DOI: 10.3354/cr01303
Scopus记录号: 2-s2.0-84945567264
论文题名: Impact of soil type extrapolation on timothy grass yield under baseline and future climate conditions in southeastern Norway
作者: Persson T. ; Kværnø S. ; Höglind M.
刊名: Climate Research
ISSN: 0936577X
出版年: 2015
卷: 65 起始页码: 71
结束页码: 86
语种: 英语
英文关键词: Climate change scenarios
; Crop modelling
; Forage grass
; LINGRA
; Phleum pretense
; Poaceae
; Soil properties
; Spatial variability
Scopus关键词: climate change
; climate modeling
; crop improvement
; crop yield
; greenhouse gas
; performance assessment
; soil property
; soil type
; spatial variation
; weather
; Norway
; Phleum
; Phleum pratense
; Poaceae
英文摘要: Interactions between soil properties and climate affect forage grass productivity. Dynamic models, simulating crop performance as a function of environmental conditions, are valid for a specific location with given soil and weather conditions. Extrapolations of local soil properties to larger regions can help assess the requirement for soil input in regional yield estimations. Using the LINGRA model, we simulated the regional yield level and variability of timothy, a forage grass, in Akershus and Østfold counties, Norway. Soils were grouped according to physical similarities according to 4 sets of criteria. This resulted in 66, 15, 5 and 1 groups of soils. The properties of the soil with the largest area was extrapolated to the other soils within each group and input to the simulations. All analyses were conducted for 100 yr of generated weather representing the period 1961-1990, and climate projections for the period 2046-2065, the Intergovernmental Panel on Climate Change greenhouse gas emission scenario A1B, and 4 global climate models. The simulated regional seasonal timothy yields were 5-13% lower on average and had higher inter-annual variability for the least detailed soil extrapolation than for the other soil extrapolations, across climates. There were up to 20% spatial intra-regional differences in simulated yield between soil extrapolations. The results indicate that, for conditions similar to these studied here, a few representative profiles are sufficient for simulations of average regional seasonal timothy yield. More spatially detailed yield analyses would benefit from more detailed soil input. © Inter-Research 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116464
Appears in Collections: 气候减缓与适应
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Recommended Citation:
Persson T.,Kværnø S.,Höglind M.. Impact of soil type extrapolation on timothy grass yield under baseline and future climate conditions in southeastern Norway[J]. Climate Research,2015-01-01,65