摘要
以长白落叶松和水曲柳混交林为研究对象,根据长白落叶松和水曲柳的栽植行数比选择4种不同行状混交比例的林分(类型Ⅰ:5∶3;类型Ⅱ:6∶4;类型Ⅲ:5∶5;类型Ⅳ:1∶1),建立长白落叶松和水曲柳生物量似乎不相关模型,分析林分各林层和生态系统碳储量的差异及其分配规律。结果表明:不同林分类型的乔木层碳储量为39.86~50.12 t·hm^(-2),类型Ⅰ、Ⅱ和Ⅳ的乔木层碳储量显著高于类型Ⅲ;林下植被层碳储量为0.10~0.30 t·hm^(-2),类型Ⅱ的林下植被层碳储量显著高于其他类型;凋落物层碳储量为4.43~6.96 t·hm^(-2),类型Ⅱ、Ⅲ凋落物层碳储量显著高于其他类型;土壤层碳储量为34.97~54.66 t·hm^(-2),类型Ⅱ土壤层碳储量显著高于其他类型。在整个生态系统中,林分类型Ⅰ~Ⅳ碳储量分别为90.43、108.27、85.83、89.92 t·hm^(-2),类型Ⅱ生态系统碳储量显著高于其他类型。乔木层和土壤层为生态系统主要碳库,分别占生态系统碳储量的43.3%~55.7%和38.7%~50.5%。建议在未来的营林造林中,以6行长白落叶松和4行水曲柳交替种植。
In this study,four types of mixed Larix olgensis and Fraxinus mandshurica plantations were selected according to the rows-mixing proportions(typeⅠ:5:3,typeⅡ:6:4,typeⅢ:5:5,typeⅣ:1:1).The see-mingly unrelated biomass models of L.olgensis and F.mandshurica were developed for obtaining biomass values,and the difference and composition of carbon storage in each forest layer and ecosystem were analyzed.The results showed that carbon storage of arbor layer in different stand types was 39.86-50.12 t·hm^(-2),the carbon storage of arbor layer inⅠ,ⅡandⅣwas significantly higher than that in typeⅢ.The carbon storage of understory was 0.10-0.30 t·hm^(-2),with that in typeⅡbeing significantly higher than other types.Carbon storage of litter layer was 4.43-6.96 t·hm^(-2),with typeⅡandⅢbeing significantly higher than those of the other types.In the soil layer,carbon storage was 34.97-54.66 t·hm^(-2).The carbon storage of soil layer in typeⅡwas significantly greater than those in the other types.At the whole ecosystem level,carbon storage of typeⅠ-Ⅳwas 90.43,108.27,85.83 and 89.92 t·hm^(-2),respectively.TypeⅡhad significantly greater carbon storage than the other types.The arbor layer and soil layer were the major carbon pools in the ecosystem,which accounted for 43.3%-55.7%and 38.7%-50.5%of the total,respectively.Our results suggested that mixing by six rows of L.olgensis and four rows of F.mandshurica was better for future planting.
作者
闫嘉杰
李凤日
谢龙飞
苗铮
董利虎
YAN Jia-jie;LI Feng-ri;XIE Long-fei;MIAO Zheng;DONG Li-hu(Ministry of Education Key Laboratory of Sustainable Forest Ecosystem Management,School of Forestry,Northeast Forestry University,Harbin 150040,China)
出处
《应用生态学报》
CAS
CSCD
北大核心
2022年第5期1175-1182,共8页
Chinese Journal of Applied Ecology
基金
国家重点研发计划项目(2017YFD0600402)资助
关键词
长白落叶松
水曲柳
混交比例
碳储量
Larix olgensis
Fraxinus mandshurica
mixing proportion
carbon storage
