Species diversity and its relation with soil factors under different site conditions in a desert-oasis ecotone

被引：0

作者：

TingTing Xie ^{[1
]}

PeiXi Su ^{[2
]}

ZiJuan Zhou ^{[2
]}

ShanJia Li ^{[2
]}

HaiNa Zhang ^{[2
]}

机构：

[1] Linze Inland River Basin Research Station/Heihe Key Laboratory of Ecohydrology and Integrated River Basin Science, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences

[2] Linze Inland River Basin Research Station/Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences

来源：

SciencesinColdandAridRegions | 2013年 / 5卷 / 03期

关键词：

desert-oasis ecotone; species diversity; soil factor; canonical correspondence analysis;

D O I：

暂无

中图分类号：

S154 [土壤生物学];

学科分类号：

071012 ; 0713 ;

摘要：

Vegetation and soil surveys were conducted under different site conditions in 2007-2011 to study species diversity using richness, evenness and diversity indices, in the middle portion of the Heihe River Basin. The relationship between species distribution and soil environmental factors was also studied by Canonical Correspondence Analysis (CCA). Results show that vegetation coverage and species diversity were the highest in the interdune lowland, and the lowest in the mobile dune. Results of the Hill's index (diversity ordering) shows that species diversity is reduced along decreasing soil water content, and the order of species diversity was interdune lowland, flat slope, fixed dune, semifixed dune and mobile dune. The influence degree of soil factors on vegetation distribution was soil water content > pH > total K > organic matter > available N > total N > available K > total P > saline content > available P. Soil water content and pH were important factors significantly affecting spatial distribution difference of vegetation, the environmental explanation was 98%.

引用

页码：331 / 338

页数：8

共 22 条

[1] 民勤荒漠绿洲过渡带白刺灌丛沙堆演化阶段及其空间格局 [J].