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[1]FENG Lili,JIA Zhiqing,LIU Tao,et al.Comparative Study on Fine Roots Productivity and Turnover Rates of Several Typical Sand-Fixation Plants in Alpine Sandy Land[J].Research of Soil and Water Conservation,2018,25(02):120-125,130.

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Comparative Study on Fine Roots Productivity and Turnover Rates of Several Typical Sand-Fixation Plants in Alpine Sandy Land

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 02 Page number: 120-125,130 Column: Public date: 2018-04-03

Title:: Comparative Study on Fine Roots Productivity and Turnover Rates of Several Typical Sand-Fixation Plants in Alpine Sandy Land

Author(s):: FENG Lili^1,2,3, JIA Zhiqing^2,3, LIU Tao⁴, LI Qingxue^2,3, ZHANG Youyan^2,3, SHI Kun⁵, HE Lingxianzi^2,3, YANG Kaiyue^2,3; 1. School of Mining and Geomatics Engineering, Hebei University of Engineering, Handan, Hebei 056038, China;
2. Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China;
3. Qinghai Gonghe Desert Ecosystem Research Station, Gonghe, Qinghai 813005, China;
4. Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China;
5. College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China

Keywords:: sand-fixation plants; fine roots productivity; fine roots turnover rates; sequential soil coring method; alpine sandy land

CLC:: S718.5;S157.4

DOI:: -

Abstract:: Sequential coring method was used to collect the fine roots data from June to August in alpine sandy land. Turnover rates were calculated by maximum or mean biomass during the growing season in 2015 using Decision Matrix (DM) or maximum-minimum (MM) method. In vertical direction, fine roots mainly distribute in 0-40 cm soil layer. On moving sand dune, the fine roots turnover rates among species decreased in the sequence of Artemisia desertorum(mixed) > Artemisia desertorum > Caragana korshinskii > Caragana intermedia(mixed) > Caragana intermedia. Fine roots turnover rates of Artemisia desertorum are higher than those of Caragana intermedia and Caragana korshinskii on moving sand dune. On the interdune, the fine roots turnover rates among species deduced in the order:Salix psammophila > Salix microstachya > Salix cheilophila (mixed) > Populus simonii (mixed) > Salix cheilophila > Populus simonii. Fine roots turnover rates of Salix psammophila are higher than those of the other sand-fixation plants. Fine roots turnover rates of Populus simonii are the lowest. Mixed forest has more advantages compared to pure forest in alpine sandy land. This study is significant to provide a theoretical basis for nutrient cycling and carbon balance of fine roots in this region.

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