EFFECT OF FROST ACTION AND STORAGE OF SOIL AT FREEZING TEMPERATURES ON THE FREE AMINO ACIDS, FREE SUGARS AND RESPIRATORY ACTIVITY OF SOIL
EFFECT OF FROST ACTION AND STORAGE OF SOIL AT FREEZING TEMPERATURES ON THE FREE AMINO ACIDS, FREE SUGARS AND RESPIRATORY ACTIVITY OF SOIL
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DOI：
10.4141/cjss70-027
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发表时间：
1970-06
影响因子：
1.7
通讯作者：
K. Ivarson;F. J. Sowden
中科院分区：
文献类型：
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作者：
K. Ivarson;F. J. Sowden
研究了冻土冻结和贮藏时间对游离氨基酸和游离糖的影响。冷冻导致提取的游离氨基酸和糖的总量显著增加。冻土区游离氨基酸和游离糖含量在贮藏6周内基本保持不变，贮藏6周后显著下降。单次冻融循环和多次冻融循环在本质上没有区别。总的来说，土壤呼吸和脱氢酶活性与可提取的游离氨基酸和糖的水平相当。
The effect of freezing and duration of storage of frozen soil on free amino acids and sugars was evaluated. Freezing caused a marked increase in the total amount of free amino acids and sugars extracted. The level of free amino acids and sugars, in frozen soil, remained fairly constant up to a storage period of 6 weeks, after which a prominent decrease occurred. Essentially there was no difference between single freeze-thaw and multiple freeze-thaw cycles. In general, soil respiration and dehydrogenase activity paralleled the level of extractable free amino acids and sugars.