Productivity and turnover of fine roots in poplar tree and grass roots

Abstract

Abstract: The annual biomass,decomposition,growth and turnover of fine roots of poplar and grass roots (≤2.0 mm) in soil layer 0～40 cm were investigated in a northern poplar plantation.The results showed that annual biomass,dead root biomass,decomposition and growth of fine roots of poplar were 2.062,0.746,0.158,2.351t·hm^-2,respectively,and the turnover rate was 1.14 times per year.For grass,annual biomass,dead root biomass,decomposition and growth of roots were 0.501,0.035,0.023,0.691t·hm^-2,respectively,and the turnover rate was 1.38 times per year.Meanwhile the equation for dry weight loss of fine roots of poplar tree over time was presented as following:lnx/x₀=0.9515e-^00014t.

CLC Number:

S718.55

LI Peizhi, FAN Shihua, WANG Lihua, XU Siming . Productivity and turnover of fine roots in poplar tree and grass roots[J]. Chinese Journal of Applied Ecology, 2001, (6): 829-832.

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