Influences of Peat and Perlite on Germination Characteristics of Soil Seed Bank

ZHAO Na; HE Mengxuan; LI Hongyuan

doi:10.13961/j.cnki.stbctb.2016.06.016

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Influences of Peat and Perlite on Germination Characteristics of Soil Seed Bank

- Influences of Peat and Perlite on Germination Characteristics of Soil Seed Bank
- Bulletin of Soiland Water Conservation Vol. 36, Issue 6, Pages: 92-96(2016)
- 作者机构：
  
  南开大学环境科学与工程学院,天津,300350
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2016.06.016
  CLC：
- Published：2016
- 稿件说明：
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ZHAO Na, HE Mengxuan, LI Hongyuan. Influences of Peat and Perlite on Germination Characteristics of Soil Seed Bank[J]. Bulletin of Soiland Water Conservation, 2016, 36(6): 92-96.
DOI：

ZHAO Na, HE Mengxuan, LI Hongyuan. Influences of Peat and Perlite on Germination Characteristics of Soil Seed Bank[J]. Bulletin of Soiland Water Conservation, 2016, 36(6): 92-96. DOI： 10.13961/j.cnki.stbctb.2016.06.016.

摘要

[目的] 探究基质添加对土壤种子库种子萌发特征的影响，为今后土壤种子库应用于植被恢复工程提供有价值的参考。[方法] 借鉴日本植被恢复的先进经验，采用温室萌发法探究有机基质（草炭）、无机基质（珍珠岩）及混合基质（草炭与珍珠岩）添加对土壤种子库种子萌发特征的影响。[结果] 草炭与珍珠岩混合基质对土壤种子库密度、物种多样性的促进作用更为明显，当混合基质与表土配比为20%和30%时，Shannon-Wiener多样性指数和种子库密度分别达到最高值；种子库萌发曲线中，混合基质组的萌发效果明显高于空白组和其他组；种子库密度与土壤因子的多元回归分析中，C，N，P，K元素均对种子库密度影响显著，进一步通过CCA排序法，分析发现大部分植物均对土壤含水率和C，N，P，K等元素有一定程度上的要求。[结论] 向表土中添加混合基质作为一种人工措施，能有效地促进种子库密度和物种多样性，可为植被恢复工程提供具有实用价值的参考。

Abstract

[Objective] The impacts on germination characteristics of soil seed bank(SSB) by adding different substrates were researched to provide valuable reference for the application of soil seed bank in vegetation restoration project in the future.[Methods] In the light of experience from Japan vegetation restoration

greenhouse germination was used to explore the impacts on germination characteristic of SSB by adding different substrates

such as organic substrate(peat)

inorganic substrate(perlite) and mixed substrate(peat and perlite).[Results] Seed density and species diversity indexes were apparently improved by adding mixed substrate(peat and perlite). The mixing ratio with topsoil of 20% and 30% had witnessed the highest Shannon-Wiener diversity index and soil seed bank density. For germination curves of SSB

the mixed substrate group showed greater advantage than those of control group and other groups. Multiple regression analysis between soil seed bank density and soil properties

including C

K elements

showed that soil properties had extremely significant influence on the density of soil seed bank. CCA analysis showed that most plants had a certain degree of requirements on moisture content

P and K elements.[Conclusion] As a kind of artificial measures

adding mixed substrate to topsoil can promote the seed density and species diversity effectively

which is valuable for the vegetation restoration.

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references

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