黄河三角洲滨海湿地地下水位变化对土壤种子库特征的影响

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	黄河三角洲滨海湿地地下水位变化对土壤种子库特征的影响
	冯璐 1; 刘京涛 1; 韩广轩 2; 张启浩 3; 彭玲 1
刊名	生态学报
	2021
卷号	41 期号:10 页码:3826-3835
关键词	地下水位物种多样性土壤种子库水溶性盐总量通径分析
ISSN号	1000-0933
其他题名	Effects of groundwater level fluctuation on characteristics of soil seed banks in coastal wetlands of the Yellow River Delta
文献子类	Article
英文摘要	Soil seed banks are sources for the future regeneration of plants and play an important role in long-term population balance.Groundwater level is one of the dominant environmental factors that affects the structure and function of wetland ecosystem.While the effects and mechanisms of groundwater level on the characteristics of soil seed banks in coastal wetlands have received less attention.In order to study the effects of groundwater level on soil seed bank density, species diversity and similarity between seed banks and aboveground vegetation, a field control experiment for groundwater level was carried out following the gradients of-20 cm,-60 cm, and-100 cm in the coastal wetlands of the Yellow River Delta.The relationship between soil chemical properties and characteristics of the corresponding seed banks was analyzed by correlation analysis, principal component analysis and path analysis to explore how different groundwater levels affect the characteristics of the soil seed banks.The study showed that Suaeda glauca and Suaeda salsa had the largest number of seeds in the soil seed banks collected in autumn(both transient and persistent seed banks) in coastal saline wetland of the Yellow River Delta.The change of groundwater level had no significant effects on the density of soil seed banks, but it had significant effects on species composition.As the depth of groundwater level increased, the species number of perennial herbs were increasing.Overall, as the depth of groundwater level increased, Margalef index and Shannon-Wiener index of soil seed banks increased accordingly.A novelty finding is that the similarity(Sorensen index) between seed banks and above-ground vegetation increased as the groundwater level increased in 5-10 cm soil layer.Principal component analysis showed that soil salt including total water-soluble salt content and saline ions concentration was the dominant factors affecting soil seed bank characteristics with a contribution ratio of 69.482% and soil nutrients including total carbon, nitrogen and phosphorus concentration were the secondary factors with a contribution ratio of 23.710%.Path analysis showed that soil total water-soluble salt content had the greatest negative influence on Margalef index and Shannon-Wiener index of seed banks.While soil available phosphorus concentration showed indirectly negative effects through total water-soluble salt content on Margalef index and Shannon-Wiener index of seed banks.Total phosphorus concentration promotes the similarity between seed banks and the above-ground vegetation.Our results indicated that groundwater level fluctuation mainly affected species diversity of soil seed banks by changing the content of soil total water-soluble salt in coastal wetlands of the Yellow River Delta.
语种	中文
CSCD记录号	CSCD:6982635
资助机构	国家"十三五"重点研发计划课题 ; 山东省自然科学基金项目 ; 国家自然科学基金项目 ; 山东省高等学校青创科技支持计划
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/30273]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
作者单位	1.滨州学院,山东省黄河三角洲生态环境重点实验室,滨州256600; 2.中国科学院烟台海岸带研究所,中国科学院海岸带环境过程与生态修复重点实验室,烟台264003; 3.杭州师范大学,杭州311121
推荐引用方式 GB/T 7714	冯璐,刘京涛,韩广轩,等. 黄河三角洲滨海湿地地下水位变化对土壤种子库特征的影响[J]. 生态学报,2021,41(10):3826-3835.
APA	冯璐,刘京涛,韩广轩,张启浩,&彭玲.(2021).黄河三角洲滨海湿地地下水位变化对土壤种子库特征的影响.生态学报,41(10),3826-3835.
MLA	冯璐,et al."黄河三角洲滨海湿地地下水位变化对土壤种子库特征的影响".生态学报 41.10(2021):3826-3835.