EurekaMag.com logo
+ Site Statistics
References:
53,517,315
Abstracts:
29,339,501
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Growing season expansion and related changes in monthly temperature and growing degree days in the Inter-Montane Desert of the San Luis Valley, Colorado



Growing season expansion and related changes in monthly temperature and growing degree days in the Inter-Montane Desert of the San Luis Valley, Colorado



Climatic Change 114(3-4): 723-744



Most climate change studies on high elevation ecosystems identify changes in biota, while several report abiotic factors. However, very few report expansion of the freeze-free period, or discuss monthly changes of temperature and growing degree days (GDD) during the growing season. This study provides initial data on agriculturally-related aspects of climate change during the growing season (M-J-J-A-S) in the inter-montane desert of the San Luis Valley (SLV), Colorado. Temperature data were gathered from 7 climate stations within the SLV. Based on ordinal days, the last vernal freeze is occurring (p?<.5) earlier at 3 stations than in prior years, ranging between 5.52 and 11.86 days during 1981 27. Significantly-later autumnal freezes are occurring at 5 stations by 5.95 18.1 days, while expansion of the freeze-free period was significantly longer at all stations by 7.2 24.21 days. The freeze-free period averaged about 93 days prior to the 198s, but now averages about 17 days. Increases (p?<.5) in daily mean, maximum, minimum temperature occurred at nearly all stations for each month. Increases in GDD1, GDD4.4 (potato) and GDD5.5 (alfalfa) also occurred at nearly all stations for all months during 1994 27. Higher temperatures increase the number of GDD, quickening crop growth and maturity, and potentially reducing yield and quality unless varieties are adapted to changes and water is available for the season extension and increased evapotranspiration.

(PDF same-day service: $19.90)

Accession: 036422011

Download citation: RISBibTeXText

DOI: 10.1007/s10584-012-0448-y



Related references

Increases in growing degree days in the alpine desert of the San Luis Valley, Colorado. Water, Air, And Soil Pollution5: 1 4, 289-304, 2010

Computer aided mapping of growing degree days for denmark calculated from monthly temperature normals. Acta Agriculturae Scandinavica 34(3): 330-338, 1984

Climatological analysis of air temperature data for Lincoln College, Canterbury. 2. Growing degree days during the average freeze-free season. New Zealand Journal of Science 17(1): 71-76, 1974

Climatological analysis of air temperature data for lincoln college canterbury part 2 growing degree days during the average freeze free season. New Zealand Journal of Science 17(1): 71-76, 1974

Quantifying height growth and monthly growing degree days relationship of plantation Taiwan spruce. Forest Ecology and Management 257(11): 0-2276, 2009

Growing degree days as a measure of temperature effects on cotton. Cotton Growing Review, 49: 1, 39-49, 1972

Precipitation, temperature and growing degree days in Maryland and Delaware during 1979. MP yland Agricultural Experiment Station: 81 (960), 1981

Mathematical formulae for calculating the base temperature for growing degree days. Agricultural & Forest Meteorology 74(1-2): 61-74, 1995

Determination of sowing date for silage maize based on growing degree days and soil temperature. Korean Journal of Crop Science 35(3): 254-258, 1990

Base-temperature, growing degree-days and crop growth cycle duration of triticale cultivars. Bragantia 63(3): 447-453, 2004

Effect of temperature distribution during the growing season on the degree of mechanical damage to potato tubers. Zeszyty Problemowe Postepow Nauk Rolniczych 408: 329-338, 1993

Regression models of monthly water-level change in and near the Closed Basin Division of the San Luis Valley, south-central Colorado. 1995

Effect of planting date on growing degree days to different phenological stages and attributes related to yield in maize. Bulletin of Faculty of Agriculture, University of Cairo 42(3): 687-699, 1991

Phenology, growing degree days and attributes related to growth and yield of maize grown in conventional and equidistant plant spacings. Bulletin of Faculty of Agriculture, University of Cairo 42(3): 727-738, 1991

Growing degree days, aerial biomass, harvest index and days to maturity. Annual report of the Bean Improvement Cooperative5(35): 160-161, 1992