春季降雨分配变化对黄河三角洲滨海湿地土壤呼吸的影响

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	春季降雨分配变化对黄河三角洲滨海湿地土壤呼吸的影响
	马澍 1,2,3; 陶宝先 1; 韩广轩 2,3; 王晓杰 2,3; 李培广 2,3; 初小静 2,3
刊名	生态学杂志
	2021
卷号	40 期号:7 页码:2094-2103
关键词	降雨分配土壤呼吸水盐运移地下生物量滨海湿地
ISSN号	1000-4890
其他题名	Effects of spring rainfall distribution on soil respiration in a coastal wetland of the Yellow River Delta
文献子类	Article
英文摘要	Changes of rainfall seasonal pattern would affect carbon cycling in coastal wetlands by influencing the transport of water and salt in soils. Seed germination and plant growth in coastal wetlands are sensitive to rainfall availability in spring,but the underlying mechanism of spring rainfall distribution on soil respiration is still unclear. An in-situ spring rainfall control field experiment with five treatments (+73%,+56%,control,-56% and -73% in spring,but the annual total rainfall remained the same) were set up to explore the effects of spring rainfall distribution on soil respiration of a coastal wetland on the Yellow River Delta. Soil water content in spring significantly increased with the increasing rainfall partitioning in spring,while that in autumn significantly decreased. The seasonal variation of soil salinity was opposite to soil moisture, and soil salinity showed strongest fluctuations in spring compared with other seasons. The total belowground biomass and the proportion of belowground biomass in deep soil layer increased with the increasing spring rainfall partitioning,while the proportion of belowground biomass in shallow soil layer showed an opposite pattern. Mean annual soil respiration rate was decreased with the decreasing spring rainfall partitioning,and was significantly different between +73% and -73% treatments (P<0.05). Soil respiration rate differed among different seasons. Soil respiration rate in spring and summer increased with the increasing rainfall partitioning in spring,but decreased in autumn and winter. However,the positive effect of increased spring rainfall partitioning on soil respiration in spring and summer was much greater than the negative effect in autumn and winter. Mean annual soil respiration was closely related to soil moisture and soil salinity in spring,and remarkably affected by the proportion of belowground biomass of different soil layers and total belowground biomass.
语种	中文
CSCD记录号	CSCD:7010601
资助机构	国家自然科学基金项目 ; 山东省自然基金项目
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/30266]
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.聊城大学环境与规划学院,山东聊城252000; 2.中国科学院烟台海岸带研究所海岸带环境过程与生态修复重点实验室,山东烟台264003; 3.中国科学院黄河三角洲滨海湿地生态系统野外科学观测研究站,山东东营257000
推荐引用方式 GB/T 7714	马澍,陶宝先,韩广轩,等. 春季降雨分配变化对黄河三角洲滨海湿地土壤呼吸的影响[J]. 生态学杂志,2021,40(7):2094-2103.
APA	马澍,陶宝先,韩广轩,王晓杰,李培广,&初小静.(2021).春季降雨分配变化对黄河三角洲滨海湿地土壤呼吸的影响.生态学杂志,40(7),2094-2103.
MLA	马澍,et al."春季降雨分配变化对黄河三角洲滨海湿地土壤呼吸的影响".生态学杂志 40.7(2021):2094-2103.