西藏色季拉山急尖长苞冷杉林生态系统的元素降水输入研究

doi:10.11707/j.1001-7488.20040103

Scientia Silvae Sinicae ›› 2004, Vol. 40 ›› Issue (1): 18-23.doi: 10.11707/j.1001-7488.20040103

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A Study on Inputs of Nutrients into Abies smithii Forest Ecosystem from Precipitation in Sejila Mountain in Tibet

Xin Xuebing,Wang Jingsheng,Zhai Mingpu

Forestry Research Institute, The Chinese Academy of Forestry Beijing100091；Institute of Plateau Ecology, Tibet Agriculture and Animal Husbandry College Linzhi860000；College of Resources and Environments, Beijing Forestry University Beijing100083

Received:2003-01-20 Revised:1900-01-01 Online:2004-01-25 Published:2004-01-25

Abstract

Abstract:

A study on precipitation in the Abies smithii forest ecosystem of Mountain Sejila in Tibet has been done in the year of 2000—2001. Contents of the nutrient elements and ions of precipitation have been analysed. The results showed: the content and input of nutrients from precipitation in the Abies smithii forest ecosystem of Mountain Sejila in Tibet were Zn >N >Mg >Fe >Ca >P >Na >K. The input quantities were 25.1、23.3、8.1、4.1、1.9、0.4、0.026、0.007 kg·hm^-2a^-1 respectively, and the input quantities of SO₄^2-、HCO₃^-and Cl^- were 742.6、74.3 and 51.6 kg·hm^-2a^-1 respectively. The main nutrient inputs were from rainfall. The main element in eluviations from forest canopy was the element Na, but that from tree trunks was the element P. The forest canopy possessed absorption capabilities upon the elements and/or ions of Fe, Zn, HCO₃^-, Cl^-, N, SO⁴^2-and so on.

Key words: Tibet, Abies smithii, Ecosystem, Nutrient inputs from precipitation

Xin Xuebing;Wang Jingsheng;Zhai Mingpu. A Study on Inputs of Nutrients into Abies smithii Forest Ecosystem from Precipitation in Sejila Mountain in Tibet[J]. Scientia Silvae Sinicae, 2004, 40(1): 18-23.

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A Study on Inputs of Nutrients into Abies smithii Forest Ecosystem from Precipitation in Sejila Mountain in Tibet

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