冰川冻土 ›› 2021, Vol. 43 ›› Issue (6): 1840-1847.doi: 10.7522/j.issn.1000-0240.2021.0115
收稿日期:
2021-05-07
修回日期:
2021-08-17
出版日期:
2021-12-31
发布日期:
2022-01-28
通讯作者:
贾丙瑞
E-mail:zhangpeng@ibcas.ac.cn;jiabingrui@ibcas.ac.cn
作者简介:
张鹏,硕士研究生,主要从事冻融变化与森林生态系统碳排放研究. E-mail: 基金资助:
Peng ZHANG1,2(),Hongru SUN1,2,Bingrui JIA1(
)
Received:
2021-05-07
Revised:
2021-08-17
Online:
2021-12-31
Published:
2022-01-28
Contact:
Bingrui JIA
E-mail:zhangpeng@ibcas.ac.cn;jiabingrui@ibcas.ac.cn
摘要:
森林凋落物的分解对于维持生态系统物质循环和养分平衡具有重要意义,并受到不同积雪厚度下冻融格局的影响。冻融期(包括冻结过程期、完全冻结期、融化过程期)是冻土区凋落物分解的重要时期,该时期分解的凋落物量约占全年分解总量的一半。积雪减少通常会导致土壤温度降低、冻融循环次数增加,进而影响凋落物分解。通过综述近10年来积雪变化对我国森林凋落物分解影响的研究成果发现,积雪厚度减少在冻融期通常会抑制凋落物质量损失、碳元素释放和纤维素降解,生长季则起到促进作用,从全年来看多数表现为抑制作用。因此,冻融作用造成凋落物的物理破坏,对其分解的促进作用主要发生在后续生长季。积雪厚度减少在冻融期通常抑制氮元素释放,生长季和全年则无明显规律;磷元素和木质素目前研究还存在很大差异。最后,进一步阐述了积雪变化对凋落物分解影响研究存在的问题及未来研究发展方向。
中图分类号:
张鹏,孙鸿儒,贾丙瑞. 积雪变化对中国森林凋落物分解影响研究进展[J]. 冰川冻土, 2021, 43(6): 1840-1847.
Peng ZHANG,Hongru SUN,Bingrui JIA. Research progress in the effects of snow cover change on forest litter decomposition in China[J]. Journal of Glaciology and Geocryology, 2021, 43(6): 1840-1847.
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