首页关于本刊影响因子及获奖投稿须知订阅及广告专辑与专题学术会议绿色发表通道优秀论文 
说明:
此论文已被《生态学报》录用,现已优先出版,可查看文章PDF版本!
赵玉皓,张艳杰,严月,刘玉槐,徐燕,刘苑秋,娄翼来,鲁顺保.亚热带退化红壤区森林恢复类型土壤有机碳矿化对温度的响应.生态学报,2018,(14).http://dx.doi.org/10.5846/stxb201707181295  
亚热带退化红壤区森林恢复类型土壤有机碳矿化对温度的响应
Response to different temperature under different forest recovery types on soil organic carbon mineralization in subtropics
投稿时间:2017-07-18  修订日期:2018-02-08
DOI: 10.5846/stxb201707181295
关键词土壤呼吸,温度,森林类型,温度敏感性
Key WordsSoil respiration, temperature, forest  types, temperature sensitivity
基金项目国家自然科学基金 (31560168, 31660072, 31760136);江西省自然基金(20161BAB2041);江西省教育厅基金 (GJJ160312);江西师范 大学研究生创新基金(YJS2016083);研究生境内外访学基金联合资助
作者单位E-mail
赵玉皓 江西师范大学 生命科学学院 江西 南昌 zhaoyuhao2018@126.com 
张艳杰 江西师范大学 生命科学学院  
严月 江西师范大学 生命科学学院  
刘玉槐 江西师范大学 生命科学学院  
徐燕 江西师范大学 生命科学学院  
刘苑秋 江西农业大学 林学院  
娄翼来 中国农业科学院  
鲁顺保 江西师范大学 luxunbao8012@126.com 
摘要点击次数 84
全文下载次数 15
摘要:
土壤有机质分解是陆地生态系统碳循环的重要环节,它不仅受植被类型的影响,对环境温度也十分敏感。以江西省泰和县石溪退化红壤区马尾松 (Pinus massoniana)、木荷 (Schima superb)和枫香 (Liquidambar formosana) 3种森林类型为研究对象,将其土壤分别置于4种不同温度(5、15、25℃和35℃)条件下培养,采用碱液吸收法进行为期35 d的土壤碳矿化研究。在同一温度条件下,不同林型土壤CO2累计碳排放量大小顺序为:枫香>马尾松>木荷。在4种不同温度条件下枫香林地土壤CO2累计排放量最大,其次是马尾松林、木荷林,且不同森林类型土壤CO2累计排放量随温度升高而增加(P < 0.05)。在15℃、25℃和35℃条件下,不同林地土壤潜在碳排放量间无显著性差异。在15℃和25℃条件下,土壤碳排放量随土壤全碳含量呈现先增后减的变化趋势(P < 0.05),全碳的极值点分别约为1.83% 和 1.89%。不同植被类型和培养温度对土壤碳矿化量有显著影响,说明植被类型和温度能够对土壤呼吸产生重要影响,且不同温度对土壤呼吸作用更显著(P < 0.000),但两因素间并无显著交互效应。在25℃时,不同林型土壤碳排放量随土壤含水量先增后减,表明土壤含水量并不是影响土壤碳排放量的调控因子。采用单库模式方程Cm=Co(1-exp-kt)对土壤潜在碳排放进行模拟,得出不同温度不同林型土壤最大碳排放量随温度升高而增加。不同林型不同温度条件下土壤Q10值范围为1.797—1.971,变化幅度较小,且不同林型土壤Q10值并未表现出显著性差异,这一结论为研究林型和温度对土壤碳矿化的影响提供参考。
Abstract:
The decomposition of soil organic matter is an important part of the carbon cycle in terrestrial ecosystems; it is affected by vegetation type, and highly sensitive to environmental temperature, as well. Our research object was three forest types that Pinus massoniana, Schima superba, and Liquidambar formosana of Shixi town in Jiangxi Province degraded red soil region; this soil was incubated at various temperatures (5°C, 15°, 25°C, and 35°C). The alkali absorption method was employed for 35 d soil for carbon mineralization. The order of soil CO2 cumulative carbon at same temperature in different forest types was observed to be Liquidambar formosana > Pinus massoniana > Schima superba. Cumulative CO2 emissions from Liquidambar formosana forest soil at different temperature were the largest, followed by Pinus massoniana and Schima superba forest soils. There was no significant difference in the soil potential carbon emissions between the three forest types at 15°C, 25°C, and 35°C. The soil carbon emissions increased at first, and then, decreased with total soil carbon (TN) (P < 0.05). The mean TN and peak SM values were 1.83% and 1.89%, respectively, at 15°C and 25°C. There were significant effects on soil carbon mineralization under different vegetation types and soil temperature; vegetation type and soil temperature could have a significant impact on soil respiration, and there were highly significant effects of different temperatures on soil respiration than those of forest types (P < 0.000). There was no interaction effect between forest type and soil temperature. Soil carbon emissions increased at the early stage, and then, decreased with SM at 25°C. The results indicated that SM was not a regulatory factor affecting soil carbon emissions. The results indicated, via the single equation Cm = Co (1 - exp-kt) simulating soil carbon potential, that the soil carbon emissions increased with temperature at different temperatures and forest types. The Q10 value range was 1.797–1.797 with different forest soil types and temperatures, and there was no significant difference in different forest soil Q10. This review has important implications for studies on forest type and temperature on soil carbon mineralization.
HTML 查看全文   查看/发表评论  下载PDF阅读器

您是本站第 69971909 位访问者

Copyright © 2005-2019   京ICP备06018880号
地址:北京海淀区双清路18号
  邮编:100085    电话:010-62941099
  E-mail : shengtaixuebao@rcees.ac.cn
本系统由北京勤云科技发展有限公司提供技术支持