With global resource shortage, the constant deterioration of the ecological environment, survived and brought a series of influence and challenge for the mankind.
随着全球资源短缺，生态环境的不断恶化，给人类生存带来了一系列的影响与挑战。
2
Recently, serious degradation and constant rodents and pests in grassland cause severe deterioration of ecological condition.
近些年来，新疆畜牧草场严重退化，鼠虫害此起彼伏，导致生态环境严重恶化。
3
The main reasons for this are constant population increase, constantly enlarged cultivation of land against population pressure and the resultant severe ecological degeneration.