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抚育强度对云杉林土壤有机碳含量的影响

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笔者分析了川西米亚罗林区典型低效林经不同强度的抚育间伐后，对5种处理的2个土层（0 cm～15 cm，15 cm～30 cm）的土壤总有机碳、微生物量碳含量的变化进行了动态监测，并分析了土壤总有机碳和微生物量碳含量的季节变化。结果表明，5种处理的土壤总有机碳和微生物量碳含量均是上层高于下层；在观测的4个季节内，上层、下层土壤总有机碳均是夏季＞春季＞冬季＞秋季，土壤总有机碳含量的上、下层均值是F3＞F2＞F1＞F4＞CK；土壤微生物量碳含量均是秋季＞冬季＞春季＞夏季；土壤微生物量碳含量的上、下层均值表现为F3＞F2＞F1＞CK＞F4，而且30％的间伐强度样地土壤总有机碳含量和微生物量碳含量均最高。
Impact of Thinning Scheme on Soil Organic Carbon in Spruce Forest
This paper monitored and analyzed the seasonal dynamic change of total organic C ,microbial biomass C in soil in 2 soil layers (0 cm~15 cm, 15 cm~30 cm) after 5 different thinning schemes in Western Sichuan Miyaluo typical ineffi-cient forest area .The results showed that soil total organic carbon and microbial biomass carbon content after 5 thinning schemes were the upper higher than the lower .Observed in four seasons , in the upper and lower soil , total organic carbon both were summer>spring>winter>autumn, the mean total organic carbon content in the soil was F 3>F2>F1>F4>CK.Soil microbial biomass carbon content were autumn >winter>spring>summer.In upper and lower soil , mean soil mi-crobial biomass carbon content was F 3>F2>F1>CK>F4, and the carbon content of soil was the highest in 30%thinning schemes sample plot .

Picea asperrataThinning schemesSoil total organic carbonMicrobial biomass carbonSeasonal change

郝凯婕

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山西省林业科学研究院，山西 太原 030012

云杉 抚育间伐强度 土壤总有机碳 微生物量碳 季节变化

山西省科技攻关项目

20120311014-2

2014

山西林业科技
山西省林业科学研究院,山西省林学会

山西林业科技

影响因子：0.259
ISSN：1007-726X
年,卷(期)：2014.(3)
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