0 a situation in which there are too many cows or other animals eating grass in an area, which damages the environment -- 过度放牧
Rough grazing and heath were found on similar soils to those bearing trees, which added weight to the overgrazing hypothesis.
With growing populations, resource depletion is accelerating, it is argued, resulting in widespread deforestation, overgrazing, biodiversity loss, soil erosion and soil fertility decline.
Mayer to substitute cash for livestock in order to avoid overcrowding and overgrazing of the reserve areas.
Twelve cases of alleged overgrazing have been investigated in the last three years.
But if the return on capital goes down, capital becomes cheaper and this will encourage more investment in cattle which, in turn, leads to overgrazing.
Livestock demand for forage exceeds the carrying capacity by some 20 per cent, and overgrazing and competition for food forces the wildlife population down.
It may also displace livestock on to adjacent heather moorland contributing to overgrazing of this habitat.
For grasslands, such as the one at the study site, a few years of rest following cultivation or overgrazing may be enough for grass phytomass to recover.
