长白山两种森林类型土壤颗粒有机碳和黑碳分布特征

发布时间：2018-05-12 13:57

本文选题：颗粒态有机碳 + 黑碳　；参考：《林业科学研究》2017年02期

【摘要】：[目的]量化长白山原始阔叶红松林和杨桦次生林土壤颗粒有机碳和黑碳含量及分布特征,为研究东北森林土壤有机碳分布和积累提供依据。[方法]采用粒径分组方法测定原始阔叶红松林和杨桦次生林土壤表层(A_(11))和亚表层(A_(12))颗粒有机碳(POC)和黑碳(BC)含量,分析其与土壤基本性质(有机质、含水量、p H值、粘粒和团聚体等)的关系。[结果]表明:(1)两种森林类型土壤A_(11)和A_(12)POC含量分别为31.89 88.00、5.25 19.45 g·kg~(-1),BC含量分别为8.43 22.40、3.39 12.10 g·kg~(-1),二者随土壤深度增加而显著下降(p0.01)。(2)森林类型显著影响土壤POC和BC,表现为杨桦次生林原始阔叶红松林。(3)两种森林类型土壤POC与土壤有机质、含水量、水稳性团聚体均显著相关,与p H值、粘粒相关性不显著;BC与土壤p H值、粘粒和团聚体相关性均不显著,与含水量显著相关,与有机质仅在A_(11)显著相关。(4)土壤POC和BC显著相关(p0.01)。[结论]在长白山地区森林类型显著影响土壤POC和BC含量,杨桦次生林土壤POC和BC显著高于原始阔叶红松林,很大程度上与森林的采伐和火烧有关。两种森林类型土壤POC和BC分布格局是土壤物理化学性质综合作用的结果。
[Abstract]:[objective] to quantify the soil particulate organic carbon (SOC) and black carbon (SOC) content and distribution characteristics in the primary broad-leaved Pinus koraiensis and Betula platyphylla secondary forests in Changbai Mountain, so as to provide a basis for the study of soil organic carbon distribution and accumulation in Northeast China. [methods] the particle size grouping method was used to determine the contents of organic carbon (POC) and black carbon (BCC) in the soil surface of Pinus koraiensis and Betula platyphylla secondary forests, and to analyze their relationship with the basic properties of soil (organic matter, water content and pH value). The relationship between clay particles and aggregates, etc. [results] the results showed that the contents of A_(12)POC in two forest types were 31.89 88.005.25 19.45 g 路kg ~ (-1) 路kg ~ (-1), 8.43 22.40 ~ 3.39 ~ (12. 10) g 路kg ~ (-1) 路kg ~ (-1), respectively, and decreased significantly with the increase of soil depth. 2) the forest types significantly affected soil POC and BC, as shown by Betula platyphylla second time. Soil POC and soil organic matter of two forest types, I. E. broadleaved Pinus koraiensis forest. Water content, water stable aggregate were significantly correlated with pH, clay had no significant correlation with soil pH, clay and aggregate had no significant correlation with water content. Soil POC and BC were significantly correlated with organic matter only in Atii (11). (4) soil POC and BC were significantly correlated with P0.01C (P < 0.01). [conclusion] in Changbai Mountain area, the content of POC and BC in soil was significantly affected by forest types, and the POC and BC in the secondary forest of Betula platyphylla was significantly higher than that in the original broad-leaved Korean pine forest, which was related to the cutting and burning of the forest to a great extent. The distribution patterns of POC and BC in soil of two forest types are the result of comprehensive physical and chemical properties of soil.
【作者单位】：东北林业大学;
【基金】：国家科技支撑计划项目(2011BAD37B01) 国家重点基础研究发展计划项目(2011CB403202)资助
【分类号】：S714

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