Atmospheric deposition and leaching of nitrogen in Chinese forest ecosystems

• DOI: 10.1007/s10310-011-0267-4
• Publication Date: 2011-08-17T10:13:18Z
• Authors: Yunting Fang; Per Gundersen; Rolf D. Vogt; Keisuke Koba; Fusheng Chen; Xi Yun Chen; Muneoki Yoh
• Keywords: Deposition; Terrestrial ecosystem; Tree canopy

AbstractData have been compiled from published sources on nitrogen (N) fluxes in precipitation, throughfall, and leaching 69 forest ecosystems at 50 sites throughout China, to examine a national level: (1) N input precipitation (2) how changes after the interaction with canopy, (3) whether increases increasing deposition and, if so, what extent. The of dissolved inorganic (DIN) ranged 2.6 48.2 kg ha−1 year−1, an average 16.6 year−1. Ammonium was dominant form most sites, accounting for, average, 63% total deposition. Nitrate accounted for remaining 37%. On DIN increased through canopies, by 40% 34% broad-leaved coniferous forests, respectively. No significant difference throughfall inputs found between two types. Overall, 22% leached which is lower than 50–59% observed European forests. Simple calculations indicate that Chinese forests great potential absorb carbon dioxide atmosphere, because large area high deposition.Keywords: Carbon sequestrationChinese forestsNitrogen depositionNitrogen leachingNitrogen retention AcknowledgmentsThis work supported National Natural Science Foundation China (nos 40703030 30972365), Grant-in-Aid Scientific Research Japan Society Promotion (JSPS) (no. 21310008), Key laboratory vegetation restoration management degraded ecosystems, South Botanical Garden, Academy Sciences. Y.T. Fang JSPS Postdoctoral Fellowship Foreign Researchers grant-in-aid Fellows 20–08421). P. Gundersen received support Villum Foundation, Denmark. We acknowledge Qiaojun Chen drawing Fig. 1. thank anonymous reviewers their helpful comments advice.NotesElectronic supplementary material online version this article (doi:10.1007/s10310-011-0267-4) contains material, available authorized users.