Vertical Changes of the Soil Microbial Biomass and the Correlation Analysis in Different Forests
Vertical Changes of the Soil Microbial Biomass and the Correlation Analysis in Different Forests
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不同森林土壤微生物量垂直变化及相关分析
DOI：
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发表时间：
2007
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通讯作者：
Wang Li
中科院分区：
文献类型：
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作者：
Wang Li
以格氏栲天然林（NF）、格氏栲人工林（CK）和杉木人工林为研究对象，研究了土壤微生物生物量及其相关因子（Cunninghamia lanceolata，CF）在福建三明，结果表明：3种林分的微生物量碳、氮含量均符合NFCKCF的规律，随着土壤深度的增加，微生物量碳、氮含量逐渐降低，不同林分在0~10 cm土层差异显著，（1.502± 0.16，0.27 ±0.031 g/kg）分别是对照的1.46和1.57倍（1.035± 0.103，0.172 ±0.018 g/kg），分别是对照组的1.83和1.84倍（0.82±0.076，0.147±0.016克/千克）土壤剖面中微生物生物量与土壤pH值和容重呈负相关，与土壤微生物生物量呈显著正相关土壤微生物生物量与DOC、全N、全P、水解N、速效P之间差异不显著（P0. 05）。
In this paper,the soil microbial biomass and relative factors were studied of a natural forest of Castanopsis kawakamii(NF),adjacent monoculture plantations of C.kawakamii(CK) and Chinese fir(Cunninghamia lanceolata, CF) in Sanming,Fujian,China.The results show as follows.The three forests followed the order of NFCKCF as to their contents of the microbial biomass carbon and nitrogen.They decreased with the increase of soil depth and were significantly different at 0～10 cm layer for each forest.Microbial biomass C and N at top 10 cm soil in the NF(1.502±0.16,0.27±0.031 g/kg) were respectively 1.46 and 1.57 times higher than those in the CK(1.035±0.103,0.172±0.018 g/kg),and 1.83 and 1.84 times higher than in the CF(0.82±0.076,0.147±0.016 g/kg).Microbial biomass in soil profile showed a negative correlation with the soil pH value and bulk density while a significant positive correlation was found with the contents of soil organic carbon,light fraction and particulate organic carbon,and fine root biomass(P0.05 or P0.01).There was no significant difference between the soil microbial biomass and DOC,total N,total P,hydrolyzable N and available P.There was no significant difference between the soil microbial biomass and DOC,total N,total P,hydrolyzable N and available P(P0.05).