| 释义 |
overˈgrazing, vbl. n.
[over- 29 a.]
Damage to vegetation, esp. grassland, by excessive grazing.
1935Discovery Aug. 232/2 Overgrazing has removed most of the nutritious native grasses. 1943J. S. Huxley TVA vi. 33 The method of row cropping allowed the top⁓soil to be washed away. Overgrazing followed, and now the land is completely useless. 1946Nature 2 Nov. 606/2 There is also the risk of over-grazing, especially where the natural vegetation consists rather of shrubs and bushes than of turf. 1956Ibid. 3 Mar. 417/1 Failure of natural regeneration in juniper forests in Somaliland is now attributed to micro-climatic changes following over-grazing. 1964E. J. H. Corner Life of Plants xv. 268 We can form no idea of the destructive power..of over-grazing where trees, for lack of rain, are disappearing. 1971Country Life 12 Aug. 390/2 Examination of the intensively grazed patches showed no overgrazing such as occurs when hill sheep become concentrated on heather. 1976Conservation News Sept./Oct. 4/1 Over-grazing..has led to the whole vast area becoming degraded. |