气候变化领域集成服务门户(CCPortal): Effects of nitrogen and phosphorus addition on the mineralization potential of soil organic carbon and the corresponding regulations in the Tibetan alpine grassland

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DOI	10.1016/j.apsoil.2024.105314
	Effects of nitrogen and phosphorus addition on the mineralization potential of soil organic carbon and the corresponding regulations in the Tibetan alpine grassland
	Gao, Wenjing; Ma, Tian; Shi, Biwan; Yang, Zhiying; Li, Yifan; Zhu, Jianxiao; He, Jin-Sheng
发表日期	2024
ISSN	0929-1393
EISSN	1873-0272
起始页码	196
卷号	196
英文摘要	As a crucial property for assessing the stability of soil organic carbon (SOC), the mineralization potential of SOC (RSOC) is often considered vital for soil carbon (C) dynamics. Previous studies have investigated the responses of RSOC and the corresponding regulation of increased nitrogen (N) and phosphorus (P) inputs, among which, the response of RSOC would affect SOC accumulation directly, emphasizing the significance of investigating RSOC. Hence, based on a long-term nutrient addition experiment in a Tibetan alpine grassland, this study assessed RSOC using a 45 -day soil incubation experiment with 13C -glucose labeling method and explored the underlying mechanisms. The results demonstrated bacterial richness and diversity decreased in the topsoil due to the lower pH caused by the continuous N addition, whereas fungal richness and diversity had no significant change. And RSOC decreased with N addition in the topsoil because of suppressing the physiological process of microbes for N. Our results highlighted the crucial role of C availability (indicated by dissolved organic carbon) and N availability (indicated by total nitrogen) in controlling RSOC with long-term nutrient addition in the top- and subsoil, respectively. Overall, this study elucidated the impact of N and P addition on RSOC and offered the regulatory mechanisms of RSOC by considering soil, plant and microbial properties. These findings can serve as a basis for anticipating the changes in SOC dynamics in response to enhanced N and P deposition.
英文关键词	SOC; Microbial richness and diversity; Soil properties; N and P addition
语种	英语
WOS研究方向	Agriculture
WOS类目	Soil Science
WOS记录号	WOS:001179198000001
来源期刊	APPLIED SOIL ECOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/301276
作者单位	Lanzhou University; Lanzhou University
推荐引用方式 GB/T 7714	Gao, Wenjing,Ma, Tian,Shi, Biwan,et al. Effects of nitrogen and phosphorus addition on the mineralization potential of soil organic carbon and the corresponding regulations in the Tibetan alpine grassland[J],2024,196.
APA	Gao, Wenjing.,Ma, Tian.,Shi, Biwan.,Yang, Zhiying.,Li, Yifan.,...&He, Jin-Sheng.(2024).Effects of nitrogen and phosphorus addition on the mineralization potential of soil organic carbon and the corresponding regulations in the Tibetan alpine grassland.APPLIED SOIL ECOLOGY,196.
MLA	Gao, Wenjing,et al."Effects of nitrogen and phosphorus addition on the mineralization potential of soil organic carbon and the corresponding regulations in the Tibetan alpine grassland".APPLIED SOIL ECOLOGY 196(2024).