DOI: 10.5194/hess-19-4547-2015
Scopus记录号: 2-s2.0-84947244058
论文题名: Climate response to Amazon forest replacement by heterogeneous crop cover
作者: Badger A ; M ; , Dirmeyer P ; A
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2015
卷: 19, 期: 11 起始页码: 4547
结束页码: 4557
语种: 英语
Scopus关键词: Budget control
; Climate change
; Crops
; Deforestation
; Earth atmosphere
; Forestry
; Irrigation
; Land use
; Physiological models
; Vegetation
; Atmospheric general circulation models
; Climate anomalies
; Cropping seasons
; Earth system model
; Land surface scheme
; Natural vegetation
; Physiological parameters
; Vegetation change
; Climate models
; agricultural modeling
; agroforestry
; cover crop
; cropping practice
; deforestation
; irrigation system
; land use change
; replacement
; seasonal variation
; tropical forest
; water budget
; Amazonia
英文摘要: Previous modeling studies with atmospheric general circulation models and basic land surface schemes to balance energy and water budgets have shown that by removing the natural vegetation over the Amazon, the region's climate becomes warmer and drier. In this study we use a fully coupled Earth system model and replace tropical forests by a distribution of six common tropical crops with variable planting dates, physiological parameters and irrigation. There is still general agreement with previous studies as areal averages show a warmer (+1.4 K) and drier (-0.35 mm day-1) climate. Using an interactive crop model with a realistic crop distribution shows that regions of vegetation change experience different responses dependent upon the initial tree coverage and whether the replacement vegetation is irrigated, with seasonal changes synchronized to the cropping season. Areas with initial tree coverage greater than 80 % show an increase in coupling with the atmosphere after deforestation, suggesting land use change could heighten sensitivity to climate anomalies, while irrigation acts to dampen coupling with the atmosphere. © Author(s) 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78384
Appears in Collections: 气候变化事实与影响
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作者单位: George Mason University, Fairfax, VA, United States; Center for Ocean-Land-Atmosphere Studies, Fairfax, VA, United States
Recommended Citation:
Badger A,M,, Dirmeyer P,et al. Climate response to Amazon forest replacement by heterogeneous crop cover[J]. Hydrology and Earth System Sciences,2015-01-01,19(11)