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Title:
模拟增温对土壤呼吸影响机制的研究进展与展望
Alternative Title: Research and prospects for response mechanisms of soil respiration to experimental warming.
Author: 孙宝玉; 韩广轩
Source: 应用生态学报
ISSN: 1001-9332
Issued Date: 2016-08-24
Volume: 27, Issue:10, Pages:3394-3402
Keyword: 模拟增温 ; 土壤呼吸 ; 适应性
DOI: 10.13287/j.1001-9332.201610.037
Rank: 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;中国科学院大学;
Corresponding Author: 韩广轩,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,E-mail:gxhan@yic.ac.cn
Department: 中科院海岸带环境过程与生态修复重点实验室
Abstract: 土壤呼吸是土壤碳库向大气碳库输入的主要途径,而温度升高会影响土壤呼吸从而改变全球碳平衡.据预测在21世纪末,全球平均地表温度将升高0.3~4.8℃,因此野外自然条件下的模拟增温试验对土壤呼吸的影响是全球变化研究的热点之一.本文综述了不同时空格局下土壤呼吸对模拟增温的响应特征,指出短期增温能提高土壤呼吸,而长期增温下无统一规律,并且不同生态系统之间也存在差异;重点讨论了模拟增温对土壤呼吸的影响机制,指出增温能直接影响土壤呼吸,同时增温也能通过影响土壤水分、盐分、土壤理化性质等环境因子以及光合作用、凋落物等生物因子对土壤呼吸产生间接影响;另外,分析了土壤呼吸对增温产生适应性的形成机制,主要包括微生...
English Abstract: Soil respiration ( Rs) is the main efflux of carbon pool from soil to atmosphere. Increasing R s caused by rising temperature can result in significant change in the global carbon balance. Global mean land-surface temperature is predicted to rise by 0.3-4.8 ℃ by the end of 21 century. Therefore, how R s responds to simulated experimental warming in the natural field is one of the critical issues in global change research. Here, we reviewed the response characteristics of Rs to simulated warming under different temporal and spatial patterns. Experimental warming can increase Rs at the short time scale, but there was no uniform law in the long-term warming experiments, and there were differences among different ecosystems. This paper also reviewed the mechanism underlying the simulated warming response of Rs. Warming can directly affect Rs, and warming can also affect Rs indirectly by affecting the environmental factors ( e.g., soil water, soil salt, soil physical and chemical properties) , and the regulation of biological factors ( e.g., photosynthesis, litter decomposition) . Furthermore, we synthesized the formation mechanism of adaptability of Rs to warming, including adaptability of microbes, roots and enzymes to warming, water restriction, and regulation by excessive nitrogen and the substrate supply. Finally, the future research directions were proposed. The study of micro-ecosystem of rhizosphere, characteristics and mechanism of Rs under asymmetric warming should be strengthened. Also, more attention should be paid to the measurement of Rs in typical phenological periods and typical weather in different seasons. The research network of Rs response to simulated warming should be constructed for networking test.
Funder: 国家自然科学基金项目(41301083) ; 中国科学院科技服务网络计划项目(KFJ-EW-STS-127)资助~~
DOC Type: 期刊论文
Indexed Type: CSCD
Language: 中文
Citation statistics:
Content Type: 期刊论文
URI: http://ir.yic.ac.cn/handle/133337/17246
Appears in Collections:滨海湿地实验室_期刊论文
中科院烟台海岸带研究所知识产出_期刊论文
中科院海岸带环境过程与生态修复重点实验室_期刊论文
山东省海岸带环境过程重点实验室_期刊论文

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description.institution: 1.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
2.中国科学院大学

Recommended Citation:
孙宝玉,韩广轩. 模拟增温对土壤呼吸影响机制的研究进展与展望[J]. 应用生态学报,2016,27(10):3394-3402.
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