Arid
DOI10.2111/05-219R2.1
Soil water content dynamics along a range condition gradient in a shortgrass steppe
Medina-Roldan, Eduardo; Arredondo Moreno, J. Tulio; Garcia Moya, Edmundo; Huerta Martinez, F. Martini
通讯作者Arredondo Moreno, J. Tulio
来源期刊RANGELAND ECOLOGY & MANAGEMENT
ISSN1550-7424
EISSN1551-5028
出版年2007
卷号60期号:1页码:79-87
英文摘要

Evidence is accumulating on the importance of plant cover and plant species composition on the control of ecosystem processes. In this study we examined a gradient considering the proportional contribution of the key species Bouteloua gracilis H.B.K. Lag. to assess its influence on the average and dynamic changes in soil water content in the shortgrass steppe from Central Mexico. We chose 4 sites with the following proportions of the key species: < 25%, 25%-50%, 50%-75%, and > 75%, ascribing each proportion to the range condition categories poor, fair, good, and excellent, respectively. Soil water measurements were carried out during 14 months at the 4 sites. Our results showed that range condition had a significant effect on soil water content (P < 0.01). The excellent condition was overall 14.5% and 12.5% lower soil moisture content compared to the poor and good range conditions (P < 0.01), respectively. Our results indicated a negative correlation between the gradient of soil water content with the range condition classes. Soil water content dynamics also differed among range condition classes, with the excellent condition showing both faster water recharge and extraction patterns than the other 3 range condition categories. Differences in soil water content among the range condition classes appeared to be related to morphological and physiological traits associated with the dominant species cover observed at each site. These results offer insights into the importance of vegetation characteristics as potential indicators of thresholds in grazing ecosystem processes such as soil water dynamics.


英文关键词ecosystem functioning semiarid grassland Bouteloua gracilis soil hydraulics
类型Article
语种英语
国家Mexico
收录类别SCI-E
WOS记录号WOS:000243649700010
WOS关键词MOJAVE DESERT ; GREAT-PLAINS ; COMMUNITY ; PATTERNS ; ECOSYSTEMS ; VEGETATION ; LANDSCAPE ; EROSION ; ROOTS ; FLOW
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/155838
作者单位(1)Inst Potosino Invest Cient & Tecnol, Div Ingn Ambiental & Manejo Recursos Nat, San Luis Potosi 78216, Mexico;(2)Colegio Postgrad Chapingo, Inst Recursos Nat, Programa Bot, Chapingo, Edo Mex, Mexico;(3)Univ Guadalajara, Dept Ecol, Lab Evoluc & Sistemas Ecol, Guadalajara 44430, Jalisco, Mexico
推荐引用方式
GB/T 7714
Medina-Roldan, Eduardo,Arredondo Moreno, J. Tulio,Garcia Moya, Edmundo,et al. Soil water content dynamics along a range condition gradient in a shortgrass steppe[J],2007,60(1):79-87.
APA Medina-Roldan, Eduardo,Arredondo Moreno, J. Tulio,Garcia Moya, Edmundo,&Huerta Martinez, F. Martini.(2007).Soil water content dynamics along a range condition gradient in a shortgrass steppe.RANGELAND ECOLOGY & MANAGEMENT,60(1),79-87.
MLA Medina-Roldan, Eduardo,et al."Soil water content dynamics along a range condition gradient in a shortgrass steppe".RANGELAND ECOLOGY & MANAGEMENT 60.1(2007):79-87.
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