Analysis of Soil Seed Bank Characteristics in Baxian Mountain of Jixian County Based on Detrended Canonical Correspondence Analysis

HE Mengxuan; MO Xunqiang; LI Hongyuan

doi:10.13961/j.cnki.stbctb.2015.03.065

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Analysis of Soil Seed Bank Characteristics in Baxian Mountain of Jixian County Based on Detrended Canonical Correspondence Analysis

- Analysis of Soil Seed Bank Characteristics in Baxian Mountain of Jixian County Based on Detrended Canonical Correspondence Analysis
- Bulletin of Soiland Water Conservation Vol. 35, Issue 3, Pages: 325-330(2015)
- 作者机构：
  
  1. 南开大学环境科学与工程学院,天津,300071
  2. 天津师范大学城市与环境科学学院,天津,300387
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.03.065
  CLC：
- Published：2015
- 稿件说明：
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HE Mengxuan, MO Xunqiang, LI Hongyuan. Analysis of Soil Seed Bank Characteristics in Baxian Mountain of Jixian County Based on Detrended Canonical Correspondence Analysis[J]. Bulletin of Soiland Water Conservation, 2015, 35(3): 325-330.
DOI：

HE Mengxuan, MO Xunqiang, LI Hongyuan. Analysis of Soil Seed Bank Characteristics in Baxian Mountain of Jixian County Based on Detrended Canonical Correspondence Analysis[J]. Bulletin of Soiland Water Conservation, 2015, 35(3): 325-330. DOI： 10.13961/j.cnki.stbctb.2015.03.065.

摘要

[目的] 通过研究天津市蓟县八仙山土壤种子库特征

为土壤种子库应用于植被恢复提供参考。[方法] 采用除趋势典范对应分析(DCCA)方法探究土壤种子库与环境因子的关系。[结果] (1) 相比天津市其他样地

蓟县八仙山土壤种子库萌发物种丰富度较高

物种高达42种

但土壤种子库密度却最低

这与岩石裸露

土层薄弱

动物取食效应明显有很大关系; (2) 土壤种子库的Sorensen相似性指数较低

但Simpson生态优势度指数、Shannon-Wiener多样性指数和Pielow均匀度指数却较高; (3) 随着海拔逐渐升高

群落结构明显变化

木本植物数量增多。随着坡向逐渐向阳

植被类型由喜阴植物逐渐变成向阳植物。[结论] 通过DCCA分析

土壤种子库物种呈现明显的3个聚类。影响土壤种子库主要的土壤因子为有机质、pH值和全磷。

Abstract

[Objective] To study the characteristics of soil seed bank(SSB) in Baxian Mountain in Jingxian County of Tianjin City in order to provide reference for vegetation restoration using SSB.[Methods] As a new correspondence analysis method

the detrended canonical correspondence analysis(DCCA) method can overcome the arch effect and give better explanation between plant communities and environmental factors. [Results] (1) Compared with other plots of Tianjin City

the species richness of SSB was very high

reaching to 42 species

but the density of SSB was the lowest. The bare rock

thin soil and obvious animal feeding effect were main reasons for the low density. (2) The Sorensen similarity index was very low

but the Shannon-Wiener diversity index

the Simpson index and the Pielow index were very high. (3) With the increase of the altitude

the community structure changed rapidly

the number of woody plants increased. With the slope exposing to the sun

the type of plants changed from shade plants to light plants.[Conclusion] By DCCA analysis

three obvious clusterings were presented. Organic matter

pH value and total phosphorus were main soil factors which affected the distribution of SSB.

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