An ecohydrological approach to predicting hillslope-scale vegetation patterns in dryland ecosystems
نویسندگان
چکیده
منابع مشابه
A morphometric analysis of vegetation patterns in dryland ecosystems
Vegetation in dryland ecosystems often forms remarkable spatial patterns. These range from regular bands of vegetation alternating with bare ground, to vegetated spots and labyrinths, to regular gaps of bare ground within an otherwise continuous expanse of vegetation. It has been suggested that spotted vegetation patterns could indicate that collapse into a bare ground state is imminent, and th...
متن کاملPeriodic versus scale-free patterns in dryland vegetation.
Two major forms of vegetation patterns have been observed in drylands: nearly periodic patterns with characteristic length scales, and amorphous, scale-free patterns with wide patch-size distributions. The emergence of scale-free patterns has been attributed to global competition over a limiting resource, but the physical and ecological origin of this phenomenon is not understood. Using a spati...
متن کاملEcohydrological optimization of pattern and processes in water-limited ecosystems: A trade-off-based hypothesis
[1] The complex interactions between plants, soils, and climates in semiarid ecosystems make it difficult to define specific ecohydrological optimization mechanisms that underlie observed spatiotemporal patterns of vegetation structure. There remains a clear need to develop conceptual models that are capable of interpreting and predicting spatial pattern formation in savannas (and similar dry w...
متن کاملHillslope soils and vegetation
a Department of Environmental Science, Policy, and Management, 130 Mulford Hall, University of California, Berkeley, CA 94720, USA b School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA c Department of Soil, Water, and Climate, University of Minnesota, 439 Borlaug Hall, 1991 Upper Buford Circle, St. Paul, MN 55108, USA d Department of Earth and Planetary Science...
متن کاملCarbon sequestration in dryland ecosystems.
Drylands occupy 6.15 billion hectares (Bha) or 47.2% of the world's land area. Of this, 3.5 to 4.0 Bha (57%-65%) are either desertified or prone to desertification. Despite the low soil organic carbon (SOC) concentration, total SOC pool of soils of the drylands is 241 Pg (1 Pg = petagram = 10(15)g = 1 billion metric ton) or 15.5% of the world's total of 1550 Pg to 1-meter depth. Desertification...
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ژورنال
عنوان ژورنال: Water Resources Research
سال: 2012
ISSN: 0043-1397
DOI: 10.1029/2011wr010524