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Displaying 831 - 835 of 1605Impact of urbanization on flooding: The Thirusoolam sub watershed – A case study
The change in the land use pattern due to rapid urbanization adversely affects the hydrological processes in a catchment, leading to a deteriorating water environment. The increase in impervious areas disrupts the natural water balance. Reduced infiltration increases runoff and leads to higher flood peaks and volumes even for short duration low intensity rainfall. Due to their destructive effects, floods can significantly increase the expenses on mitigation efforts. The present study focuses on the Thirusoolam sub watershed, an urban watershed in Chennai.
Forest conservation versus conversion under uncertain market and environmental forest benefits in Ethiopia: The case of Sheka forest
Previous studies of costs and benefits of forest conservation haven't considered the irreversible nature of forest clearing and the uncertainty associated with forest preservation benefits. The present study adapted a dynamic optimization framework to analyze optimal land use decisions. Results show that ignoring negative climate change effects on tea production and forest carbon storage values leads to excessive deforestation and lower optimal forest stock levels.
Effects of land management on CO₂ flux and soil C stock in two Tanzanian croplands with contrasting soil texture
Evaluation of carbon dynamics is of great concern worldwide in terms of climate change and soil fertility. However, the annual CO₂ flux and the effect of land management on the carbon budget are poorly understood in Sub-Saharan Africa, owing to the relative dearth of data for in situ CO₂ fluxes. Here, we evaluated seasonal variations in CO₂ efflux rate with hourly climate data in two dry tropical croplands in Tanzania at two sites with contrasting soil textures, viz. clayey or sandy, over four consecutive crop-cultivation periods of 40 months.
accidental outcome: Social capital and its implications for Landcare and the “status quo”
For 25 years the Australian Landcare program has encouraged rural land managers to work cooperatively to resolve natural resource management issues across the nation. Landcare has spread and the model is used internationally. Despite its successes, Landcare has come under criticism for not sufficiently directing land management practices towards environmental sustainability. This criticism sees it as having maintained the “status quo”.
Testing the effect of site selection and parameter setting on REVEALS-model estimates of plant abundance using the Czech Quaternary Palynological Database
REVEALS-based quantitative reconstruction of Holocene vegetation cover (expressed in plant functional types, PFTs) is used in the LANDCLIM project to assess the effect of human-induced land-cover change on past climate in NW Europe. Using the Czech Quaternary Pollen Database, this case study evaluates the extent to which selection of data and input parameters for the REVEALS model applications would affect reconstruction outcomes.