【摘 要】
：
所有的文明首先都植根于我们的水土资源，超过1／3的陆地面积为干旱或半干旱地区，无论土地是被以早地方式或灌溉方式管理，水总是生存的关键。虽然在过去的90多年中，我们研究了在草地
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所有的文明首先都植根于我们的水土资源，超过1／3的陆地面积为干旱或半干旱地区，无论土地是被以早地方式或灌溉方式管理，水总是生存的关键。虽然在过去的90多年中，我们研究了在草地上从事放牧的结果，调查了植被与侵蚀和沉积物的关系，研究掌握了沉淀模式。然而，仍有许多?
All civilizations are rooted in our land and water resources first and more than one-third of the land area is arid or semi-arid. Water is always the key to survival regardless of whether land is managed early or irrigated. Although over the past 90 years we have studied the results of grazing on grassland, investigated the relationship between vegetation and erosion and sediment, and studied the pattern of precipitation. However, there are still many?
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