黄土丘陵沟壑区红砂灌丛土壤种子库及其自然更新潜力评估

杨彩红; 李毅; 单立山; 段雅楠

doi:10.13961/j.cnki.stbctb.2016.02.020

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黄土丘陵沟壑区红砂灌丛土壤种子库及其自然更新潜力评估

试验研究

- 黄土丘陵沟壑区红砂灌丛土壤种子库及其自然更新潜力评估
- Soil Seed Bank and Natural Regeneration Potential of Reaumuria Soongorica Shrubs at Different Slope Positions in Loess Hilly and Gully Region
- 水土保持通报 2016年36卷第2期页码：105-109
- 作者机构：
  
  甘肃农业大学林学院,甘肃,兰州,730070
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目"‘红砂自然更新过程的生态学研究(31360205)’,‘红砂幼苗发生及根系生长对降水变化的响应(41361100)’";甘肃农业大学盛彤笙科技创新基金(GSAU-STS-1425);国家国际科技合作专项(2012DFR30830);甘肃省科技支撑计划项目(1204NKCA084)
- DOI：10.13961/j.cnki.stbctb.2016.02.020
  中图分类号：
- 纸质出版：2016
- 稿件说明：
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杨彩红, 李毅, 单立山, 等. 黄土丘陵沟壑区红砂灌丛土壤种子库及其自然更新潜力评估[J]. 水土保持通报, 2016,36(2):105-109.

YANG Caihong, LI Yi, SHAN Lishan, et al. Soil Seed Bank and Natural Regeneration Potential of Reaumuria Soongorica Shrubs at Different Slope Positions in Loess Hilly and Gully Region[J]. Bulletin of Soiland Water Conservation, 2016, 36(2): 105-109.
杨彩红, 李毅, 单立山, 等. 黄土丘陵沟壑区红砂灌丛土壤种子库及其自然更新潜力评估[J]. 水土保持通报, 2016,36(2):105-109. DOI： 10.13961/j.cnki.stbctb.2016.02.020.

YANG Caihong, LI Yi, SHAN Lishan, et al. Soil Seed Bank and Natural Regeneration Potential of Reaumuria Soongorica Shrubs at Different Slope Positions in Loess Hilly and Gully Region[J]. Bulletin of Soiland Water Conservation, 2016, 36(2): 105-109. DOI： 10.13961/j.cnki.stbctb.2016.02.020.

摘要

[目的

]

对黄土丘陵沟壑区红砂灌丛植被土壤种子库的特征及红砂灌丛植被自然更新潜力进行分析和评估

以说明红砂灌丛土壤种子库在植被恢复与重建中的重要作用。[方法

]

采用土壤种子库"萌发法"(每个地段10个2 m×2 m样方内分表土层0-2 cm和2-5 cm土层采集土样)及野外植被调查方法

对黄土丘陵沟壑不同坡位红砂灌丛土壤种子库进行研究。[结果

]

黄土丘陵沟壑区红砂灌丛植被土壤种子库发芽试验共观察到的4 251株幼苗

分属于9个物种。土壤种子库密度在100~1 000粒/m

物种数在0.8~1.2种/0.01 m

下坡段的土壤种子库平均种子密度和平均物种数均比上坡段高。3个坡段的2个层次的平均种子密度和平均物种数均随土层加深而减小。3个坡段土壤种子库和地上植被的组成物种多为草本植物和红砂灌丛

地上植被与其土壤种子库的密度及物种数均呈不显著相关;物种组成的Sorensen相似性指数较高

均达到0.60以上

且土壤种子库比地上植被具有更高的物种丰富度。[结论

]

黄土丘陵沟壑区红砂灌丛具有依靠土壤种子库实现自然更新的潜力

但由于物种组成种类较少

现存灌丛植被一旦遭到破坏

仅靠土壤种子库恢复现存植被是困难的

需要在对自然恢复潜力评估的基础上

积极采取人工保护促进自然恢复的策略。

Abstract

[Objective] To evaluate and predict the natural regeneration potential of Reaumuria soongorica shrub vegetation in the hilly-gullied loess plateau region

