吉林农业大学学报2017，Vol.39Issue(2)：183-188,6.DOI:10.13327/j.jjlau.2017.3204
辽宁仙人洞典型林分森林土壤碳氮分布特征
Characteristics of Carbon and Nitrogen Distribution across Typical Forest Types in Xianrendong Nature Reserve of Liaoning Province
摘要
Abstract
Six typical forest types,conifer and broad-leaved mixed forest,Korean pine forest,Larix kaempferi Carr forest,broad-leaved mixed forest,Red pine forest and Oak natural secondary forest,were selected to study content of soil organic carbon (SOC),storage of organic carbon and content of total nitrogen (TN) of different forest types,and the correlation between ratio of carbon to nitrogen (C ∶ N) and content of SOC,and TN,available phosphorus and available potassium.The results show that contents of soil organic carbon and total nitrogen of different soil layers decreased with the increase of soil depth on all of the four soil profiles,and contents of SOC and TN showed significant differences;SOC and TN content change intervals of the six forest soils were 15.11 ～47.07 g/kg and 2.83～ 11.17 g/kg;C/N ranged from 9.27 ～28.23,and order of mean C/N was Oak natural secondary forest＞Korean pine forest ＞Red pine forest ＞ Larix kaempferi Carr forest ＞ conifer and broad-leaved mixed forest ＞ broad-leaved mixed forest;order of SOC storage of 0～ 50 cm soil layer of all the soils was broad-leaved mixed forest(230.64 t/hm2) ＞ Larix kaempferi Carr forest (210.46 t/hm2) ＞ conifer and broad-leaved mixed forest(136.26 t/hm2) ＞ Red pine forest (122.84 t/hm2) ＞ Korean pine forest (97.84 t/hm2) ＞ Oak natural secondary forest(68.55 t/ hm2);In 0～10 cm soil layer,correlation analysis showed that there were significantly positive correlations between SOC and TN,available phosphorus,available potassium,in 10～20 cm soil layer,and there were significantly positive correlations between SOC and TN,available phosphorus,but no significant correlations between SOC and available potassium.关键词
土壤有机碳/有机碳储量/碳氮比/垂直分布/林分类型/仙人洞/辽宁省Key words
soil organic carbon/organic carbon storage/C/N/vertical distribution/forest type/Xianrendong/Liaoning province分类
农业科技引用本文复制引用
张乐,孙向阳,李素艳,张骏达,赵俊勇,范俊岗..辽宁仙人洞典型林分森林土壤碳氮分布特征[J].吉林农业大学学报,2017,39(2):183-188,6.基金项目
国家科技基础性工作专项(2014FY120700) （2014FY120700）
