نتایج جستجو برای: vegetation dynamic

تعداد نتایج: 451846  

2007
E. Tuenter S. L. Weber F. J. Hilgen L. J. Lourens

Climate variability at sub-Milankovitch periods (between 2 and 15 kyr) is studied in a set of transient simulations with a coupled atmosphere/ocean/vegetation model of intermediate complexity (CLIMBER-2). Focus is on the region influenced by the African and Asian summer monsoon. Pronounced variations at periods of about 10 kyr (Asia and Africa) and about 5 kyr (Asia) are found in the monsoonal ...

Journal: :Journal of remote sensing 2021

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Journal: :Discrete and Continuous Dynamical Systems-series B 2022

<p style='text-indent:20px;'>In this paper, we aim to investigate the dynamic transition of Klausmeier-Gray-Scott (KGS) model in a rectangular domain or square domain. Our research tool is theory for dissipative system. Firstly, verify principle exchange stability (PES) by analyzing spectrum linear part model. Secondly, utilizing method center manifold reduction, show that undergoes conti...

2015
David D. Ackerly William K. Cornwell Stuart B. Weiss Lorraine E. Flint Alan L. Flint Lalit Kumar

Changes in climate projected for the 21st century are expected to trigger widespread and pervasive biotic impacts. Forecasting these changes and their implications for ecosystem services is a major research goal. Much of the research on biotic responses to climate change has focused on either projected shifts in individual species distributions or broad-scale changes in biome distributions. Her...

2013
Laia Núñez-Casillas José Rafael García Lázaro José Andrés Moreno-Ruiz Manuel Arbelo

The turn of the new millennium was accompanied by a particularly diverse group of burned area datasets from different sensors in the Canadian boreal forests, brought together in a year of low global fire activity. This paper provides an assessment of spatial and temporal accuracy, by means of a fire-by-fire comparison of the following: two burned area datasets obtained from SPOT-VEGETATION (VGT...

Journal: :Asian Pacific journal of tropical biomedicine 2011
Abdur Rashid Mohammad Farooq Swati Hassan Sher Mohammad N Al-Yemeni

OBJECTIVE To determine the present status of plant communities and their possible association with the habitat in Malam Jabba, Swat, Pakistan. METHODS A study on the phytoecology was conducted in various ecologically important sites of Malam Jabba, Swat, Pakistan from 2002 to 2004. The altitude of these sites ranged from 1 200 m to 3 200 m. Quadrat method was used for evaluation of plants com...

Journal: :Ecological applications : a publication of the Ecological Society of America 2017
Christopher E Gordon Owen F Price Elizabeth M Tasker

There is a public perception that large high-severity wildfires decrease biodiversity and increase fire hazard by homogenizing vegetation composition and increasing the cover of mid-story vegetation. But a growing literature suggests that vegetation responses are nuanced. LiDAR technology provides a promising remote sensing tool to test hypotheses about post-fire vegetation regrowth because veg...

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