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Full-Text Articles in Life Sciences
Main And Interactive Effects Of Increased Precipitation And Nitrogen Addition On Growth, Morphology, And Nutrition Of Cinnamomum Burmanni Seedlings In A Tropical Forest, Jun Wang, Dafeng Hui, Hongfang Lu, Faming Wang, Nan Liu, Zhongyu Sun, Hai Ren
Main And Interactive Effects Of Increased Precipitation And Nitrogen Addition On Growth, Morphology, And Nutrition Of Cinnamomum Burmanni Seedlings In A Tropical Forest, Jun Wang, Dafeng Hui, Hongfang Lu, Faming Wang, Nan Liu, Zhongyu Sun, Hai Ren
Biology Faculty Research
Global change such as altered precipitation patterns and increased atmospheric nitrogen (N) deposition will have significant impacts on seedling growth during plant recruitment. However, how interactive effects of increased precipitation and N deposition on forest seedling performance have not been well investigated. In this study, we conducted a two-year field experiment that manipulating precipitation amount (ambient rainfall and 25% increment during the wet season) and exogenous N addition (0 and 100 kg ha−1 yr−1) in a tropical secondary forest. Seedling growth, morphology and nutritional status of a dominant tree species (Cinnamomum burmanni) were measured. Results showed that increased precipitation had …
Changing Rainfall Frequency Rather Than Drought Rapidly Alters Annual Soil Respiration In A Tropical Forest, Qi Deng, Deqiang Zhang, Xi Han, Guowei Chu, Quanfa Zhang, Dafeng Hui
Changing Rainfall Frequency Rather Than Drought Rapidly Alters Annual Soil Respiration In A Tropical Forest, Qi Deng, Deqiang Zhang, Xi Han, Guowei Chu, Quanfa Zhang, Dafeng Hui
Biology Faculty Research
Tropical forests play an important role in global carbon (C) cycling due to high primary productivity and rapid litter and soil organic C decomposition. However, it is still unclear how changing rainfall will influence soil CO2 losses (i.e. via soil respiration) in tropical forests. Here, using a rainfall and litter manipulation experiment in a tropical forest, we show that enhanced litter-leached dissolved organic carbon (DOC) production with increased rainfall frequency drives substantial CO2 loss via soil respiration. A 50% increase in rainfall frequency (no change in total rainfall amount) enhanced inputs of DOC by 28%, total dissolved nitrogen (TDN) by …