已退化杉木林中补植刨花润楠通过增加土壤磷限制性提高土壤碳含量
Replanting Machilus pauhoi Kaneh on degraded fir forest enhanced soil carbon content by improving soil phosphorus limitation
[目的]杉木林是受退化困扰的世界主要用材林之一,在已退化杉木林补植阔叶树是提升森林质量、增加植物碳库的重要途径,但是补植对土壤碳库的影响依旧存在争议。[方法]为此,本研究在典型已退化杉木林内补植速生刨花润楠,并检测补植后 0,5,8,12 年土壤的碳含量、养分状况、微生物群落结构和功能变化。[结果]已退化杉木遭受潜在磷限制,而刨花润楠补植显著提高土壤总碳但降低总氮和总磷,导致土壤C:N、C:P和N:P显著增加,进一步增加磷限制性。同时降低微生物量…查看全部>>
[Objective]Fir forest is one of the globally timber-aimed forest which suffered degradation,and replanting broadleaf tree to the degraded fir forest is an important way for improving vegetation carbon sink,while the effects on replanting on soil carbon sink are still controversial.[Method]For this reason,this research replanted the fast-growing Machilus pauhoi Kaneh into fir forest typically degraded,and measured the variation on soil carbon content,nu…查看全部>>
周汉昌;李婷;李怡;
degraded fir forest soil phosphorus limitation soil carbon microbes replanting
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