草地退化的SRYYR所造成的综合影响，人为和自然因素的影响。
Grassland degradation in the SRYYR is caused by the integrated effect of anthropogenic and natural factors.
于是欧洲兔子遍及整个澳洲大陆。它们掘洞挖穴，滥食牧草，造成草地的严最破坏，使数百万头牛羊无以为生。
It overran a whole continent. It caused devastation by burrowing and by devouring the herbage which might have maintained millions of sheep and cattle.
在造成草地退化的众多因素中，可控因素主要有过度放牧、垦殖、樵采以及政策的导向。
There were many factors contributing to the grassland degeneration, but some were artificial control and others were not.
放牧活动是天然草地最基本、最重要的利用方式，也是造成草地退化的重要原因。
Grazing is the most essential and significant means in the utilization of grassland, and it is also the important reason that causes the degradation in grassland.
这势必对本身脆弱的草地生态环境造成极大的破坏。
This will inevitably on their own turf fragile ecological environment caused tremendous damage.
然而，不管你是在山上，在海中还是在草地上，你应该意识到你对运动方式的选择也许会对环境造成很大影响。
However, whether you are on the mountains, in the waves, or on the grassland, you should be aware that your sport of choice might have great influence on the environment.
过度放牧是造成中国草地生态系统破坏的重要原因。
Overgrazing was found to be another important contributing factor in grassland degradation in China.
过度放牧是造成中国草地生态系统破坏的重要原因。
Overgrazing was found to be another important contributing factor in grassland degradation in China.
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