Modelling Vegetation Patterns in Semiarid Environments
نویسندگان
چکیده
منابع مشابه
Regular and irregular patterns in semiarid vegetation
Vegetation in many semiarid regions is strikingly patterned, forming regular stripes on hillsides and irregular mosaics on flat ground. A simple model of plant and water dynamics based on ecologically realistic assumptions and with reasonable parameter values captures both of these types of patterns. The regular patterns result from a Turing-like instability; the irregular patterns arise when t...
متن کاملMinimal mechanisms for vegetation patterns in semiarid regions.
The minimal ecological requirements for the fomation of regular vegetation patterns in semiarid systems have been recently questioned. Against the general belief that a combination of facilitative and competitive interactions is necessary, recent theoretical studies suggest that, under broad conditions, non-local competition among plants alone may induce patterns. In this paper, we review resul...
متن کاملPattern Solutions of the Klausmeier Model for Banded Vegetation in Semiarid Environments V: The Transition from Patterns to Desert
Vegetation in semideserts often self-organizes into spatial patterns. On gentle slopes, these typically consist of stripes of vegetation running parallel to the contours, separated by stripes of bare ground. The Klausmeier model is one of the oldest and most established of a number of mathematical models for this “banded vegetation.” The model is a system of reaction-diffusion-advection equatio...
متن کاملPattern Solutions of the Klausmeier Model for Banded Vegetation in Semiarid Environments IV: Slowly Moving Patterns and Their Stability
Banded vegetation is a characteristic feature of semiarid environments, comprising stripes of vegetation running parallel to the contours on hillsides, separated by stripes of bare ground. Mathematical modelling plays an important role in the study of this phenomenon, and the Klausmeier model is one of the oldest and most established, consisting of coupled reaction-diffusionadvection equations ...
متن کاملQuantifying Vegetation Change in Semiarid Environments: Precision and Accuracy of Spectral Mixture Analysis and the Normalized Difference Vegetation Index
Because in situ techniques for determining vegetation even when applied to areas of low vegetation cover, the SMA approach correctly determined the sense of change abundance in semiarid regions are labor intensive, they usually are not feasible for regional analyses. Remotely (i.e., positive or negative) in 87% of the samples. SMA results are superior to NDVI, which, although correlated sensed ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Procedia Environmental Sciences
سال: 2013
ISSN: 1878-0296
DOI: 10.1016/j.proenv.2013.06.019