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Forest and Grassland Resources Research >

2017 , Vol. 0 >Issue 1: 63 - 69

DOI: https://doi.org/10.13466/j.cnki.lyzygl.2017.01.012

Scientific Research

Research on Boundary Definition and Plant Community Diversity of wetland-grassland Ecotone —A case study:Siertan Wetland in Ningxia

  • Xiangling SU ,
  • Zhenxi WANG
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  • 1. Xinjiang Forestry Planning Institute,Urumqi 830049,China
    2. College of Forestry and Horticulture,Xinjiang Agricultural University,Urumqi 830052,China
    3. Key Laboratory of Forestry Ecology and Industry Technology in Arid Region,Education Department of Xinjiang,Urumqi 830052,China

Received date: 2016-11-09

  Revised date: 2016-11-23

  Online published: 2020-10-03

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Abstract

In order to study boundary definition and plant diversity of wetland-grassland ecotone in Yanchi country,Ningxia,vegetation investigation was carried out in July,2014.The moving split-window technique was applied to the quantitative determination of ecotone and diversity indexes(species diversity index,community dominant concentration index,community evenness index,species richness index)were used to analyze plant community diversity.The results showed:(1)When window width was 6 quadrats,it can clearly delineate the ecotone boundary;The ecotone boundary of east,west,south,north line transect is 120m,120m,120m,140m respectively and distance from core area of wetland is 180m,220m,240m,200m respectively;(2) species diversity index,community evenness index,species richness index of the four transect lines all followed the order of ectone>arid region>wet region,while community dominant concentration index was in such an order as arid region>ectone>wet region;(3)The species diversity index,community dominant concentration index,community evenness index of north line transect were higher,but four diversity indexes of west line transect were lower.The results can provide theoretical support and scientific basis for the protection of valuable wetland resources,the maintenance of biological diversity and the stability of ecological system in arid and semi-arid regions.

Key words： ecotone; moving split-window technique; plant community diversity

Cite this article

Xiangling SU , Zhenxi WANG . Research on Boundary Definition and Plant Community Diversity of wetland-grassland Ecotone —A case study:Siertan Wetland in Ningxia[J]. Forest and Grassland Resources Research, 2017 , 0(1) : 63 -69 . DOI: 10.13466/j.cnki.lyzygl.2017.01.012

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