不同人工灌木与草混播群落中4种灌木根系分布的研究  

Study on Root Distribution of Four Species of Shrub in Artificial Shrub and Grass Mixture Communities

作　　者：赵思金[1] 韩烈保[1] 宋桂龙[1] 张咏新[2] 张才厚 

机构地区：[1]北京林业大学草坪研究所,北京100083 [2]辽宁农业职业技术学院,辽宁营口115009 [3]抚顺矿业集团责任有限公司林业处,辽宁抚顺113004

出　　处：《西北植物学报》2008年第4期799-804,共6页Acta Botanica Boreali-Occidentalia Sinica

基　　金：教育部新世纪优秀人才支持计划;国家“十一五”科技支撑计划(2006BAD01A19);863计划(2006AA10Z132)

摘　　要：通过对3种人工群落中4种优良水土保持灌木荆条、柠条、胡枝子、紫穗槐的根系分布的研究,分析和探讨这4种灌木在不同群落中根系生物量分布,地上、地下生物量相关性及有效根密度的差异.结果表明:(1)紫穗槐在不同人工群落中的地下生物量相对稳定;(2)群落Ⅰ(胡枝子80/柠条80+紫穗槐30/荆条20+苇状羊茅150/百脉根100)的植物配置灌木根系生物量最大;(3)4种灌木地上、地下生物量有较强的相关性,地上生物量均随地下生物量的增加而提高;群落Ⅰ有效根密度总和远大于群落Ⅱ、Ⅲ.可见,紫穗槐具有良好的混播性能,群落Ⅰ的植物配置模式相对合理.We analyze and explore the different distribution of the root system of soil conservation shrubs Vitex negundo var. heterophylla Rehd. ,Caragana korshinskii Kom. ,Lespedeza bicolor Turcz. and Amorpha fruticosa Linn. in the three artificial communities. The results indicated that the underground biomass of Amorpha fruticosa was stable in different artificial communities, and was suitable for mix planting. Root system biomass of community Ⅰ was the most abundant in the three artificial communities. The correlation of overground bionmass and underground bionmass was obvious positive. Total effective root density in community Ⅰ was far higher than those of community Ⅱ and community Ⅲ.

关 键 词：公路护坡 灌木 根系生物量 有效根密度 

分 类 号：Q948.12[生物学—植物学]