Relationship Between Plantation Density and Diversity of Haloxylon Ammodendron Forest in Minqin County, Gansu Province

ZHAN Yufang; TENG Yufeng; ZHEN Weiling; QIAN Wanjian; MU Gang

doi:10.13961/j.cnki.stbctb.2017.06.010

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Relationship Between Plantation Density and Diversity of Haloxylon Ammodendron Forest in Minqin County, Gansu Province

- Relationship Between Plantation Density and Diversity of Haloxylon Ammodendron Forest in Minqin County, Gansu Province
- Bulletin of Soiland Water Conservation Vol. 37, Issue 6, Pages: 62-67(2017)
- 作者机构：
  
  张掖市林业科学研究院,甘肃,张掖,734000
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2017.06.010
  CLC：
- Published：2017
- 稿件说明：
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ZHAN Yufang, TENG Yufeng, ZHEN Weiling, et al. Relationship Between Plantation Density and Diversity of Haloxylon Ammodendron Forest in Minqin County, Gansu Province[J]. Bulletin of Soiland Water Conservation, 2017, 37(6): 62-67.
DOI：

ZHAN Yufang, TENG Yufeng, ZHEN Weiling, et al. Relationship Between Plantation Density and Diversity of Haloxylon Ammodendron Forest in Minqin County, Gansu Province[J]. Bulletin of Soiland Water Conservation, 2017, 37(6): 62-67. DOI： 10.13961/j.cnki.stbctb.2017.06.010.

摘要

[目的

]

开展梭梭人工林不同密度对林下植物多样性的影响研究，为合理经营梭梭人工林，充分发挥其生态功能提供技术支持。[方法

]

以甘肃省民勤县5种不同密度（1 250，1 111，1 000，1 333，1 667株/hm

）10~15年生梭梭人工林林下植物的重要值、丰富度指数、多样性指数、均匀度指数为指标，对林下植物多样性随林分密度的变化规律进行分析。[结果

]

①梭梭人工林林下共有植物16种，隶属于9科15属，其中灌木层6科6属6种，草本层4科7属10种。②灌木层优势种随着密度变化明显，草本层优势物种受密度影响较小。③林下植被多样性对密度响应具有非同步性。随着密度的增加，呈现先增大后减少的变化规律。④综合评分表明，民勤县梭梭人工林密度为1 250株/hm

时林下植被多样性水平较好，比较适合林下植被生长。[结论

]

林下植被多样性指数对密度响应具有非同步性，比较适合林下植被生长的密度为1 250株/hm

。

Abstract

[Objective] Studying the effect of plantation density on understory plant diversity of Haloxylon persicum

to give support for ecological function and technical management of Haloxylon persicum.[Methods] Five types (1 250

1 111

1 000

1 333

1 667 plants/hm2) of 10~15 years' stand density were selected

and indices of important values

species richness

species diversity index

evenness were calculated to study the relationship between stand density and plant diversity of Haloxylon ammodendron plantation in Minqin County

Gansu Province.[Results] ① There were 16 vascular plants in 15 families and 9 genera of the under-growths in Haloxylon ammodendron forest. Among them

there were 6 families

6 genera and 6 species in shrub layer

and 4 families

7 genera and 10 species in herb layer. ② The dominant species of shrub layer changed obviously with the variation of plantation density

while the dominant species of herb layer were hardly influenced by density. ③ Plant diversity of understory vegetation responded non-linearly to stand density. As stand density increased

plants diversity increased initially and decreased laterally. ④ Comprehensive evaluation showed

when density arrived at 1 250 plants/hm2

the understory plant diversity reached the maximum. At that plantation density

the growth and development of understory vegetation performed well.[Conclusion] The response of plant diversity of understory vegetation to stand density was non-linear. When the density arrived at 1 250 plants/hm2

the density was more appropriate for the growth and development of understory vegetation.

关键词

Keywords

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