期刊论文

Effects of litter manipulation on soil respiration in natural secondary forest in subalpine area of western Sichuan Province,China

中文

生态学报

1000-0933

2021

41

07

2687-2697

10.5846/stxb202006051459

国家重点研发课题（2017YFC0505004）； 四川省环境治理与生态保护重大科技专项（2018SZDZX0031）；

本校为其他机构

2019年5月—10月,采用LI⁃8100A土壤碳通量自动测量分析仪对川西米亚罗林区20世纪60年代采伐后经自然更新恢复形成的岷江冷杉(Abies faxoniana)次生针叶林(针叶林)、红桦(Betula albo⁃sinensis)+青榨槭(Acer davidii)+岷江冷杉次生针阔混交林(针阔混交林)和青榨槭+红桦+陕甘花楸(Sorbus koehneana Schneid)次生阔叶林(阔叶林)的土壤呼吸及土壤温湿度因子(对照、去除凋落物和加倍凋落物)进行观测。结果显示:去除和加倍凋落物对土壤温湿度的影响不显著,且3种林型之间的土壤呼吸速率差异不显著。与对照相比,去除凋落物使针叶林、针阔混交林、阔叶林的土壤呼吸速率分别降低了17.65%、21.01%和19.83...

Natural secondary forests play a crucial role in the subalpine forests of the upper reaches Minjiang River in the eastern margin of the Tibetan Plateau.However,the knowledge about influence of litter on soil respiration remain inadequately understood for the secondary forests.In order to evaluate the impact of litter on soil respiration under different natural secondary forests in subalpine area of western Sichuan Province,China.Aboveground litter manipulation experiment was carried out in three natural secondary forests including Abies faxoniana secondary coniferous forest,Betula albo-sinensi...