The Effect of Precipitation Increase on Topsoil Carbon and Nitrogen in an Alpine Meadow Ecosystem on the Tibetan Plateau

doi:10.13466/j.cnki.lyzygl.2018.06.016

Abstract

Abstract:

By control experiments of artificially increasing precipitation,we observe the response of topsoil (-10cm)total carbon (TC)and total nitrogen (TN) to precipitation increasing in the alpine meadow ecosystem.The results showed that the experiment with three years of five gradient precipitation increase treatments had no significant effect on surface TC/TN,but TN and TC has increase with the precipitation increase treatment of 40% and 80% in 2014 and 2015(P>0.05).There was an overall increase in $NH^{+}_{4}$-N in the topsoil (P>0.05) while $NO^{-}_{3}$ -N was decreased (P>0.05).The results showed that short term precipitation increase did not cause the significant change of TC/TN.

Key words: precipitation increase, soil carbon, soil nitrogen, alpine meadow, Tibetan Plateau

CLC Number:

S812.2

LI Fengzi, XU Ri. The Effect of Precipitation Increase on Topsoil Carbon and Nitrogen in an Alpine Meadow Ecosystem on the Tibetan Plateau[J]. FOREST RESOURCES WANAGEMENT, 2018, 0(6): 99-105.

Figures/Tables 4

References 41

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