ISWC OpenIR  > 水保所知识产出(1956---)
围封年限对内蒙古草地甲烷氧化菌氧化能力的影响
马田莉1; 陈 槐1,2; 康晓明3; 王艳芬4
2016
Source Publication应用与环境生物学报
Volume22Issue:1Pages:8-12
Abstract

在全球变暖的背景下,内蒙古草地吸收甲烷的功能也会随之发生变化,而甲烷氧化菌的氧化能力是影响吸收
甲烷的重要因素. 选择内蒙古锡林河流域附近的典型草地,研究不同围封年限甲烷氧化菌的氧化能力及对不同温度梯
度的响应. 3个样地分别为从1979年开始围封的草地(79E)、从1999年开始围封的草地(99E)和自由放牧草地(G). 通
过不同温度条件下室内培养获得3个样地甲烷氧化菌的氧化活性并且计算出3个样地甲烷氧化菌活性对温度的敏感性
(Q 10 ). 结果显示:18 ℃时3个样地甲烷氧化菌的活性分别是0.032、0.012、0.024 μg g -1 h -1 ;28 ℃时3 个样地甲烷氧化菌
的活性分别是0.042、0.031、0.055 μg g -1 h -1 . 79E的Q 10 值最低,99E的Q 10 值最低. 在3个样地中,温度越高,甲烷氧化菌的
氧化活性越强. 通过对甲烷氧化菌氧化潜能的计算以及和原位通量数据的比较可以看出,甲烷氧化菌的氧化潜能显著
高于原位通量数据,说明在未来全球变暖的情况下,草地作为大气甲烷汇的功能也会增强. (图4 表1 参32)

Other Abstract

This study aimed to investigate the methanotrophic activity and its response to global warming with different
enclosure time. We chose typical grasslands in Xilin River Basin of Inner Mongolia, China to investigate the methanotrophic
activity at 18 °C and 28 °C under different enclosure treatments: 79E (grassland enclosed since 1979), 99E (grassland enclosed
since 1999) and G (freely-grazed grassland). The main methods included laboratory incubation experiment and the collection
of CH 4 fl ux data. The results showed that at 18 °C, the methanotrophic activity was 0.032 μg g -1 h -1  for 79E, 0.0 12 μg g -1 h -1  for
99E, and 0.024 μg g -1 h -1 for G. At 28 °C, the methanotrophic activity was 0.042 μg g -1 h -1 , 0.031 μg g -1 h -1 and 0.055 μg g -1 h -1 ,
respectively. The methanotrophic activity of 79E was found to have the lowest sensitivity to temperature change, while 99E had
the highest one. The methanotrophic activity in all three treatments increased along with the temperature. Taking into account
the methanotrophs potential and comparing the in situ CH 4 fl uxes, we concluded that grassland can remove more CH 4 under the
future global warming trend.

Keyword草地 内蒙古 围封 甲烷氧化菌 氧化活性 q 10
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8669
Collection水保所知识产出(1956---)
Affiliation1.西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室 杨凌 71210 0
2.中国科学院成都生物研究所山地生态恢复与生物资源利用重点实验室 成都 610041
3.中国林业科学研究院湿地研究所 北京 10009 1
4.中国科学院大学 北京 100049
Recommended Citation
GB/T 7714
马田莉,陈 槐,康晓明,等. 围封年限对内蒙古草地甲烷氧化菌氧化能力的影响[J]. 应用与环境生物学报,2016,22(1):8-12.
APA 马田莉,陈 槐,康晓明,&王艳芬.(2016).围封年限对内蒙古草地甲烷氧化菌氧化能力的影响.应用与环境生物学报,22(1),8-12.
MLA 马田莉,et al."围封年限对内蒙古草地甲烷氧化菌氧化能力的影响".应用与环境生物学报 22.1(2016):8-12.
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