Decomposition Characteristics of Karelinia caspia, Alhagi sparsifolia and Populus euphratica Leaves in Extremely Arid Areas

doi:10.7522/j.issn.1000-694X.2019.00009

Journal of Desert Research ›› 2019, Vol. 39 ›› Issue (2): 193-201.DOI: 10.7522/j.issn.1000-694X.2019.00009

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Decomposition Characteristics of Karelinia caspia, Alhagi sparsifolia and Populus euphratica Leaves in Extremely Arid Areas

Li Chengdao^1,2,3, Li Xiangyi², Henry J Sun⁴, Li Lei², Lin Lisha²

1. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
2. Cele National Field Science Observation and Research Station of Desert Grassland Ecosystem, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China;
4. Desert Research Institute, Las Vegas, Nevada 89119, USA

Received:2019-02-13 Revised:2019-03-08 Published:2019-04-11

Abstract

Abstract: To explore the litter decomposition characteristics in extreme arid regions, three types of leaves litter (Karelinia caspia, Alhagi sparsifolia and Populus euphratica) were selected as test objects. Using litter bag method, litter decomposition experiments were conducted in the desert area of the southern margin of Taklimakan Desert. The results showed that:(1)After one year decomposition in extreme arid areas, litter decomposition is mainly concentrated in May to September, the loss of organic matter is an important reason of weight loss; (2) For litter with high water soluble salt content, water soluble salt loss accounts for a higher proportion of weight loss; (3) Rainfall is an important factor affecting litter decomposition in extreme arid areas. The relationship between rainfall and the Pearson correlation of litter decomposition is significantly higher than between temperature and solar radiation.

Key words: rainfall, extreme arid area, litter decomposition

CLC Number:

948.1

Li Chengdao, Li Xiangyi, Henry J Sun, Li Lei, Lin Lisha. Decomposition Characteristics of Karelinia caspia, Alhagi sparsifolia and Populus euphratica Leaves in Extremely Arid Areas[J]. Journal of Desert Research, 2019, 39(2): 193-201.

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Decomposition Characteristics of Karelinia caspia, Alhagi sparsifolia and Populus euphratica Leaves in Extremely Arid Areas

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