森林土壤氧化亚氮排放对大气氮沉降增加的响应研究进展

被引：18

作者：

方华军 ^{[1
]}

程淑兰 ^{[2
]}

于贵瑞 ^{[1
]}

王永生 ^{[1
]}

徐敏杰 ^{[2
]}

党旭升 ^{[1
]}

李林森 ^{[2
]}

王磊 ^{[1
]}

李晓玉 ^{[1
]}

司高月 ^{[2
]}

机构：

[1] 中国科学院地理科学与资源研究所生态系统观测与模拟重点实验室

[2] 不详

来源：

土壤学报 | 2015年 / 52卷 / 02期

关键词：

大气氮沉降; 氧化亚氮排放; 硝化细菌; 反硝化细菌; 同位素标记; 分子生物学;

D O I：

暂无

中图分类号：

S714 [森林土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

森林土壤N2O来源于土壤氮素的氧化还原反应,硝化、反硝化、硝化细菌反硝化以及化学反硝化是其产生的四个关键过程。当前,氮素富集条件下森林土壤N2O排放存在硝化和反硝化主导作用之争,对大气氮沉降增加的响应模式以及微生物驱动机制尚不清楚。综述了森林土壤N2O来源的稳定性同位素拆分,森林土壤总氮转化和N2O排放对增氮的响应规律,增氮对N2O产生菌群落活性和组成的影响,并指出研究的薄弱环节与未来的研究重点。总体而言,森林土壤N2O排放对大气氮沉降增加的响应呈现非线性,包括初期无明显响应、中期缓慢增加和后期急剧增加三个阶段,取决于森林生态系统"氮饱和"程度。施氮会引起森林土壤有效氮由贫氮向富氮的转变,相应地改变了土壤硝化细菌和反硝化细菌群落丰度与组成,进而影响土壤N2O排放。由于森林土壤N2O排放监测、土壤总氮转化和N2O产生菌群落动态研究多为独立进行的,难以阐明微生物功能群与N2O排放之间的耦合关系。未来研究应该有机结合15N-18O标记和分子生物学技术,准确量化森林土壤N2O的来源,揭示森林土壤N2O排放对增氮的非线性响应机理。

引用

页码：262 / 271

页数：10

共 36 条

[1] 稻田生态系统CH4和N2O排放[M]. 中国科学技术大学出版社 , 蔡祖聪, 2009
[2] Inventories and scenarios of nitrous oxide emissions
Davidson, Eric A.
Kanter, David
[J]. ENVIRONMENTAL RESEARCH LETTERS, 2014, 9 (10):
[3] Liebig’s law of the minimum applied to a greenhouse gas: alleviation of P-limitation reduces soil N 2 O emission[J] . B. R. Baral,T. W. Kuyper,J. W. Van Groenigen.Plant and Soil . 2014 (1-2)
[4] Nitrogen mineralization, immobilization turnover, heterotrophic nitrification, and microbial groups in acid forest soils of subtropical China[J] . Tongbin Zhu,Tianzhu Meng,Jinbo Zhang,Yunfeng Yin,Zucong Cai,Wenyan Yang,Wenhui Zhong.Biology and Fertility of Soils . 2013 (3)
[5] Responses of nitrous oxide fluxes and soil nitrogen cycling to nutrient additions in montane forests along an elevation gradient in southern Ecuador[J] . Guntars O. Martinson,Marife D. Corre,Edzo Veldkamp.Biogeochemistry . 2013 (1)
[6] Nitrification, ammonia-oxidizing communities, and N 2 O and CH 4 fluxes in an imperfectly drained agricultural field fertilized with coated urea with and without dicyandiamide[J] . Hiroko Akiyama,Sho Morimoto,Masahito Hayatsu,Atsushi Hayakawa,Shigeto Sudo,Kazuyuki Yagi.Biology and Fertility of Soils . 2013 (2)
[7] Contribution of nitrification and denitrification to nitrous oxide emissions in Andosol and from Fluvisol after coated urea application
Uchida, Yoshitaka
von Rein, Isabell
Akiyama, Hiroko
Yagi, Kazuyuki
[J]. SOIL SCIENCE AND PLANT NUTRITION, 2013, 59 (01) : 46 - 55
[8] Seasonal nitrous oxide emissions from different land uses and their controlling factors in a tropical riparian ecosystem[J] . Boonlue Kachenchart,Davey L. Jones,Nantana Gajaseni,Gareth Edwards-Jones,Atsamon Limsakul.Agriculture, Ecosystems and Environment . 2012
[9] Nitrogen availability links forest productivity, soil nitrous oxide and nitric oxide fluxes of a tropical montane forest in southern Ecuador[J] . Wolf, Katrin,Veldkamp, Edzo,Homeier, Juergen,Martinson, Guntars O..Global Biogeochemical Cycles . 2011 (4)
[10] Fluxes and production pathways of nitrous oxide in different types of tropical forest soils in Thailand
Vanitchung, Supika
Conrad, Ralf
Harvey, Narumon W.
Chidthaisong, Amnat
[J]. SOIL SCIENCE AND PLANT NUTRITION, 2011, 57 (05) : 650 - 658

← 1 2 3 4 →