Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s11104-009-0048-4 |
Seasonal variations in plant nitrogen relations and photosynthesis along a grassland to shrubland gradient in Owens Valley, California | |
Goedhart, C. M.1; Pataki, D. E.1,2; Billings, S. A.3 | |
通讯作者 | Goedhart, C. M. |
来源期刊 | PLANT AND SOIL
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ISSN | 0032-079X |
EISSN | 1573-5036 |
出版年 | 2010 |
卷号 | 327期号:1-2页码:213-223 |
英文摘要 | Community composition in semi-arid ecosystems has largely been explained by water availability; however, nitrogen is a common limiting nutrient, and may be an important control on plant function and carbon uptake. We investigated nitrogen relations and photosynthesis of several dominant species at shallow groundwater sites in Owens Valley, California. We measured soil nitrogen (N) availability, leaf N and isotopes, water isotopes, and gas exchange of dominant shrub species Atriplex torreyi and Ericameria nauseosa and grass species Distichlis spicata throughout the summer season in three sites that had similar watertable depths, but that varied in community composition and N availability. Surface soil inorganic N was greatest at the grassland site and declined from June to September at all sites. Leaf N declined throughout the season in all species, and was correlated with soil inorganic N. Photosynthesis of A. torreyi remained relatively constant throughout the season. In contrast, D. spicata and E. nauseosa experienced seasonal declines in photosynthesis at sites with greater inorganic N availability. Leaf N was significantly correlated with photosynthesis in D. spicata across all sites and measurement periods. Controls on N cycling are likely to be an important determinant of photosynthesis of D. spicata in this region. |
英文关键词 | Atriplex torreyi Distichlis spicata Ericameria nauseosa Great Basin Desert Nitrogen relations Photosynthesis |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000273754800017 |
WOS关键词 | SOIL-WATER POTENTIALS ; COLD DESERT COMMUNITY ; GREAT-BASIN ; CHRYSOTHAMNUS-NAUSEOSUS ; SUMMER PRECIPITATION ; PATAGONIAN MONTE ; ROOT RESPONSES ; PREDAWN PLANT ; N CAPTURE ; PULSES |
WOS类目 | Agronomy ; Plant Sciences ; Soil Science |
WOS研究方向 | Agriculture ; Plant Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/165983 |
作者单位 | 1.Univ Calif Irvine, Dept Ecol & Evolutionary Biol, Irvine, CA 92697 USA; 2.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA; 3.Univ Kansas, Kansas Biol Survey, Dept Ecol & Evolutionary Biol, Lawrence, KS 66047 USA |
推荐引用方式 GB/T 7714 | Goedhart, C. M.,Pataki, D. E.,Billings, S. A.. Seasonal variations in plant nitrogen relations and photosynthesis along a grassland to shrubland gradient in Owens Valley, California[J],2010,327(1-2):213-223. |
APA | Goedhart, C. M.,Pataki, D. E.,&Billings, S. A..(2010).Seasonal variations in plant nitrogen relations and photosynthesis along a grassland to shrubland gradient in Owens Valley, California.PLANT AND SOIL,327(1-2),213-223. |
MLA | Goedhart, C. M.,et al."Seasonal variations in plant nitrogen relations and photosynthesis along a grassland to shrubland gradient in Owens Valley, California".PLANT AND SOIL 327.1-2(2010):213-223. |
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