拉萨-林芝植被样带不同群落类型的细根生物量*

doi:10.11707/j.1001-7488.20091025

Scientia Silvae Sinicae ›› 2009, Vol. 12 ›› Issue (10): 148-151.doi: 10.11707/j.1001-7488.20091025

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Biomass of Fine Root in Different Community Type on the Tibetan Vegetation Transect

He Yongtao¹,Shi Peili¹,Xu Lingling²

1.Institute of Geographical Sciences and Natural Resources Research， CAS Beijing 100101； 2.National Meteorological Center of China Meteorological Administration Beijing 100081

Received:2008-04-18 Revised:1900-01-01 Online:2009-10-25 Published:2009-10-25
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Abstract

Abstract:

Fine root biomass was measured by soil core sampler in four community type on Tibetan Plateau， of which include two coppice of Betula platyphylla and Quercus aquifolioides， one shrub of Salix oritrepha， and one coniferous woodland of Pinus densata. The fine root density were Betula platyphylla of （785.9±290.4）　g·m^-2， Quercus aquifolioides of （801.0±279.5）　g·m^-2，Salix oritrepha of （376.0±146.0）　g·m^-2 and Pinus densata of （431.2±171.1）　g·m^-2. Result showed that the fine root density of two coppices was significantly higher than that of shrub and coniferous woodland. Dead fine root was 16.2% of the total fine root in Betula platyphylla， and the percentage were about 25% in other three type of forest. Distribution of fine root had the same pattern that high density of fine root appeared at 0～10 cm soil depth.

Key words: fine root, biomass, community type, vegetation transet, Tibetan Plateau

CLC Number:

He Yongtao;Shi Peili;Xu Lingling. Biomass of Fine Root in Different Community Type on the Tibetan Vegetation Transect[J]. Scientia Silvae Sinicae, 2009, 12(10): 148-151.

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Biomass of Fine Root in Different Community Type on the Tibetan Vegetation Transect

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