نتایج جستجو برای: above ground biomass
تعداد نتایج: 437372 فیلتر نتایج به سال:
Fertilization has been shown to affect interactions between root hemiparasitic plants and their host plants, alleviating damage to the hosts by parasitism. However, as a majority of studies were conducted in pot cultivation, the influence of fertilizer application on root hemiparasites and the surrounding plant community in field conditions as well as relevant mechanisms remain unclear. We mani...
Dynamic vegetation models forced with spatially homogeneous biophysical parameters are capable of producing average productivity and biomass values for the Amazon basin forest biome that are close to the observed estimates, but these models are unable to reproduce observed spatial variability. Recent observational studies have shown substantial regional spatial variability of above-ground produ...
The present study deals with the estimation of tree biomass by non destructive method in tropical dry deciduous forest (DDF) and tropical mixed deciduous forest (MDF) in 0.1 ha permanent plots, established at seven sites each in seven districts of state of Madhya Pradesh in central India. Tree volume was calculated using site specific volume equation. The biomass of each species was estimated t...
Remote sensing is often used to assess rangeland condition and biophysical parameters across large areas. In particular, the relationship between the Normalized Difference Vegetation Index (NDVI) and above-ground biomass can be used to assess rangeland primary productivity (seasonal carbon gain or above-ground biomass “yield”). We evaluated the NDVI–yield relationship for a southern Alberta pra...
Tropical forest structural variation across heterogeneous landscapes may control above-ground carbon dynamics. We tested the hypothesis that canopy structure (leaf area and light availability) - remotely estimated from LiDAR - control variation in above-ground coarse wood production (biomass growth). Using a statistical model, these factors predicted biomass growth across tree size classes in f...
The basic ecology of seagrass beds was investigated by comparing biomass, productivity and density of Thalassia testudinum (turtle grass) at three sites: Puerto Vargas, Punta Cahuita and Rio Perezoso, in Cahuita National Park, Limón, Costa Rica, over a two month period (March-April 1999). Above ground biomass, density, and productivity were highest in the Puerto Vargas site while Punta Cahuita ...
Above-ground biomass (AGB) is a key indicator for studying grassland productivity and evaluating carbon sequestration capacity; it also area of interest in hyperspectral ecological remote sensing. In this study, we use data from typical alpine meadow the Qinghai–Tibet Plateau during main growing season (July–September), compare results various feature selection algorithms to extract an optimal ...
Globally, there is a serious issue in carbon stock due to high deforestation and the loss of land, limited storage pools aboveground underground forests different regions, increased emissions atmosphere. This review paper highlights impact exclosures on above below ground stocks biomass as solution globally curb emissions. The data has been analyzed dependent Intergovernmental Panel Climate Cha...
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