文献类型：期刊文献

英文题名：Response of plant-bacteria-soil system to phosphorus addition under simulated nitrogen deposition: evidence from a dryland ecosystem

作者：Fang, Zhao[1,2] Yu, Hailong[3] Wang, Bin[4] Jiao, Feng[1,5,6] Huang, Juying[2,7,8]

第一作者：Fang, Zhao

通信作者：Jiao, F[1];Huang, JY[2];Jiao, F[3];Jiao, F[4];Huang, JY[5];Huang, JY[6]

机构：[1]Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China;[2]Ningxia Univ, Sch Ecol & Environm, Yinchuan 750021, Peoples R China;[3]Ningxia Univ, Sch Geog & Planning, Yinchuan 750021, Peoples R China;[4]Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang 311400, Peoples R China;[5]Chinese Acad Sci, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China;[6]Minist Water Resource, Yangling 712100, Shaanxi, Peoples R China;[7]Breeding Base State Key Lab Land Degradat & Ecol R, Yinchuan 750021, Ningxia, Peoples R China;[8]Minist Educ, Key Lab Restorat & Reconstruct Degraded Ecosyst No, Yinchuan 750021, Ningxia, Peoples R China

年份：2023

外文期刊名：PLANT AND SOIL

收录：;Scopus(收录号：2-s2.0-85159695440);WOS:【SCI-EXPANDED(收录号:WOS:000990983800002)】；

基金：AcknowledgementsFunding for this work was provided by the Natural Science Foundation of Ningxia (2022AAC02012) and the National Natural Science Foundation of China (32160277 and 41961001).

语种：英文

外文关键词：N and P addition; Soil bacterial diversity; Plant community composition; HiSeq sequencing; Desert steppe

摘要：AimsIncreased atmospheric nitrogen (N) deposition can alter plant growth and soil properties, thereby exerting many potential effects on soil microbial diversity and functionality. However, how phosphorus (P) addition regulates the responses of the plant-soil-microbe system to N deposition in dryland ecosystems remains unclear.MethodsTwo-year nutrient addition experiments, i.e., P addition rates ranging from 0 to 16 g P m(-2) yr(-1) combined with 5 g N m(-2) yr(-1), were performed to determine the effects on plant traits, soil properties, and bacterial communities in an alkaline desert steppe of Northwest China.ResultsUnder 5 g N center dot m(-2)center dot yr(-1), the low-dose of P addition rates (< 2 g m(-2) yr(-1)) can help maintain higher aboveground biomass and diversity. A C-3 herb (Artemisia scoparia) became progressively dominant with increasing P rates, accompanied by the loss of Fabaceae and Amaranthaceae species. Moreover, increased P rates had important implications for plant nutrient characteristics and soil properties under simulated N deposition. Notably, the alpha-diversity and structure of the soil bacterial community exhibited no significant response to nutrient addition, suggesting that the bacterial community was more resistant to nutrient addition than the plant community, which was relatively more sensitive. Furthermore, the bacterial community composition was jointly influenced by plant traits and soil properties.ConclusionsOur results suggest that dryland prokaryotic microbes are more resistant to P addition under simulated N deposition than plant communities.