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Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 506742
Title Imbalanced phosphorus and nitrogen deposition in China's forests
Author(s) Du, Enzai; Vries, Wim de; Han, Wenxuan; Liu, Xuejun; Yan, Zhengbing; Jiang, Yuan
Source Atmospheric Chemistry and Physics 16 (2016). - ISSN 1680-7316 - p. 8571 - 8579.
Department(s) Alterra - Sustainable soil management
Environmental Systems Analysis Group
Publication type Refereed Article in a scientific journal
Publication year 2016

Acceleration of anthropogenic emissions in China has substantially increased nitrogen (N) deposition during the last 3 decades and may result in an imbalance of atmospheric N and phosphorus (P) inputs in terrestrial ecosystems. However, the status of P deposition in China is poorly understood. This study synthesized data on total P and total N concentrations in bulk precipitation and throughfall from published literature to assess the characteristics of P deposition, N deposition and N:P deposition ratio in China's forests. Our results show relatively high mean rates of bulk P deposition (0.38kgPha-1yr-1) and total P deposition (0.69kgPha-1yr-1), but they were accompanied by even more elevated N inputs via bulk deposition (16.5kgNha-1yr-1) and total deposition (21.6kgNha-1yr-1), resulting in high N:P ratios in bulk deposition (44.4) and total deposition (32.8). Based on the difference between total deposition and bulk deposition, canopy-captured dry P and N deposition was estimated to be 0.31kgPha-1yr-1 and 5.1kgNha-1yr-1, respectively. We found significantly higher P deposition and lower N:P ratios at sites nearby than those far from semiarid regions. The estimated bulk and total deposition of P and N both showed a significant power-law increase with decreasing distance to the nearest large cities either in the areas nearby or far from semiarid regions. Our results suggest an anthropogenic alternation of regional P and N cycling, which may shift large areas of China's forests towards human-induced P limitation especially in southern China.

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