Root order and initial moisture status influenced root decomposition in a subtropical tree species Liquidambar formosana
Root order and initial moisture status influenced root decomposition in a subtropical tree species Liquidambar formosana
复制标题
根序和初始水分状态影响亚热带树种枫香的根分解
DOI:
10.1007/s11104-019-04248-x
复制
发表时间:
2019-08
期刊:
影响因子:
4.9
通讯作者:
Li Shuo
中科院分区:
文献类型:
--
作者:
Wang Peng;Liu Xiaoxue;Mou Pu;Guo Jin;Li Shuo
Root decomposition plays an important role in biogeochemical cycles in terrestrial ecosystems. However, there is still controversy on whether low-order (finer) or high-order (coarser) roots decay faster. Previous studies on root decomposition often used dried root samples, and the dehydrating process may influence the results. In this study, we aimed to examine the decomposability of low- and high-order roots and whether initial moisture status would influence their decomposition. We carried out a one-year litterbag experiment for roots of a subtropical tree species Liquidambar formosana. Roots for the decomposition were divided into low- (1st and 2nd orders) and high-order (3rd and 4th orders) classes, and were dried or kept fresh before being buried into the soil. We found that low-order roots were decomposed slower (half the rate of high-order roots in terms of mass loss), and the content of soluble carbohydrates was the main influencing factor. We also found that drying prior to decomposition facilitated the decomposition of high-order roots during the early stage by 10%. Our study suggests that litter carbon quality, particularly soluble carbohydrate content, is the major driver for root decomposition, and that previous studies using dried root samples might have overestimated short-term root decomposition.
登录
查看更多内容
影响因子:
11.4
作者:
Wang, Xiaoyue;Sun, Bo;Cao, Xiaoyan
通讯作者:
Cao, Xiaoyan
DOI:
10.1073/pnas.1716595115
发表时间:
2018-09
期刊:
Proceedings of the National Academy of Sciences
影响因子:
--
作者:
Tao Sun;Sarah Hobbie;Björn Berg;Hongguang Zhang;Qingkui Wang;Zhengwen Wang;Stephan Hättenschwiler
通讯作者:
Stephan Hättenschwiler
影响因子:
6.1
作者:
LiyanZhuang;Wanqin Yang;Fuzhong Wu;Bo Tan;Li Zhang;Kaijun Yang;Ruoyang He;Zhijie Li;Zhenfeng Xu
通讯作者:
Zhenfeng Xu
影响因子:
6.1
作者:
de Roos, AM;Leonardsson, K;Mittelbach, GG
通讯作者:
Mittelbach, GG
影响因子:
4.9
作者:
Sun, Tao;Mao, Zijun;Dong, Lili;Hou, Lingling;Song, Yuan;Wang, Xiuwei
通讯作者:
Wang, Xiuwei