阿拉善左旗公益林植被群落动态监测研究  

Monitoring and Evaluation of Forest for Public Benefit in Alxa Left Banner

作　　者：马扎雅泰 赵晨光[1] 李慧瑛 刘俊良 Ma Zhayatai;Zhao Chenguang;Li Huiying;Liu Junliang(Inner Mongolia Alxa Forestry Research and Sand control Institute,Alxa Left Banner 750306,China)

机构地区：[1]内蒙古阿拉善盟林业治沙研究所,内蒙古阿拉善750306

出　　处：《防护林科技》2020年第3期56-59,共4页Protection Forest Science and Technology

基　　金：阿拉善盟科技计划项目:阿拉善人工种植梭梭林对生态环境影响研究(AMYY2019—09)。

摘　　要：通过对额济纳旗国家公益林进行监测与评价,结果表明:(1)额济纳旗国家级公益林胡杨和柽柳群落盖度平均增加2.69%、梭梭降低1.89%、白刺降低0.30%、沙拐枣降低0.42%。(2)胡杨、柽柳和白刺群落生物量均有不同程度的增加,生物量增加2.13 gm^-2;梭梭和沙拐枣群落生物量均有所减少。(3)额济纳旗7种主要植物群落的Margalef丰富度指数平均值为0.963,有较大幅度的增加,Shannon-Weiner多样性指数主要物种均有增加。Simpson's优势度指数沙拐枣有减小趋势,减幅均接近于0.03,其余植物群落均有增加。Pielou均匀度指数大多物种均呈增加趋势,尤以白刺增幅最大。Ejina Banner’s forest for public benefit were monitored and evaluated.Result shows that:(1)the community coverage of Populus euphratica and Tamarix in National Ejina Banner forest for public benefit increase by an average of 2.69%,Haloxy lonam mosdendron decrease by 1.89%,Nitraria decrease by 0.30%,Calligonum decrease by 0.42%.(2)Populus euphratica,Tamarix and Nitraria community biomass increase by different degrees,the average biomass increase by 4.26 kg;Haloxy lonam mosdendron and Calligonum community biomass reduceo,Haloxy lonam mosdendron reduce by 2.26 kg,Calligonum reduce by 2.77 kg.(3)Margalef richness index with the average value 0.963 of seven predominant plan communities in Ejina Banner has a larger increase;Shannon-Weiner diversity index of major species has increased,the Simpson's dominance index of plant communities increase except Calligonum,reduce close to 0.03.Pielou evenness index shows an increasing trend in most species,especially Nitraria.

关 键 词：公益林 效益评价 额济纳旗 生物量 盖度 

分 类 号：S78.54[农业科学—林学]