plots ,18 species which belong in 10 family, 15 genus were found. The result of diversity index is: the richness index is 9-15; the Simpson index is 0 6401-0 7451; the Shannon-Wiener index is 1 4852-1 7000; the evenness index is 0 5791-0 7145.The results show that the farther the vegetable plot is from city, the higher the species diversity is.
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