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Transformation From NHx to NOy Deposition Aggravated China's Forest Soil Acidification

文献类型：期刊论文

作者Zhang, Qiongyu; Zhu, Jianxing; Wang, Qiufeng; Mulder, Jan; Liu, Congqiang; He, Nianpeng
刊名GLOBAL BIOGEOCHEMICAL CYCLES
出版日期2023-06-06
卷号37期号:6页码:e2023GB007736
ISSN号1944-9224
关键词nitrogen deposition soil acidification nitrogen cycle global change
DOI10.1029/2023GB007736
产权排序2
文献子类Article
英文摘要Elevated nitrogen (N) deposition and changes in reduced or oxidized component contribution greatly affect soil acidification. China has experienced a significant transformation of N deposition components from NHx to NOy over the past 40 years, but the effects of component transformation on soil acidification are poorly understood. Therefore, long-term monitoring data and literature on N deposition, combined with the results of isotope experiments, were used to explore the contributions of different N forms on soil acidification in China's forests. Here, all processes related to NHx and NOy, including the transformation to NH4+ and NO3- and subsequent N cycling in the soil, were considered. We found that N-induced soil acidification in 80% area of China's forests was dominated by NHx deposition, and the other areas (South China) were dominated by NOy deposition in 2010s. From 1980 to 2019, the average contribution of NHx was higher than that of NOy but the latter contribution continued to increase. Meanwhile, the results showed that soil acidification increased with the decrease of the ratio of NHx to NOy (R-NHx/NOy), which is mainly because NOy is more easily leached in the form of NO3- than that of NHx under the influence of different plant preferences and soil retention rates, resulting in a higher net proton production of NOy. Our research has powerful implications for policymaking, provides a theoretical basis for formulating different N reduction policies in different regions, and points out that the synergistic effect of R-NHx/NOy changes should be considered to alleviate soil acidification.
学科主题Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
WOS关键词NITROGEN DEPOSITION ; ACID DEPOSITION ; EMISSIONS ; PATTERNS ; LOAD ; SO2
WOS研究方向Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
出版者AMER GEOPHYSICAL UNION
源URL[http://ir.igsnrr.ac.cn/handle/311030/193859]  
专题生态系统网络观测与模拟院重点实验室_外文论文
作者单位1.Institute of Geographic Sciences & Natural Resources Research, CAS
2.University of Chinese Academy of Sciences, CAS
3.Norwegian University of Life Sciences
4.Northeast Forestry University - China
5.Tianjin University
6.Chinese Academy of Sciences
推荐引用方式
GB/T 7714		 Zhang, Qiongyu,Zhu, Jianxing,Wang, Qiufeng,et al. Transformation From NHx to NOy Deposition Aggravated China's Forest Soil Acidification[J]. GLOBAL BIOGEOCHEMICAL CYCLES,2023,37(6):e2023GB007736.
APA Zhang, Qiongyu,Zhu, Jianxing,Wang, Qiufeng,Mulder, Jan,Liu, Congqiang,&He, Nianpeng.(2023).Transformation From NHx to NOy Deposition Aggravated China's Forest Soil Acidification.GLOBAL BIOGEOCHEMICAL CYCLES,37(6),e2023GB007736.
MLA Zhang, Qiongyu,et al."Transformation From NHx to NOy Deposition Aggravated China's Forest Soil Acidification".GLOBAL BIOGEOCHEMICAL CYCLES 37.6(2023):e2023GB007736.

入库方式： OAI收割

来源：地理科学与资源研究所

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