[1]寇萌,焦菊英,杜华栋,等.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(01):12-18.[doi:10.3969/j.issn.1001-7461.2013.01.03]
　KOU Meng,JIAO Ju-ying,DU Hua-dong,et al.Species Diversity and Biomass of Herbosa at Different Site Conditions in the Hilly-gullied Loess Plateau[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(01):12-18.[doi:10.3969/j.issn.1001-7461.2013.01.03]
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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()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第28卷
期数:
2013年01期
页码:
12-18
栏目:
出版日期:
2013-01-30

文章信息/Info

Title:
Species Diversity and Biomass of Herbosa at Different Site Conditions in the Hilly-gullied Loess Plateau
文章编号:
1001-7461(2013)01-0012-07
作者:
寇萌; 焦菊英; 杜华栋; 王志杰; 王巧利; 苏嫄
 (1.西北农林科技大学 林学院， 陕西 杨陵 712100；2.西北农林科技大学 水土保持研究所， 陕西 杨陵 712100；3.中国科学院 水利部 水土保持研究所， 陕西 杨陵 712100；4.西北农林科技大学 资源环境学院，陕西 杨陵 712100)
Author(s):
KOU Meng; JIAO Ju-ying; DU Hua-dong; WANG Zhi-jie; WANG Qiao-li; SU Yuan
 (1.College of Forestry,Northwest A&F University,Yangling,Shaanxi 712100,China;2.Institute of Soil and Water Conservasion,Northwest A&F University,Yangling,Shaanxi 712100,China;3.Institute of Soil and Water Conservasion,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China;4.College of Resources and Environment,Northwest A&F University,Yangling,Shaanxi 712100,China)
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
Keywords:
hilly-gullied Loess Plateau; site condition; herbosa; species diversity; biomass
分类号:
Q948.1
DOI:
10.3969/j.issn.1001-7461.2013.01.03
文献标志码:
A
摘要:
以黄土丘陵沟壑区张家河、麻地沟流域草本群落为研究对象，分析物种多样性、地上生物量、枯落物量随立地条件的变化趋势及三者间的相互关系。结果表明，物种数表现为阴梁峁坡>阴沟坡>峁顶>阳梁峁坡>阳沟坡，Margalef指数表现为阴梁峁坡>阴沟坡>阳沟坡>阳梁峁坡>峁顶，物种数和Margalef指数在不同立地条件下有极显著或显著差异；Shannon-Wiener指数与Pielou指数在阳坡由坡下到坡上呈减少趋势，在阴坡由坡下到坡上呈增加趋势，但差异不显著；地上生物量表现为阳沟坡>阴沟坡>阳梁峁坡>阴梁峁坡>峁顶，不同立地条件的差异不显著；枯落物量表现为阳沟坡>阳梁峁坡>峁顶>阴梁峁坡>阴沟坡，阳沟坡分别与阴梁峁坡、阴沟坡差异显著；由于多种因素的综合作用，物种多样性指数、地上生物量、枯落物量相互之间的相关性并未达到显著水平。
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.

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