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Journal article
Nitrogen addition shapes soil phosphorus availability in two reforested tropical forests in southern China
Biotropica, Vol.44(3), pp.302-311
44
2012
Web of Science ID: WOS:000303496500005
Abstract
Scant information is available on how soil phosphorus (P) availability responds to atmospheric nitrogen (N) deposition, especially in the tropical zones. This study examined the effect of N addition on soil P availability, and compared this effect between forest sites of contrasting
land-use history. Effects of N addition on soil properties, litterfall production, P release from decomposing litter, and soil P availability were studied in a disturbed (reforested pine forest with previous understory vegetation and litter harvesting) and a rehabilitated (reforested mixed pine/broadleaf forest with no understory vegetation and litter harvesting) tropical forest in southern China. Experimental N-treatments (above ambient) were the following: Control (no N addition), N50 (50 kg N ha⁻¹ yr⁻¹), and N100 (100 kg N ha⁻¹ yr⁻¹). Results indicated that N addition significantly decreased soil P availability in the disturbed forest. In the rehabilitated forest, however, soil P availability was significantly increased by N addition. Decreases in soil P availability may be correlated with decreases in rates of P release from decomposing litter in the N-treated plots, whereas the increase in soil P availability was correlated with an increase in litterfall production. Our results suggest that response of soil P availability to N deposition in the reforested tropical forests in southern China may vary greatly with temporal changes in tree species composition and soil nutrient status, caused by different land-use practices.
Details
- Title
- Nitrogen addition shapes soil phosphorus availability in two reforested tropical forests in southern China
- Publication Details
- Biotropica, Vol.44(3), pp.302-311
- Resource Type
- Journal article
- Publisher
- Wiley-Blackwell Publishing, Inc.; United States
- Series
- 44
- Format
- pdf
- Copyright
- © 2011 The Author(s)
- Identifiers
- WOS:000303496500005; 99380090882806600
- Academic Unit
- Biology; Hal Marcus College of Science and Engineering
- Language
- English