Arid
DOI10.1002/eco.1425
Influence of snow cover duration on soil evaporation and respiration efflux in mixed- conifer ecosystems
Nelson, Krystine1; Kurc, Shirley A.1; John, Grace2; Minor, Rebecca3; Barron-Gafford, Greg A.3
通讯作者Kurc, Shirley A.
来源期刊ECOHYDROLOGY
ISSN1936-0584
EISSN1936-0592
出版年2014
卷号7期号:2页码:869-880
英文摘要

Subalpine mixed-conifer ecosystems are dependent on snowfall, which is expected to decrease under projected climate change. Changes in snowpack are likely to have important consequences for water and carbon cycling in these and downstream ecosystems. Particularly within semi-arid environments, snowpack changes will directly influence localized water and carbon dynamics and indirectly influence regional-scale levels of water availability and carbon sequestration. In this study, we monitor soil evaporation (E) and soil respiration (R) and evaluate how snow cover affects these effluxes within a mixed-conifer ecosystem within the Santa Catalina Mountains about 10km north of Tucson, Arizona. Using time-lapse digital photos, we identified areas of consistent short and long snow duration, and we monitored E and R in these areas every 2weeks for 15months. Our primary findings include the following: (1) Dynamics of E are not different between long and short snow season sites, (2) E for both short and long snow seasons has a strong relationship with soil moisture and a poor relationship with soil temperature, (3) dynamics of R vary between long and short snow season sites throughout the year, with short snow season fluxes typically higher than those of long snow season sites, and (4) R for short and long snow seasons has a strong relationship with soil temperature and a poor relationship with soil moisture. Because climate change will only exacerbate both drying-wetting and cooling-warming cycles, detangling these complex relationships becomes increasingly important for understanding shifts in carbon dynamics in these subalpine mixed-conifer ecosystems. Copyright (c) 2013 John Wiley & Sons, Ltd.


英文关键词soil moisture soil temperature subalpine sky island time-lapse digital images critical zone snow ecohydrology carbon dioxide
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000334671600054
WOS关键词WESTERN UNITED-STATES ; SUB-ALPINE FOREST ; SOUTHWESTERN NORTH-AMERICA ; CARBON-DIOXIDE EXCHANGE ; CLIMATE-CHANGE ; HIGH-ELEVATION ; HYDROLOGICAL SIGNIFICANCE ; DECIDUOUS FOREST ; CHANGING CLIMATE ; GROWING-SEASON
WOS类目Ecology ; Environmental Sciences ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Water Resources
来源机构University of Arizona
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/181625
作者单位1.Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85719 USA;
2.Univ Dayton, Dept Biol, Dayton, OH 45469 USA;
3.Univ Arizona, Tucson, AZ 85721 USA
推荐引用方式
GB/T 7714
Nelson, Krystine,Kurc, Shirley A.,John, Grace,et al. Influence of snow cover duration on soil evaporation and respiration efflux in mixed- conifer ecosystems[J]. University of Arizona,2014,7(2):869-880.
APA Nelson, Krystine,Kurc, Shirley A.,John, Grace,Minor, Rebecca,&Barron-Gafford, Greg A..(2014).Influence of snow cover duration on soil evaporation and respiration efflux in mixed- conifer ecosystems.ECOHYDROLOGY,7(2),869-880.
MLA Nelson, Krystine,et al."Influence of snow cover duration on soil evaporation and respiration efflux in mixed- conifer ecosystems".ECOHYDROLOGY 7.2(2014):869-880.
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