西气东输工程江西段沿线植物群落物种多样性及生物量特征

采用遥感图解译、样地调查与定性描述相结合的方法,对西气东输工程江西段沿线植物群落进行了分类,并对主要群落生物多样性、生物量等基本特征进行测量与分析。结果表明：①天然植被主要有4个植被型组14个群系,人工群落有6个植被型组17个群系;②群落间物种多样性变异较大,枫香群落最高,草丛群落最低。同时还表现出天然林群落比人工林群落高的特点;③不同群落间的生物量差异也较明显,杉木林最大为110.15 t/hm（2单位下同）,其次是马尾松人工林（97.28）、马尾松天然林（81.01）、枫香林（70.23）、木荷林（64.05）、毛竹林（64.00）、湿地松林（63.21）、苦槠林（32.00）、灌丛（5.15）、油茶林（3.57）,最小的是草丛群落,仅为0.45t/hm2。

Biodiversity and Biomass Characteristics of Vegetations along West-to-East Gas Pipeline Project in Jiangxi

Based on Remote Sensing Image Interpreting,sampling and analysis,the biodiversity and biomass of vegetations alongside West-to-East Gas Pipeline Project,Jiangxi were studied by using richness indices,species diversity indices and evenness indices,respectively.The results indicated that： ①the natural vegetations were grouped into 4 vegetation type groups（VTG）,14 Foramtions;the artificials could be catetigoried into 6 VTGs,17 Foramtions;②the differences among biodiversity of coummunities were significant, Liquidambar formosana had the highest biodivesity and the herbal communities were the lowest. Meanwhile, natural communities were higher than the axtifical in biodiversity; （,~ the differences among biodiversity of different coummunities were significant, Cunninghamia lanceolata plantation had the highest biomass, 110.15 t/hm2, followed by the Pinus massoniama plantation（97.28）, Form. Pinus massoniama natural forest （81.01）, Form. Liquidambarformosana （70.23）, Form. Schima superba （64.05）, Form. Phyllostachys edulis （64.00）, Form. Pinus elliottii （63.21）, Form. Castanopsis selerophylla （32.00）, shrub （5.15）, Form. Camellia oleifera （3.57）, and herbal coummunities were the lowest, only 0.45 t/hm2.