| Land use change alters carbon and nitrogen dynamics mediated by fungal functional guilds within soil aggregates | |
Liu, Chenggang; Jin, Yanqiang ; Lin, Fangmei1; Jiang, Chuan1; Zeng, Xiaoling1; Feng, Defeng2; Huang, Fuzhao3,4; Tang, Jianwei
| |
| 2023 | |
| Source Publication | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| ISSN | 0048-9697 |
| Volume | 902Issue:xPages:- |
| Abstract | Land use change is one of the greatest threats to soil biodiversity and ecological functions; however, how such a transition affects soil carbon (C) and nitrogen (N) dynamics driven by fungal communities at the aggregate level remains unclear. Here, we explored the variation in soil C and N pools, specific enzyme activities and fungal communities and functional guilds within three aggregate sizes (megaaggregates, > 2 mm; macroaggregates, 0.25-2 mm; microaggregates, < 0.25 mm) in a natural forest, 12-and 24-year-old rubber monocultures and corresponding agroforestry systems in tropical China. Tropical forest conversion to rubber monocultures generally reduced C and N pools in all aggregates, while agroforestry systems decreased microbial biomass C and N. Carbon-and N-degrading enzyme activities responded differently to forest conversion and were enhanced in agroforestry systems. The levels of C and N pools and their related enzyme activities increased as the aggregate size decreased. Moreover, fungal compositional shifts in dominance from copiotrophic Ascomycota and Basidiomycota (r-strategists) into oligotrophic Zygomycota (K-strategists) were noted following forest conversion, resulting in more pathogenic fungi at the expense of saprotrophic and arbuscular mycorrhizal fungi. Pathogenic fungi were greatly inhibited due to abundant Mortierella after the establishment of 12-year-old agroforestry systems. The diversity of saprotrophic fungi was the highest in microaggregates. Regardless of land use type, aggregate-associated C and N pools, especially DOC, MBC, NO3?-N and DON in microaggregates, were interactively mediated by functional guilds of fungi, which was primarily driven by soil pH. These results highlight the importance of fungal functional guilds in determining C and N dynamics at the aggregate level and provide insights into the sustainable management of cash tree plantations. |
| Keyword | Fungal guilds Tropical forest conversion Specific enzyme activity Pathogenic fungi Agroforestry system |
| Subject Area | Environmental Sciences & Ecology |
| DOI | http://dx.doi.org/10.1016/j.scitotenv.2023.166080 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:001069585600001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/13827 |
| Collection | 2012年后新成立研究组 |
| Affiliation | 1.Chinese Acad Sci, CAS Key Lab Trop Plant Resources & Sustainable Use, Xishuangbanna Trop Bot Garden, Xishuangbanna 666303, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Forestry, Inst Highland Forest Sci, Kunming 650233, Peoples R China 4.Guangxi Inst Bot, Guangxi Key Lab Plant Conservat & Restorat Ecol Ka, Guilin 541006, Guangxi, Peoples R China 5.Chinese Acad Sci, Guilin 541006, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Chenggang,Jin, Yanqiang,Lin, Fangmei,et al. Land use change alters carbon and nitrogen dynamics mediated by fungal functional guilds within soil aggregates[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,902(x):-. |
| APA | Liu, Chenggang.,Jin, Yanqiang.,Lin, Fangmei.,Jiang, Chuan.,Zeng, Xiaoling.,...&Tang, Jianwei.(2023).Land use change alters carbon and nitrogen dynamics mediated by fungal functional guilds within soil aggregates.SCIENCE OF THE TOTAL ENVIRONMENT,902(x),-. |
| MLA | Liu, Chenggang,et al."Land use change alters carbon and nitrogen dynamics mediated by fungal functional guilds within soil aggregates".SCIENCE OF THE TOTAL ENVIRONMENT 902.x(2023):-. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Land use change alte（7129KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment