生态学报2017，Vol.37Issue(19)：6370-6378,9.DOI:10.5846/stxb201607111415
中国温带阔叶红松林不同演替系列土壤有机碳矿化特征
Characteristic mineralization of soil organic carbon in different successional series of broadleaved Korean pine forests in the temperate zone in China
摘要
Abstract
The soil carbon cycle and global climate change are closely related to the mineralization of carbon in terrestrial ecosystems.To accurately assess the characteristics of carbon mineralization and variation in the mineralization of carbon in different succession series (mesosere series,hydrosere series,and xerosere series) in the broadleaved Korean pine forests of the Xiaoxing'an Mountains in the temperate zone of China,we measured the mineralization of carbon and the mineralization rate based on the chronosequence method.The results showed that the carbon mineralization rate and the extent of carbon mineralization in the three successional series exhibited consistent cross-sectional variation,and gradually decreased with depth.The extent of carbon mineralization in the different successional series was different.The virgin forest accumulated soil organic carbon and mineralization in the mesosere was the greatest among the three series,followed the xerosere and hydrosere series.The carbon mineralization rate of the three successional series varied with time and exhibited a consistent trend (decreasing quickly during the first stage and gradually stabilizing).The six kinds of community-type carbon mineralization in the three successional series were significantly different.The carbon mineralization rate of the three successional series in broadleaved Korean pine forests was original forest ＞ Betula platyphylla-Pinus koraiensis forest ＞ Picea koraiensis-Pinus koraiensis forest ＞ Betula costata-Pinus koraiensis forest ＞ Quercus-mongolica-Pinus koraiensis forest ＞Betula davurica-Pinus koraiensis forest.Mesosere scries carbon mineralization fit a nonlinear exponential better.Carbon mineralization of soil organic carbon was significantly positively correlated with soil total nitrogen and litter-fall amount in different successional series in the broadleafed Korean pine forests,and negatively correlated with soil moisture,soil bulk density,and soil pH.In short,successional histories,soil texture,and nutrient status resulted in differences in soil organic carbon mineralization of the different succession series in the broadleaved Korean pine forests.关键词
阔叶红松林/演替系列/有机碳矿化/环境因子Key words
Korean pine forests/succession/mineralization of soil organic carbon/environmental factors引用本文复制引用
张玲,张东来,毛子军..中国温带阔叶红松林不同演替系列土壤有机碳矿化特征[J].生态学报,2017,37(19):6370-6378,9.基金项目
国家白然科学基金资助项目(31270494,31600485) （31270494,31600485）
黑龙江省林业科学院基金资助(201403) （201403）
