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福建武夷山黄山松群落的钾、钠累积与循环
Authors
刘初钿
李振基
+4 more
杨志伟
林益明
林鹏
金昌善
Publication date
15 June 1997
Publisher
Abstract
本文主要讨论武夷山黄山松群落的钾、钠累积和循环。测定结果表明:(1)群落现存量中钾、钠的库量分别为35.876g/m~2和2.637g/m~2,其中地上部分为19.944g/m~2(占总库量的55.59%)和1.817g/m~2(占68.90%);地下部分别为15.932g/m~2(占44.41%)和0.820g/m~2(占31.10%);(2)在钾、钠的生物循环中,年吸收量分别为2.230g/m~2·a和0.136g/m~2·a;年存留量分别为2.230g/m~2·a和0.036g/m~2·a;(3)钾的周转期55年,钠的周转期75年,钾的周转比钠快;(4)钾的富集率为1.160,说明该群落中林木仍在对钾吸收累积;而钠的富集率为0.929,说明了在该群落中林木对钠不再累积
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Last time updated on 16/06/2016