文献类型：期刊文献

中文题名：滇中地区典型人工林土壤活性碳组分特征

英文题名：Characteristics of soil active carbon components in typical plantation forests in central Yunnan province

作者：雷晨雨[1,2] 冯德枫[2] 王猛[1] 张春华[2] 田瑞杰[1,2] 彭长青[3] 孙永玉[2]

第一作者：雷晨雨

机构：[1]西南林业大学林学院,昆明650224;[2]中国林业科学研究院高原林业研究所,昆明650224;[3]楚雄市林业局白依河林场,楚雄675000

年份：2021

卷号：27

期号：6

起止页码：1563-1569

中文期刊名：应用与环境生物学报

外文期刊名：Chinese Journal of Applied and Environmental Biology

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：中央级公益性科研院所基本科研业务费(CAFYBB2018ZB001);林业科技创新平台运行补助项目(2020132017);云南省自然生态监测网络监测项目(2020-YN-07)资助。

语种：中文

中文关键词：滇中地区;人工林;有机碳稳定性;土壤碳汇

外文关键词：central Yunnan province;plantation;organic carbon stability;soil carbon sink

分类号：S714

摘要：不同人工林类型会对土壤碳汇潜力产生影响,为科学评价不同人工植被恢复下土壤碳汇功能作出的响应,需要确定不同人工林土壤碳库储量及其稳定性变化.选择云南省楚雄州白依河国有林场内云南松(Pinus yunnanensis,P)纯林、栓皮栎(Quercus variabilis,Q)纯林、云南松-栓皮栎混交林(PQ)、黑荆树(Acacia mearnsii,AC)纯林和旱冬瓜(Alnus nepalensis,AL)纯林5种人工林为研究对象,比较5种人工林土壤的C:N、δ13C、有机碳含量(SOC)和易氧化有机碳(ROC)、可溶性有机碳(DOC)、微生物生物量碳(MBC)、热水解性碳(HWOC)等活性碳组分含量及其比例变化.结果显示:在滇中高原地区,旱冬瓜和黑荆树两种人工林林分有着更高的土壤SOC含量,但土壤有机碳稳定性较差.在5种人工林中,SOC含量变化范围为30.95-68.90 mg/g,其中旱冬瓜纯林的SOC含量为68.90 (±11.73) mg/g,显著高于其他人工林.土壤C:N的范围在8.95-24.95间,表现为PQ> P> Q> AC> AL.土壤δ13C的范围在-27.5‰-24.61‰间,表现为P> Q> PQ> AC> AL.上述结果表明固氮树种主要通过增加活性碳组分含量及其分配比例,提高了土壤的有机碳储存潜力,同时降低了土壤碳稳定性.
Different types of plantations affect the potential of soil carbon sinks. To evaluate the response of soil carbon sink function under different artificial vegetation restoration, it is necessary to determine the soil carbon bank reserves and stability changes in different plantations. Five plantation species, consisting of Pinus yunnanensis(P) pure forest, Quercus variabilis(Q) pure forest, mixed forest(PQ), Acacia Mearnsii(AC) pure forest, and Alnus nepalensis(AL) pure forest located at the Baiyi River National Forest farm, Chuxiong State,Yunnan, China were selected to compare the contents and ratios of the active carbon components(C:N;δ13 C;soil organic carbon, SOC;readily oxidizable carbon, ROC;dissolved organic carbon, DOC;microbial biomass carbon, MBC;hot-water extractable carbon, HWOC). In the central Plateau area of Yunnan province, the two kinds of artificial stands of Alnus nepalensis and Acacia mearnsii had higher soil SOC content, but the stability of soil organic carbon was poor. Among the five plantation species, the SOC content ranged from 30.95 to 68.90 mg/g, among which the Alnus nepalensis pure forest had the highest SOC content, which was significantly higher than the other forests. Soil C:N ranged from 8.95 to 24.95, manifested as PQ > P > Q > AC > AL. Soil δ13 C ranged from-27.5‰ to-24.61‰, presenting as P > Q > PQ > AC > AL. Nitrogen fixation species increased the soil organic carbon storage potential with the active carbon component concentration and reduced the stability of soil carbon.