应用生态学报2017，Vol.28Issue(9)：2888-2896,9.DOI:10.13287/j.1001-9332.201709.027
温带森林不同海拔土壤有机碳及相关胞外酶活性特征
Characteristics of soil organic carbon and related exo-enzyme activities at different altitudes in temperate forests
摘要
Abstract
We measured soil organic carbon contents,hydrolase and oxidoreductase activities relating to carbon cycling at 7 different altitudes of Laotudingzi Mountain in temperate forest ecosystem,and studied the affecting factors of soil organic carbon contents and the related soil extracellular enzyme activities along the altitude.The results showed that soil organic carbon (SOC),particulate organic carbon (POC) and dissolved organic carbon (DOC) contents increased significantly with altitude except between 825-1233 m,and DOC/SOC decreased significantly with altitude.The activities of α-glucosidase,β-glucosidase,β-xylosidase and cellobiohydrolase increased significantly with altitude,and the hydrolase activities were significantly and positively correlated with SOC,POC,DOC,total nitrogen (TN) and soil moisture contents (SMC).Peroxidase (POD) activity was significantly lower at 675 m in Larix gmelinii plantation than at the other altitudes,and was positively correlated with soil nutrient contents (SOC,TN,POC,DOC) and soil moisture.Polyphenol oxidase (PPO) activity was higher in Korean pine plantation at 825 m and in deciduous broad-leaved forest at 947 m than at the other altitudes,and PPO activity was only positively correlated with soil pH,suggesting that soil acidity was a major factor influencing PPO activity.Soil nutrient and water contents were important factors that influenced the distribution of soil hydrolase along altitude in temperate forest ecosystem.关键词
水解酶/氧化还原酶/有机碳含量/海拔梯度/温带森林Key words
hydrolase/oxidoreductase/organic carbon content/altitude gradient/temperate forest引用本文复制引用
郭志明,张心昱,李丹丹,董文亭,李美玲..温带森林不同海拔土壤有机碳及相关胞外酶活性特征[J].应用生态学报,2017,28(9):2888-2896,9.基金项目
本文由国家自然科学基金项目(31290222,41571130043,41571251)和中国科学院技术创新项目(201604)资助 （31290222,41571130043,41571251）
This work was supported by the National Natural Science Foundation of China (31290222,41571130043,41571251),and the Technology Innovation Program of Chinese Academy of Sciences (201604). （31290222,41571130043,41571251）
