水资源年际变化

1

黄河流域水资源年际变化很大，季节分布极为不均，水土流失严重，黄河多年平均含沙量高达37.6kg。

The water resources volume varies greatly between different years and seasons . Soil loss is severe in the Yellow River Basin with average sediment content of 37.6 kg m ~ ( - 3 ) .
2

结果表明，山东水资源量的年际变化大且呈快速下降态势，其中，地表径流量的下降尤为明显；

The results showed that the interannual change was great and water resources decreased rapidly , especially the amount of runoff .
3

我国辽西地区由于水资源年际、年内变化大、水量少、水污染严重，已经并将继续成为制约其生态、经济、社会发展的重要瓶颈因素之一。

Large variation , small quantity and severe pollution of water resources of western Liaoning province have already become one of the " bottle-neck " factors that restrict the development of ecology , economy and society of this area , and this situation will last for years .
4

我国水资源的地区分布与人口、土地资源的配置很不适应；水资源年际、年内变化大，水旱灾害频繁。

Incompatible distributions among water resource , population and land ;