we investigated the soil seed bank and its associated vegetation in the upper

middle and the lower slope site. [Methods] Seed germination method and field vegetation survey were both used. Ten plots(2 m×2 m) at each site were established for vegetation investigation and seed bank sampling at layers of 0-2 cm and 2-5 cm. [Results] A total of 4 251 seedlings belonging to 9 species of the soil seed banks were recorded. The soil seed bank density was 100~1 000 seed/m2 and the number of species was 0.8~1.2 species/0.01 m2. Both the mean seed density(seed/m2) and the mean number of species(species/0.01 m2) were found to be higher in the lower slope site than that in the upper slope site. The mean values of the seed density and the species number for soil seed bank at 0-2 cm soil layer were significant higher than that of 2-5 cm soil layer for all three slope sites. Most of the species found in the soil seed banks and in aboveground vegetations at the three slope sites were herb and Reaumuria soongorica shrub vegetation. The mean density and the mean number of species in the soil seed banks were not correlated with the ones of vegetation. Soil seed bank was found had high similarity(Sorensen's index > 0.60) to its associated vegetation in species composition. And the species richness of soil seed banks was higher than that of aboveground vegetations. [Conclusion] Natural regeneration potential of Reaumuria soongorica shrub vegetation by germination of soil seed banks in the hilly-gullied loess plateau region was low. Once the present vegetation is destroyed

the natural restoration of vegetations is hardly possible. Therefore

artificial restoration strategy in combination with natural regeneration should be applied to promote vegetation recovery.

关键词

Keywords

references

杨涛,王得祥,周金星,等.陕北黄土丘陵沟壑区退耕地植物群落演替规律及物种多样性动态研究[J].西北林学院报,2009,24(5):10-15.

Baskin J M, Baskin C C. Ecology of Soil Seed Banks. Physiology of Dormancy and Germination in Relation to Seed Bank Ecology[M]//Leck M A, Parker V T, Simpson R L. San Diego:Academic Press, California,1989.

李秋艳,赵文智.干旱区土壤种子库的研究进展[J].地球科学进展, 2005,20(3):350-358.

Pugnaire F I, Lazaro R. Seed bank and under storey species composition in a semi-arid environment:The effect of shrub age and rainfall[J]. Annals of Botany, 2000, 86(4):807-813.

Wang Chenghuan, Tang Long, Fei Shenfeng, et al. Determinants of seed bank dynamics of two dominant helophytes in a tidal salt marsh[J]. Ecological engineering, 2009,35(5):800-809.

Qiu Jie, Bai Yuguang, Fu Yongbi, et al. Spatial variation in temperature thresholds during seed germination of remnant

Festuca hallii

populations across the Canadian prairie[J]. Environmental and Experimental Botany, 2010,67(3):479-486.

张涛,何明珠,陈智平,等.干旱矿区废弃地重金属生境土壤种子库时空动态[J].水土保持通报,2014,34(4):296-300,307.

Erfanzadeh R, Hendrickx F, Maelfait J P, et al. The effect of successional stage and salinity on the vertical distribution of seeds in salt marsh soils[J]. Flora, 2010,205(7):442-448.

黄茂林,梁银丽,周茂娟,等.陕北黄土丘陵沟壑区水土保持耕作及施肥下农田土壤种子库特征[J].生态学报,2009,29(7):3987-3994.

陈宇,焦菊英,王宁,等.黄土丘陵区撂荒地不同侵蚀带土壤种子库特征[J].水土保持研究,2012,19(1):1-5.

白文娟,焦菊英,张振国.黄土丘陵沟壑区退耕地土壤种子库与地上植被的关系[J].草业学报,2007,16(6):30-38.

张进虎,王翔宇,张亮霞,等.天然沙冬青土壤种子库特征研究[J].中国农学通报,2013,29(22):78-82.

张涛,田长彦,孙羽,等.古尔班通古特沙漠地区短命植物土壤种子库研究[J].干旱区地理,2006,29(5):675-681.

赵丽娅,李兆华,李锋瑞,等.科尔沁沙地植被恢复演替进程中群落土壤种子库研究[J].生态学报,2005,25(12):3204-3211.

马全林,卢琦,魏林源,等.干旱荒漠白刺灌丛植被演替过程土壤种子库变化特征[J].生态学报,2015,35(7):2285-2294.

李彦娇,包维楷,吴福忠.岷江干旱河谷灌丛土壤种子库及其自然更新潜力评估[J].生态学报,2010,30(2):399-407.

Csontos P. Seed banks:Ecological definitions and sampling considerations[J]. Community Ecology, 2007,8(1):75-85.

于顺利,蒋高明.土壤种子库的研究进展及若干研究热点[J].植物生态学报,2003,27(4):552-560.

袁宝妮,李登武,李景侠,等.黄土丘陵沟壑区植被自然恢复过程中土壤种子库特征[J].干旱地区农业研究,2009,27(6):215-222.

袁玉欣,王颖.不同土地利用状况下土壤种子库与地表植被变化特征[J].中国造纸学报,2004(S):400-403.

赵凌平,程积民,王占彬.持久种子库在黄土高原植被恢复中的作用[J].草业科学,2013,30(1):104-109.

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