1. Effects of Litter Input on Organic Carbon and Its Chemical-Bound Forms of Soil Microaggregate in Schima Superba Forest
- Author
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Liqin Zhu, Rongzhen Huang, Jinping Wang, Guomin Huang, Hongyu Wan, and Lijing Lin
- Subjects
litter ,microaggregate ,calcium-bonded organic carbon ,iron (aluminum)-bonded organic carbon ,schima superba ,Environmental sciences ,GE1-350 ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Abstract
[Objective] The effects of changes in aboveground litter, underground roots, and mycorrhizal inputs on soil microaggregates of restored red soil forestland were analyzed in order to provide a basis for soil function reconstruction and understanding the ecosystem carbon cycle after forest restoration of degraded lands. [Methods] The study was conducted in a pure Schima superba forest, a typical broad-leaved forest recovered from eroded and degraded red soil in a subtropical region. Five input treatments were established: no litter (CT), mycorrhiza (M), root+mycorrhiza (RM), aboveground+underground litter (LRM), and double aboveground+underground litter (DLRM). The composition of soil microaggregates, organic carbon, and their chemically bound forms were analyzed. [Results] There were no significant differences in soil microaggregate mass percentage, organic carbon, Ca-SOC, Fe (Al)-SOC, and Ca-SOC/SOC among the different treatments (p>0.05). Compared with CT, LRM reduced Fe (Al)-SOC/SOC of microaggregates of size 20—50 μm and 50—200 μm by 40.06% and 46.67%, respectively (p
- Published
- 2023
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