水土保持研究2011，Vol.18Issue(3)：92-96,5.
民勤绿洲-荒漠过渡带植物物种多样性及其优势种群空间分布格局研究
Studies on Species Diversity and Spatial Distribution Pattern of Dominant Populations in the Transition Zone between Minqin Oasis and Desert
摘要
Abstract
With the transition zone between Minqin oasis and desert as subjects, using the quadrat survey procedure, species diversity and spatial distribution pattern of dominant populations in the transition zone between Minqin oasis and desert have been studied through testing species important value, abundance index (R), Shannon-Winer species diversity index (H'), Simpson dominance index (D), evenness indices (Jsw),diffusion coefficient (C), negative binomial parameter (K), mean crowding (m* ), clumping index (Ⅰ),patchiness index (PI), Green index (GI), Cassie index (CA), dispersal index (Iδ) in various types region.The results showed that the dominant species populations are Calligonum mongolicum, Nitraria tangutorum, Haloaylon ammodendron , and the companion species are Salsola ikonnikovii , Bassia dasyphylla ,Phragmites communis, griophyllum squarrosum.Suffering the influence of the sand dune type and the habitat, every population indicated the accumulation distribution pattern, but the accumulation degree had certain difference; The species diversity and the abundance changed regularly with gradient of Minqin oasis and desert, but overall performance showed tendency to ascend.The habitat and the type of sand dune in this region are a determining factor for species diversity and spatial distribution pattern of populations.关键词
绿洲过渡带/物种多样性/优势种群分布格局Key words
transition zone/ species diversity/ distribution pattern of dominant population分类
生物科学引用本文复制引用
郭树江,杨自辉,王多泽,李得禄,李爱德,詹科杰,王强强..民勤绿洲-荒漠过渡带植物物种多样性及其优势种群空间分布格局研究[J].水土保持研究,2011,18(3):92-96,5.基金项目
国家自然科学基金项目(30960321,30872069) （30960321,30872069）
国家公益性行业(林业)科研专项(200804031) （林业）
