نتایج جستجو برای: dense forests
تعداد نتایج: 103454 فیلتر نتایج به سال:
There have been few telemetry studies on large and medium-sized mammals from Neotropical lowland forests. This can partly be explained by the difficulty of tracking animals with radio-telemetry in these forests, often in remote areas with poor access due to limited transportation infrastructure. Researchers have been forced to follow their collared animals by aeroplane (Crawshaw 1995, Fragoso 1...
• Water stress is expressed based on precipitation ( P ) minus evapotranspiration ET ). Cumulative P–ET relates to vulnerability reflected by moisture loss and mortality. Dense lower-elevation forests are more vulnerable during multi-year droughts. An LSTM model predicts (testing r 2 = 0.72) water availability (r 0.99). Historical-minimum annual portends in mountain affects vegetation response ...
in order to examine the ecological conditions and characteristics of fraxinus excelsior l. in the northern forests of iran 6 main areas as well as some miscellaneous ones , have been selected in the region respectively in : lomir2, shafaroud , park - e-noor , ahlam , alandan and noor.
In this paper we take $mathcal A$ to be the category {bf Pos-S} of $S$-posets, for a posemigroup $S$, ${mathcal M}_{pd}$ to be the class of partially ordered sequantially-dense monomorphisms and study the categorical properties, such as limits and colimits, of this class. These properties are usually needed to study the homological notions, such as injectivity, of $S$-...
Ecological systems often exhibit resilient states that are maintained through negative feedbacks. In ponderosa pine forests, fire historically represented the negative feedback mechanism that maintained ecosystem resilience; fire exclusion reduced that resilience, predisposing the transition to an alternative ecosystem state upon reintroduction of fire. We evaluated the effects of reintroduced ...
A coupled modeling framework including a terrestrial ecosystem model and an atmospheric radiative transfer model is used to evaluate the aerosols’ direct radiative effects on the surface soil moisture in global terrestrial ecosystems during 2003–2010. We conduct two sets of model runs with and without aerosols in a hindcast mode. Comparison analysis indicates that the simulated soil moisture is...
Forests are key ecosystems for climate change mitigation, playing a pivotal role in C and N land sequestering storage. However, the sustainable management of forests is challenging foresters who need continuous reliable information on status soil conditions. Yet, monitoring soils temperate evergreen forests, via satellite data, jeopardized by year round prevailing heavily dense canopy. In this ...
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