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- Title
Litterfall dynamic of a dry-hot valley savanna in Yuanjiang, southwest China.
- Authors
XIONG Zhuang; YE Wen; ZHANG Shubin; YANG Daxin
- Abstract
Savanna is a widespread vegetation in dry-hot valley region, southwest China. However, the litterfall dynamic and their relations with meteorological factors are poorly understood. In the study, the litterfall dynamic of savanna ecosystem was monitored, and the relationships between litterfall dynamic and main meteorological factors were analyzed in Yuanjiang, Yunnan Province, southwest China. The results showed that the annual total litterfall yield was 2 142.7 kg⋅hm-2. Leaf litter accounted for 72.9% (1 561.5 kg⋅hm-2) of the total litterfall, and the branch, bark, flower & fruit, pieces were 284.9, 18.9, 172.4 and 105.0 kg⋅hm-2, which accounted for 13.3%, 0.9%, 8.1% and 4.9%, respectively. The monthly dynamic of litterfall yield showed mono-peak in October, namely, most plants shed leaves in October when the air temperature and precipitation decreased sharply. According to the correlation analysis with climate factors, the monthly litterfall productions were negatively correlated with mean air temperature, maximum air temperature, minimum air temperature, monthly precipitation and soil moisture content (P<0.01), which showed that monthly precipitation was the primary limiting factor affecting the monthly litterfall yield.
- Publication
Journal of Forest & Environment, 2018, Vol 38, Issue 4, p439
- ISSN
2096-0018
- Publication type
Article
- DOI
10.13324/j.cnki.jfcf.2018.04.009