Effect of N deposition on the home-field advantage of wood decomposition in a subtropical forest
Effect of N deposition on the home-field advantage of wood decomposition in a subtropical forest
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氮沉降对亚热带森林木材分解主场优势的影响
DOI：
10.1016/j.ecolind.2022.109043
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发表时间：
2022-07
影响因子：
6.9
通讯作者：
Liu Yuanqiu
中科院分区：
文献类型：
--
作者：
Wu Chunsheng;Shu Chunjie;Zhang Zhijian;Zhang Yi;Liu Yuanqiu
氮可以通过改变微生物和动物群落的丰度和活性来影响森林生态系统的功能。氮沉降对枯木分解的主场优势（HFA）效应的影响尚不清楚。在中国亚热带地区的人类氮沉降量最高的地区，以化香林和柳杉林为研究对象，进行了为期24个月的田间相互木材运输试验，研究了3种氮沉降水平（对照（N 0）、60（N1）和120（N2）kg N ha-1 yr-1）对植物生长的影响。利用不同尺寸的网袋划分了土壤生物群对HFA效应的影响。我们发现N1通过提高木材动物和微生物群落丰度以及土壤细胞外酶活性来促进木材分解。然而，N2促进木材分解粗网眼袋吸引更多的动物和细网眼袋增加真菌的生长。在对照（CK）治疗，我们发现一个4.55倍以上的HFA效果在细网眼袋比粗网眼袋。平均而言，6.6和4.8倍以上的HFA效果观察N1治疗比N2和对照治疗，分别，这些差异与更大的差异，在微生物和动物群落之间的家庭和客场。总之，我们的研究结果表明，低水平的人为N富集可以增加HFA对木材分解的影响，通过修改木材分解过程中的微生物和动物群落，从而影响C封存，在亚热带地区的森林在未来几十年达到碳排放峰值和碳中和。
Nitrogen (N) can influence the functions of forest ecosystems by altering the abundance and activity of microbial and faunal communities. The impact of N deposition on the home-field advantage (HFA) effect of dead wood decomposition remains unclear. In this study, a 24-month field reciprocal wood translocation experiment was conducted with three levels of N deposition (control (N0), 60 (N1) and 120 (N2) kg N ha−1yr−1) in bothPlatycarya strobilacea(PL) forest andCryptomeria japonica(CR) forest in subtropical China, where anthropogenic N deposition is among the highest in the world. The influence of soil biota groups on the HFA effect was partitioned using different sizes of mesh bags. We found that N1 facilitated wood decomposition by enhancing wood faunal and microbial community abundance and soil extracellular enzyme activity. However, N2 promoted wood decomposition in coarse-mesh bags by attracting more fauna and in fine-mesh bags by increasing fungal growth. In the control (CK) treatments, we found a 4.55-fold greater HFA effect in fine-mesh bags than in coarse-mesh bags. On average, a 6.6- and 4.8-fold greater HFA effect was observed with N1 treatment than with N2 and control treatments, respectively, and these differences were associated with greater differences in microbial and faunal communities between home and away fields. In summary, our results indicated that low levels of anthropogenic N enrichment could increase the HFA effect on wood decomposition through the modification of microbial and faunal communities in the wood decomposition process and thereby influence C sequestration, with peak carbon emissions and carbon neutrality reached in the next few decades in the forests of subtropical regions.
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DOI：
10.1038/ismej.2011.159
发表时间：
2012-05
期刊：
The ISME journal
影响因子：
--
作者：
通讯作者：
--
影响因子：
4.9
作者：
Keiser, A. D.;Strickland, M. S.;Bradford, M. A.
通讯作者：
Bradford, M. A.
影响因子：
3.7
作者：
Chunsheng Wu;Zhijian Zhang;Hankun Wang;Guoxian Huang;Chunjie Shu;Fanqian Kong;Yi Zhang;G. Wang;Yuan-qiu Liu
通讯作者：
Chunsheng Wu;Zhijian Zhang;Hankun Wang;Guoxian Huang;Chunjie Shu;Fanqian Kong;Yi Zhang;G. Wang;Yuan-qiu Liu
影响因子：
2.7
作者：
Bebber, Daniel P.;Watkinson, Sarah C.;Darrah, Peter R.
通讯作者：
Darrah, Peter R.
DOI：
10.1073/pnas.1502956112
发表时间：
2015-06-02
影响因子：
11.1
作者：
Crowther, Thomas W.;Thomas, Stephen M.;Bradford, Mark A.
通讯作者：
Bradford, Mark A.