气候变化领域集成服务门户(CCPortal): Impact of grassland degradation on soil multifunctionality: Linking to protozoan network complexity and stability

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DOI	10.1016/j.scitotenv.2024.172724
	Impact of grassland degradation on soil multifunctionality: Linking to protozoan network complexity and stability
	Hu, Yang; Zhang, Haolin; Sun, Xinya; Zhang, Bicheng; Wang, Yubin; Rafiq, Anum; Jia, Hongtao; Liang, Chao; An, Shaoshan
发表日期	2024
ISSN	0048-9697
EISSN	1879-1026
起始页码	929
卷号	929
英文摘要	Soil protozoa, as predators of microbial communities, profoundly influence multifunctionality of soils. Understanding the relationship between soil protozoa and soil multifunctionality (SMF) is crucial to unraveling the driving mechanisms of SMF. However, this relationship remains unclear, particularly in grassland ecosystems that are experiencing degradation. By employing 18S rRNA gene sequencing and network analysis, we examined the diversity, composition, and network patterns of the soil protozoan community along a well -characterized gradient of grassland degradation at four alpine sites, including two alpine meadows (Cuona and Jiuzhi) and two alpine steppes (Shuanghu and Gonghe) on the Qinghai -Tibetan Plateau. Our findings showed that grassland degradation decreased SMF for 1 -2 times in all four sites but increased soil protozoan diversity (Shannon index) for 13.82 -298.01 % in alpine steppes. Grassland degradation -induced changes in soil protozoan composition, particularly to the Intramacronucleata with a large body size, were consistently observed across all four sites. The enhancing network complexity (average degree), stability (robustness), and cooperative relationships (positive correlation) are the responses of protozoa to grassland degradation. Further analyses revealed that the increased network complexity and stability led to a decrease in SMF by affecting microbial biomass. Overall, protozoa increase their diversity and strengthen their cooperative relationships to resist grassland degradation, and emphasize the critical role of protozoan network complexity and stability in regulating SMF. Therefore, not only protozoan diversity and composition but also their interactions should be considered in evaluating SMF responses to grassland degradation, which has important implications for predicting changes in soil function under future scenarios of anthropogenic change.
英文关键词	Alpine grassland degradation; Soil multifunctionality; Protozoa; Network complexity; Network stability
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001233968600001
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299356
作者单位	Northwest A&F University - China; Xinjiang Agricultural University; Northwest A&F University - China; Chinese Academy of Sciences; Institute of Soil & Water Conservation (ISWC), CAS; Chinese Academy of Sciences; Institute of Soil & Water Conservation (ISWC), CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Chinese Academy of Sciences; Shenyang Institute of Applied Ecology, CAS
推荐引用方式 GB/T 7714	Hu, Yang,Zhang, Haolin,Sun, Xinya,et al. Impact of grassland degradation on soil multifunctionality: Linking to protozoan network complexity and stability[J],2024,929.
APA	Hu, Yang.,Zhang, Haolin.,Sun, Xinya.,Zhang, Bicheng.,Wang, Yubin.,...&An, Shaoshan.(2024).Impact of grassland degradation on soil multifunctionality: Linking to protozoan network complexity and stability.SCIENCE OF THE TOTAL ENVIRONMENT,929.
MLA	Hu, Yang,et al."Impact of grassland degradation on soil multifunctionality: Linking to protozoan network complexity and stability".SCIENCE OF THE TOTAL ENVIRONMENT 929(2024).