Home-field Effects of Leaf Litter Decomposition of Dominate Sand-fixing Shrubs in the Horqin Sandy Land

doi:10.7522/j.issn.1000-694X.2018.00085

Journal of Desert Research ›› 2019, Vol. 39 ›› Issue (5): 62-70.DOI: 10.7522/j.issn.1000-694X.2018.00085

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Home-field Effects of Leaf Litter Decomposition of Dominate Sand-fixing Shrubs in the Horqin Sandy Land

Yang Hongling^1,2, Li Yulin¹, Ning Zhiying^1,2, Zhang Ziqian^1,2

1. Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resource, Chinese Academy of Sciences, Lanzhou 730000, China;
2. University of Chinese Academy of Sciences,Beijing 100049, China

Received:2018-07-04 Revised:2018-09-13 Online:2019-09-29 Published:2019-09-29

Abstract

Abstract: Under the influence of climate change and human activities, sandy grassland in Horqin gradually degenerates into shrubs. In this study, we collected leaf litters of two dominant sand-fixing shrubs,Caraganamicrophylla and Artemisia halodendron,to carry out the interactive transplantation experiments by placing single litter and mixed litter to "home" or "away" environment.wedescirbed CO₂ release and dry matter loss and also compared the difference between measured and predicted CO₂ emissions from mixed litter. We studied the causes of home-field effect and its driving mechanism. Hence, it can provide a theoretical basis for incorporating the home field effect into the litter decomposition model. The results showed that compared with the high-quality leaf litters of C.microphylla, the decomposition of A.halodendron litter had a stronger home field effect. Also, the special effects of soil microbes rather than the transport or storage behavior of soil animals lead to thehome field effect of leaf litter decomposition. In addition, the home field effect of mixed litter is closely related to the similarity of quality of long-term input litter in the decomposing habitat. The greater the quality similarity, the stronger of the home field effect. This study provides a theoretical basis for incorporating the main field effect into the litter decomposition model and improving the simulation accuracy.

Key words: Horqin Sandy land, shrubs, litter quality, soil organism, mixed-litter

CLC Number:

Q948.1

Yang Hongling, Li Yulin, Ning Zhiying, Zhang Ziqian. Home-field Effects of Leaf Litter Decomposition of Dominate Sand-fixing Shrubs in the Horqin Sandy Land[J]. Journal of Desert Research, 2019, 39(5): 62-70.

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Home-field Effects of Leaf Litter Decomposition of Dominate Sand-fixing Shrubs in the Horqin Sandy Land

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