THE EFFECT OF TEMPERATURE AND LIMING ON THE DEGRADATION OF GLYPHOSATE IN 2 ARCTIC FOREST SOILS
THE EFFECT OF TEMPERATURE AND LIMING ON THE DEGRADATION OF GLYPHOSATE IN 2 ARCTIC FOREST SOILS
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DOI：
10.1016/0038-0717(89)90110-7
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发表时间：
1989-01-01
影响因子：
9.7
通讯作者：
HEINONENTANSKI, H
中科院分区：
文献类型：
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作者：
HEINONENTANSKI, H
降解14 C-标记的草甘膦在两个北极森林土壤模拟秋季和春季温度普遍的区域进行了研究。在15 ℃的初始土壤温度下，观察到在Hyatrium-Myrtillus型（HMT）土壤中草甘膦的快速初始降解（通过14 CO2释放测量）显著高于Myrtillus-Calluna-Cladina型-Empetrum-Myrtillus型（MCCIT-EMT）土壤。C.在1.9 - 15 ℃的范围内，两种土壤的降解都与温度有关。C.下降10度。C减少降解的十分之一和十五分之一的初始速率在MCCIT-EMT和HMT土壤，分别。在温度模拟培养结束时（217天），在研究的一系列土壤组分中检测到高水平的放射性。两种土壤的石灰导致HMT土壤的降解速率略有增加，但在整个培养过程中，石灰的效果并不显着，在任何土壤。
Degradation of 14C-labelled glyphosate was studied in two arctic forest soils under simulated autumn and spring temperatures prevalent for the region. A rapid initial degradation of glyphosate, as measured by 14CO2 evolution, was observed in a Hylocomium-Myrtillus type (HMT) soil which was significantly higher than in a Myrtillus-Calluna-Cladina type-Empetrum-Myrtillus type (MCCIT-EMT) soil at an initial soil temperature of 15.degree. C. Degradation was found to be temperature dependent in both soils, over a range of 1.9-15.degree. C. A decrease of 10.degree. C reduced the degradation to one-tenth and one-fifteenth of the initial rate in the MCCIT-EMT and HMT soils, respectively. At the end of the temperature simulated incubation (217 days) high levels of radioactivity were detected in a range of soil fractions studied. Liming of both soils resulted in a slight initial increase in degradation rate for the HMT soil, but throughout the incubation the effect of liming was not significant in either soil.