阔叶红松林不同演替系列土壤可溶性有机碳含量及影响因素  

Soluble Organic Carbon Content and Influencing Factors in DifferentSuccession Series of Broad-leaved Korean Pine Forests

作　　者：张东来 张玲 ZHANG Donglai;ZHANG Ling(Heilongjiang Ecology Institute,Harbin 150081,China;Forestry Research Institute of Heilongjiang Province,Harbin 150081,China)

机构地区：[1]黑龙江省生态研究所,哈尔滨150081 [2]黑龙江省林业科学研究所,哈尔滨150081

出　　处：《森林工程》2024年第2期10-16,共7页Forest Engineering

基　　金：国家自然科学基金资助项目(31270494,31600485);黑龙江省省属业务费项目(CZKYF20203013)。

摘　　要：为准确预测全球变化背景下中国小兴安岭地区森林生态系统碳汇动态、合理制定森林经营措施,以小兴安岭阔叶红松林不同演替系列典型群落为研究对象,采用时空替代法,探讨3个演替系列6种典型群落土壤可溶性有机碳含量及影响因素。结果表明,中生演替系列和旱生演替系列演替进程中土壤可溶性有机碳呈波动式趋势,0~10 cm层最大,10~20 cm层出现下降趋势,20~40 cm层后开始逐渐升高的趋势。湿生演替系列表现随土层的增加而降低的趋势。中生演替系列土壤可溶性有机碳积累与土壤毛管孔隙度呈正相关,与凋落物量呈显著正相关(P<0.05),与土壤全氮、全磷、全钾含量呈显著负相关(P<0.05)。湿生演替系列土壤可溶性有机碳与土壤含水率呈正相关,与土壤毛管孔隙度和凋落物量呈显著正相关(P<0.05),与土壤全氮含量呈显著负相关(P<0.05);旱生演替系列土壤可溶性有机碳与土壤毛管孔隙度、砂粒比、凋落物量、土壤全氮含量呈极显著负相关(P<0.01),与土壤全磷含量和土壤全钾含量呈极显著正相关(P<0.01)。In order to accurately predict the carbon sink dynamics of the forest ecosystem in the Xiaoxing'an Mountains region of China under the background of global change and formulate reasonable forest management measures,the typical communities of different succession series of the Xiaoxing'an Mountains broad-leaved Korean pine forest were seletcted as research object,the spatiotemporal substitution method was used to explore the soil soluble organic carbon content and influencing factors of six typical communities in three succession series.The results showed that the soil soluble organic carbon showed a fluctuating trend during the succession process of the mesoseres series and xeroseres series,with the maximum in the 0-10 cm layer,a decreasing trend in the 10-20 cm layer,and a gradually increasing trend after the 20-40 cm layer.The performance of the hydroseres succession series decreases with the increase of soil layer.The accumulation of soluble organic carbon in the soil of mesoseres succession series was positively correlated with soil capillary porosity,significantly positively correlated with litter volume(P<0.05),and significantly negatively correlated with soil total nitrogen,total phosphorus,and total potassium content(P<0.05).In the hydroseres series,there was a positive correlation between soil soluble organic carbon and soil moisture content,and a significant positive correlation with soil capillary porosity and litter(P<0.05),and a significant negative correlation with soil total nitrogen content(P<0.05).The soluble organic carbon in the soil of the xeroseres series was extremely significantly negatively correlated with soil capillary porosity,sand to particle ratio,litter volume,and total nitrogen content(P<0.05),while it was extremely significantly positively correlated with total phosphorus and total potassium content in the soil.

关 键 词：阔叶红松林 演替 可溶性有机碳 含量 影响因素 

分 类 号：S714.1[农业科学—林学]