应用生态学报 ›› 2016, Vol. 27 ›› Issue (10): 3394-3402.doi: 10.13287/j.1001-9332.201610.037
• 综合评述 • 上一篇
孙宝玉1,2, 韩广轩1*
收稿日期:
2016-03-28
发布日期:
2016-10-18
通讯作者:
* E-mail: gxhan@yic.ac.cn
作者简介:
孙宝玉, 女, 1990年生, 硕士研究生. 主要从事全球变化下滨海湿地碳循环研究. E-mail: bysun@yic.ac.cn
基金资助:
SUN Bao-yu1,2, HAN Guang-xuan1*
Received:
2016-03-28
Published:
2016-10-18
Contact:
* E-mail: gxhan@yic.ac.cn
Supported by:
摘要: 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,主要包括微生物、根、酶的温度适应性、水分限制、氮素过量以及呼吸底物限制.在此基础上对今后的研究方向加以展望:加强根际微生态系统的研究;重点研究不对称增温下土壤呼吸的特征及机制;关注典型物候期和不同季节典型天气土壤呼吸的测定;构建土壤呼吸响应模拟增温试验的研究网络,进行联网试验.
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.
SUN Bao-yu, HAN Guang-xuan. Research and prospects for response mechanisms of soil respiration to experimental warming[J]. Chinese Journal of Applied Ecology, 2016, 27(10): 3394-3402.
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