The Research On Wild Herbaceous Plants Diversity And Seasonal Landscape Changes In Poyang Lake National Wetland Park

This paper takes the wild herbaceous ground covers of Poyang Lake NationalWetland Park for an object of the study, all the year2013as the investigate time, once amouth as the investigate frequency, all the Poyang Lake National Wetland Park greenyardas the investigate space, and a basis of rich ground covers as a plot, there are1100researchplots in the spring, summer and autumn. Overall that,taking a typical plot for examplefirstly, the rational application of the wild herbaceous is analysised by investigation anddrawing the graphic icon of the seasonal changes, using TWINSPAN to demarcate thecommunity of the wild herbaceous ground, analysising and studying the habitatcharacteristics of main ass from the seasonal landscape changes and structures of thecommunity; secondly,taking some rational suggestions to the existed problems in theapplications of the wild herbaceous ground in Poyang Lake National Wetland Park andsumming up several moods that suit the wetland park.Studies indicated that all of Poyang Lake National Wetland Park wild herbaceous plantsare210species, belonging to54families,155genus. There are three biggest families whichare the grass family?the composite family?sedge family. Besides, there are121genuswhich include one species,78.06%of total genus. The spring wild herbaceous plants are50families,107genus,142species. Among them ferns are2families,2genus,3species,2.11%of total species; monocotyledons are8families,17genus,20species,accounting for14.08%;dicotyledonous plants are44families,88genus,120species, about84.50%of totalspecies. The summer wild herbaceous plants are41families,107genus,154species, theferns are4families,4genus,5species,3.24%of total species; monocotyledons are8families,33genus,39species,accounting for25.32%;dicotyledonous plants are35families,73genus,110species, about71.42%of total species. The grass family plants are15.67%amount of all the summer species. the composite family and sedge family plantsare14.59%and8.75%. The autumn wild herbaceous plants are37families,100genus,120species, monocotyledons are5families,27genus,30species,25%of total species;dicotyledonous plants are30families,72genus,85species, about70.83%of total species.The grass family? the composite family and sedge family plants are6.66%,17.50%and15.83%of all autumn species.2.The floras of the wild herbaceous species in Poyang Lake National Wetland Parkare composed complicatedly, including all15classes species distribution.In addition to thecosmopolitan, the largest two categories are pan tropical and north temperate; furthermore,in the floras species composition, there are17genera,19species tropical;47genera,58species temperate. 3.Using the Margarlef index?Shannon-Wiener and Simpson index?Pielou index tochonstruct a comprehensive index system, and use this index system to analysis andevaluat the wild herbaceous diversity under different seasons and and differentenvironments in Poyang Lake National Wetland Park.4.Summarizing the characteristics of the wild herbaceous group bundle in differentseason to provid the application mode from the view of ecological constitude in spring?summer and autumn by using TWINSPAN.5.Summarizing the different season wild herbaceous group bundle characteristics inPoyang Lake National Wetland Park from statisticsing the changes of the flowers colour ofwild herbaceous. Besides, bringing up some problems in park greening conditions,summarizing the corresponding suggestions ang solutions. At last,summing up theapplication modes of landscape construction which is suit for Poyang Lake NationalWetland Park. Under the different circumstances.