西北林学院学报2013，Vol.28Issue(1)：12-18,7.DOI:10.3969/j.issn.1001-7461.2013.01.03
黄土丘陵沟壑区不同立地条件草本群落物种多样性与生物量研究
Species Diversity and Biomass of Herbosa at Different Site Conditions in the Hilly-gullied Loess Plateau
摘要
Abstract
Taking the herbosa occurring in different site conditions in Zhangjiahe and Madigou watersheds located on the hilly-gullied Loess Plateau in northern Shaanxi as research objects,species diversity,above-ground biomass and litter amount under different site conditions, as well as their relationships were analyzed. The results showed that the number of species was in the order of shady ridge slope＞ shady gully slope＞ridge top＞sunny ridge slope＞sunny gully slope, Margalef index was in the order of shady ridge slope＞shady gully slope＞sunny gully slope＞sunny ridge slope＞ridge top, and extremely significant or significant differences were found among them. In the sunny slop,Shannon-Wiener index and Pielou index decreased from gully slope to ridge slope, while increased from gully slope to ridge slope in shady slope, but they were not significantly different. Above-ground biomass was in the order of sunny gully slope＞ shady gully slope＞sunny ridge slope＞shady ridge slope＞ridge top,and the differences were not significant. Litter amount was in the order of sunny gully slope＞sunny ridge slope＞ridge top＞shady ridge slope＞shady gully slope,but only reached significantly different level between sunny gully slope and shady ridge slope, and shady gully slope. As a result of the comprehensive function of many factors, the relationships among species diversity index,above-ground biomass and litter amount were not significantly different.关键词
黄土丘陵沟壑区/立地条件/草本群落/物种多样性/生物量Key words
hilly-gullied Loess Plateau/site condition/herbosa/species diversity/biomass分类
农业科技引用本文复制引用
寇萌,焦菊英,杜华栋,王志杰,王巧利,苏嫄..黄土丘陵沟壑区不同立地条件草本群落物种多样性与生物量研究[J].西北林学院学报,2013,28(1):12-18,7.基金项目
国家自然科学基金重点项目(41030532) （41030532）
中国科学院重要方向项目(KZCX2-EW-406). （KZCX2-EW-406）
