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1南阳市水环境特征1．1水资源总量南阳市水资源,主要包括地表水资源和地下水资源二部分。地表水资源的多年平均总量为100．07×10~8m~3,扣除丹江、老灌河汇入丹江水库的18．01×10~8m~3和重复计算量,该市实际有水资源量多年平均为70．35×10~8m~3,人均790m~3。只占全国人均量的32．9％,属缺水地区。如何保护和利用有限的水资源,使其发挥最大的社会经济效益,已成为全社会关注的一个课题。
1 Nanyang City, the water environment characteristics 1.1 The total amount of water resources Nanyang City, water resources, including surface water resources and groundwater resources in two parts. The average annual total amount of surface water resources is 100.07 × 10 ~ 8m ~ 3, deducting 18.01 × 10 ~ 8m ~ 3 and repeated calculation of Danjiang and Laishui rivers entering Danjiang Reservoir. There are actually The average annual amount of water resources is 70.35 × 10 ~ 8m ~ 3, per capita 790m ~ 3. Only 32.9% of the national average, is a water-scarce region. How to protect and make use of the limited water resources to make the most of its social and economic benefits has become a topic of concern to the entire society.