北京山地温带森林的土壤呼吸
Abstract
本文通过在北京山地３种温带森林中为期一年的观测，得到了土壤呼吸速率与地下５ｃｍ土壤温度之间的函数关系。据此并根据气象资料推算得到了白桦林、辽东栎林和油松林的年土壤呼吸量分别为１１３２ｇＣＯ２ｍ－２ａ－１，１４３ｇＣＯ２ｍ－２ａ－１和８６６ｇＣＯ２ｍ－２ａ－１。与国外同纬度地区相比，该地年土壤呼吸量偏低。结果还显示，土壤呼吸与地下５ｃｍ土壤温度的相关性好于与地表温度的相关性，并且水分含量对土壤呼吸也有影响。１９９４年秋季进行的昼夜连续观测表明，日土壤呼吸速率最高的时刻在中午１２：００～下午４：００，最低的时刻在黎明前５：００～６：００Similar works
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Last time updated on 18/12/2017
This paper was published in Institutional Repository of Research Center for Eco-Environmental Sciences, CAS.
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