江西安福不同类型毛竹林地土壤微生物量碳特征研究
发布时间：2019-02-16 07:47
【摘要】：为了掌握毛竹林地土壤微生物量碳的动态变化特征,以江西省安福林区的毛竹纯林、竹阔混交林、竹杉混交林这3种不同类型毛竹林地作为研究对象,同时以中亚热带阔叶林和杉木纯林林地为对照,对其土壤微生物量碳(SMBC)含量的季节变化情况及其在各土层的剖面分布情况进行了研究。结果表明:不同类型毛竹林地的SMBC含量间差异较大,不同类型林地0~60 cm土层的SMBC含量平均值的大小顺序为竹阔混交林(157.62 mg·kg~(-1))毛竹纯林(143.17 mg·kg~(-1))竹杉混交林(110.19 mg·kg~(-1))阔叶林(101.07 mg·kg~(-1))杉木林(86.56 mg·kg~(-1));各林分类型的SMBC含量均表现出明显的季节差异,春季的SMBC含量均极显著高于其他季节;各林分类型其SMBC含量的平均值均随土层的加深而降低,其分布在各土层的含量间的差异均达到显著水平,说明土壤表层的积聚作用明显;毛竹林地的SMBC占土壤总有机碳(TOC)的比率为1.01%~1.11%,高于阔叶林地的0.67%和杉木林的0.79%;毛竹纯林、竹阔混交林和竹杉混交林的SMBC与TOC的相关系数分别为0.71、0.55和0.47。
[Abstract]:In order to understand the dynamic characteristics of soil microbial biomass carbon (MMC) in Phyllostachys pubescens forest, three different types of woolly bamboo forest, including pure bamboo forest, mixed bamboo and broad-leaved forest and mixed bamboo and fir forest in Anfu forest area of Jiangxi Province, were used as the research objects. The seasonal variation of soil microbial biomass carbon (SMBC) content and the distribution of soil microbial biomass carbon (SMBC) in different soil layers were studied in the middle subtropical broad-leaved forest and pure Chinese fir forest. The results showed that the content of SMBC in different types of bamboo forest was different. The order of average SMBC content in 0 ~ 60 cm soil layer of different types of woodland is bamboo and broad-leaved mixed forest (157.62 mg kg~ (-1), pure bamboo forest (143.17 mg kg~ (-1), bamboo and fir mixed forest (110.19 mg kg~ (-). 1) broadleaved forest (101.07 mg kg~ (-1) Cunninghamia lanceolata forest (86.56 mg kg~ (-1);) The SMBC content of all stand types showed obvious seasonal difference, and the SMBC content in spring was significantly higher than that in other seasons. The average value of SMBC content of each stand type decreased with the deepening of soil layer, and the difference of its distribution in each soil layer reached a significant level, which indicated that the accumulation of soil surface layer was obvious. The ratio of SMBC to soil total organic carbon (TOC) in Phyllostachys pubescens forest was 1.01%, which was higher than that in broadleaved forest (0.67%) and Cunninghamia lanceolata (0.79%). The correlation coefficients between SMBC and TOC in pure bamboo forest, broad-leaved mixed forest and bamboo-fir mixed forest were 0.71 and 0.47, respectively.
【作者单位】： 江西省林业科学院;江西省安福县武功山林场;国际竹藤中心;
【基金】：国家林业公益性行业科研专项(201404408) 国家“十二五”科技支撑计划项目(2012BAD23B04)
【分类号】：S795.7;S714.3
[Abstract]:In order to understand the dynamic characteristics of soil microbial biomass carbon (MMC) in Phyllostachys pubescens forest, three different types of woolly bamboo forest, including pure bamboo forest, mixed bamboo and broad-leaved forest and mixed bamboo and fir forest in Anfu forest area of Jiangxi Province, were used as the research objects. The seasonal variation of soil microbial biomass carbon (SMBC) content and the distribution of soil microbial biomass carbon (SMBC) in different soil layers were studied in the middle subtropical broad-leaved forest and pure Chinese fir forest. The results showed that the content of SMBC in different types of bamboo forest was different. The order of average SMBC content in 0 ~ 60 cm soil layer of different types of woodland is bamboo and broad-leaved mixed forest (157.62 mg kg~ (-1), pure bamboo forest (143.17 mg kg~ (-1), bamboo and fir mixed forest (110.19 mg kg~ (-). 1) broadleaved forest (101.07 mg kg~ (-1) Cunninghamia lanceolata forest (86.56 mg kg~ (-1);) The SMBC content of all stand types showed obvious seasonal difference, and the SMBC content in spring was significantly higher than that in other seasons. The average value of SMBC content of each stand type decreased with the deepening of soil layer, and the difference of its distribution in each soil layer reached a significant level, which indicated that the accumulation of soil surface layer was obvious. The ratio of SMBC to soil total organic carbon (TOC) in Phyllostachys pubescens forest was 1.01%, which was higher than that in broadleaved forest (0.67%) and Cunninghamia lanceolata (0.79%). The correlation coefficients between SMBC and TOC in pure bamboo forest, broad-leaved mixed forest and bamboo-fir mixed forest were 0.71 and 0.47, respectively.
【作者单位】： 江西省林业科学院;江西省安福县武功山林场;国际竹藤中心;
【基金】：国家林业公益性行业科研专项(201404408) 国家“十二五”科技支撑计划项目(2012BAD23B04)
【分类号】：S795.7;S714.3
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相关期刊论文 前10条
1 丁思一;佘济云;杨庆朋;汪思龙;;间伐和修枝对杉木人工林土壤微生物量碳和酶活性的影响[J];中南林业科技大学学报;2015年06期
2 朱琳琳;张萌新;赵z宴，
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