Main species litter decomposition and function of soil fauna in Leymus chinensis grassland

Abstract

Abstract: This study is on the decomposition of main species litter and the function of soil fauna in Leymus chinensis grassland. The results show that there are differences in decomposition rate both among litter species and mesh bags. Chloris virgata litter decomposes fastest, meanwhile litter in 4 and 2 mm mesh bags have higher decomposition rates than those in 0.01 mm mesh bags. For the composition of soil fauna community in litter decomposition process, Gamasida, Actinedida and Oribatida are dominant groups, while Lygaeidae, Psocidae, Cydnidae, Pseudachorutidae, Microphysidae, Isotomidae and Tubalifera are common groups. Soil fauna community has generally accelerated the rates of litter decomposition, but the contributions of macro and mesh-micro soil fauna are different. Mesh-micro soil fauna has a stronger role of promoting the litter decomposition. The pearson correlation analysis indicates there is a significant negative relationship between litter mass loss percent and diversity index of soil fauna community, while the relationship does not exist between other soil fauna community characters and litter mass loss percent.

CLC Number:

S812

WANG Xing-li, YIN Xiu-qin, SONG Bo, XIN Wei-dong, LI Bo, MA Hong-bin. Main species litter decomposition and function of soil fauna in Leymus chinensis grassland[J]. Acta Prataculturae Sinica, 2011, 20(6): 143-149.

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