Nitrogen fertilization reduces plant diversity by changing the diversity and stability of arbuscular mycorrhizal fungal community in a temperate steppe

被引：14

作者：

Zhang, Cunzhi ^{[1
,2
]}

Xiang, Xingjia ^{[3
]}

Yang, Teng ^{[1
,2
]}

Liu, Xu ^{[1
,2
]}

Ma, Yuying ^{[1
,2
]}

Zhang, Kaoping ^{[4
]}

Liu, Xuejun ^{[5
]}

Chu, Haiyan ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, 71 East Beijing Rd, Nanjing 210008, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Anhui Univ, Sch Resources & Environm Engn, Anhui Prov Key Lab Wetland Ecosyst Protect & Resto, Hefei, Peoples R China

[4] Chinese Acad Sci, CAS Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Peoples R China

[5] China Agr Univ, Natl Acad Agr Green Dev, Coll Resources & Environm Sci, State Key Lab Nutrient Use & Management SKL NUM, Beijing 100193, Peoples R China

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2024年 / 918卷

基金：

中国国家自然科学基金;

关键词：

N deposition; AMF richness; AMF network stability; Plant species richness; ECOSYSTEM STABILITY; BACTERIAL COMMUNITY; SOIL BIODIVERSITY; GLOBAL CHANGE; N ENRICHMENT; DEPOSITION; RESPONSES; COMPETITION; GRASSLANDS; NETWORKS;

D O I：

10.1016/j.scitotenv.2024.170775

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Nitrogen (N) deposition resulting from anthropogenic activities poses threats to ecosystem stability by reducing plant and microbial diversity. However, the role of soil microbes, particularly arbuscular mycorrhizal fungi (AMF), as mediators of N-induced shifts in plant diversity remains unclear. In this study, we conducted 6 and 11 years of N addition field experiments in a temperate steppe to investigate AMF richness and network stability and their associations with plant species richness in response to N deposition. The N fertilization, especially in the 11 years of N addition, profoundly decreased the AMF richness and plant species richness. Furthermore, N fertilization significantly decreased the AMF network complexity and stability, with these effects becoming more enhanced with the increase in N addition duration. AMF richness and network stability showed positive associations with plant diversity, and these associations were stronger after 11 than 6 years of N addition. Our findings suggest that N deposition may lead to plant diversity loss via a reduction of AMF richness and network

引用

页数：11