Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.geoderma.2015.05.016 |
Spatio-temporal impacts of fire on soil nutrient availability in Larrea tridentata shrublands of the Mojave Desert, USA | |
Fuentes-Ramirez, Andres1; Schafer, Jennifer L.2; Mudrak, Erika L.1; Schat, Marjolein2; Parag, Hadas A.2; Holzapfel, Claus2; Moloney, Kirk A.1 | |
通讯作者 | Fuentes-Ramirez, Andres |
来源期刊 | GEODERMA
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ISSN | 0016-7061 |
EISSN | 1872-6259 |
出版年 | 2015 |
卷号 | 259页码:126-133 |
英文摘要 | Soil nutrients and herbaceous plant growth are patchily distributed in desert ecosystems, often restricted to "fertility islands" created by perennial shrubs. Although fire has been historically uncommon in southwestern American hot deserts (e.g., the Mojave), these regions have experienced more severe fires due to recent invasions of exotic species that increased proneness to fire. Nevertheless, the effects of fire on soil nutrients in SW deserts, including via the removal of shrubs by fire, remain unclear. We assessed the spatio-temporal impacts of fire on soil nutrient availability in burned and unburned areas of the Mojave Desert. The study was conducted in shrublands dominated by Larrea tridentata. We investigated both the short (seven months after fire) and long (seven years after fire) term effects of fire on soil nutrient availability within a microhabitat gradient spanning from under the shrub canopy to open inter-shrub areas. We found that nitrogen (N) and potassium (K) were higher under the canopy of burned L tridentata seven months after fire. In contrast, seven years after fire, N and K availability were lower around shrubs that were killed by fire. Over the short-term, fire had a positive effect on soil nutrients. However, over the long-term, the fertility island effect diminished after removal of shrubs by fire, and the differential availability of nutrients such as N and K became more similar under shrubs and in open inter-shrub areas. This reinforces the key role of L. tridentata in influencing the distribution of soil nutrients and provides support for the hypothesis that post-fire herbaceous plant growth will be less restricted to areas under shrubs. (C) 2015 Elsevier B.V. All rights reserved. |
英文关键词 | Creosote bush Fertility islands Nitrogen Potassium Phosphorus PRS-probes Wildfire |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000360867800013 |
WOS关键词 | SONORAN DESERT ; ANNUAL PLANTS ; VEGETATION FIRES ; SPATIAL-PATTERN ; CREOSOTE-BUSH ; INORGANIC-N ; NITROGEN ; TERM ; ECOSYSTEM ; SHRUBS |
WOS类目 | Soil Science |
WOS研究方向 | Agriculture |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/187479 |
作者单位 | 1.Iowa State Univ, Dept Ecol Evolut & Organismal Biol, Ames, IA 50011 USA; 2.Rutgers State Univ, Dept Biol Sci, Newark, NJ 07102 USA |
推荐引用方式 GB/T 7714 | Fuentes-Ramirez, Andres,Schafer, Jennifer L.,Mudrak, Erika L.,et al. Spatio-temporal impacts of fire on soil nutrient availability in Larrea tridentata shrublands of the Mojave Desert, USA[J],2015,259:126-133. |
APA | Fuentes-Ramirez, Andres.,Schafer, Jennifer L..,Mudrak, Erika L..,Schat, Marjolein.,Parag, Hadas A..,...&Moloney, Kirk A..(2015).Spatio-temporal impacts of fire on soil nutrient availability in Larrea tridentata shrublands of the Mojave Desert, USA.GEODERMA,259,126-133. |
MLA | Fuentes-Ramirez, Andres,et al."Spatio-temporal impacts of fire on soil nutrient availability in Larrea tridentata shrublands of the Mojave Desert, USA".GEODERMA 259(2015):126-133. |
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