Environmental degradation is the deterioration of the environment through depletion of resources like air, water and soil, the destruction of ecosystems and the extinction of wildlife. it's any change or disturbance to the environment perceived to be deleterious or undesirable. As indicated by the I=PAT equation, environmental affect I or degradation is instigated by the mix of an already big and rising human population P, continually rising economic growth or per capita affluence A, and the application of resource depleting and polluting technology T.
Environmental degradation is one of the ten threats officially cautioned by the High level Panel on Threats, Challenges and Change of the United Nations. The United Nations International approach for catastrophe Reduction defines environmental degradation as "The reduction of the capacity of the environment to meet social and ecological goals, and needs". Environmental degradation is of many kinds. When natural habitats are destroyed or natural resources are depleted, the environment is degraded. Efforts to counteract this problem include environmental protection and environmental resources management.
weather change affects the Earth's water supply in a big number of ways. it's predicted that the mean world temperature will rise in the coming years caused by some forces influencing the weather, the amount of atmospheric CO2 will rise, and both of these will influence water resources, evaporation depends strongly on temperature and moisture availability, which can finally influence the amount of water available to replenish groundwater supplies.
Transpiration from plants may be influenced by a rise in atmospheric CO2, which can decrease their use of water, but may also increase their use of water from possible increases of leaf area. Temperature increase can decrease the length of the snow season in the winter and increase the intensity of snowmelt in warmer seasons, leading to peak runoff of snowmelt earlier in the season, influencing soil moisture, flood and drought risks, and storage capacities based on the area.
Warmer winter temperatures because a decrease in snowpack, which can result in diminished water resources throughout summer. This is particularly important at mid latitudes and in mountain regions that rely on glacial runoff to replenish their river systems and groundwater supplies, making these regions more and more susceptible to water shortages over time, a raise in temperature will firstly result in a fast rise in water melting from glaciers in the summer, followed by a retreat in glaciers and a decrease in the melt and consequently the water supply every year as the size of these glaciers get smaller and smaller.
Thermal expansion of water and increased melting of oceanic glaciers from a raise in temperature gives way to a rise in sea level, which can influence the new water supply of coastal regions also, as river mouths and deltas with higher salinity get pushed more inland, an intrusion of saltwater results in a raise of salinity in reservoirs and aquifers. Sea level rise can also consequently be caused by a depletion of groundwater, as weather change can influence the hydrologic cycle in some ways. Uneven versions of increased temperatures and increased precipitation around the globe results in water surpluses and deficits, but a world decrease in groundwater suggests a rise in sea level, after meltwater and thermal expansion were accounted for, which can supply a positive feedback to the problems sea level rise causes to fresh water supply.
A rise in air temperature results in a rise in water temperature, which is important in water degradation, as the water could become more vulnerable to bacterial growth. a raise in water temperature may also influence ecosystems largely because of a species' sensitivity to temperature, and also by causing changes in a body of water's self purification system from decreased amounts of dissolved oxygen in the water caused by rises in temperature.