Brief on the usage of artificial pasture on the qinghai alpine plateau 淺談青海省高寒牧區(qū)人工草地的利用
Economic efficiency analysis of establishing artificial pasture in quot; the black soil type quot; degenerated grassland 退化草地上建植人工草地的經(jīng)濟效益分析
The causes of devolution , desertation , salinization and solonization were analysed in two aspects : it is apparently due to overpopulation , overstocking , unreasonably using , lacking of new technique , frequent occurrence of nature disaster , small area and low output of artificial pasture and semi - artificial pasture , but the more deeply reason was that the function of grassland was not completely understood only emphasizing the economic efficiency and regrowthful resource in grassland while the ecological efficiency and its potential use were neglected 本文主要從兩方面對草原三化進行了分析,首先從表面上看有以下幾方面原因,人口多、牲畜數(shù)量多、草原利用不合理、新技術(shù)推廣差、草原自然災(zāi)害頻繁、人工半人工草地少產(chǎn)量低。其次又挖掘了草原退化的深層原因,第一對草原資源的功能和作用的認識具有片面性,只重視草原的經(jīng)濟效益,卻忽略了它的生態(tài)效益;只重視草原資源的再生性,卻忽略了它的適宜可利用性。