利用世界银行贷款灌溉农业二期项目江苏省项目区水环境评价

Water Environmental Assessment in Jiangsu Project of the Second Period Project Which Using Would Bank Loans for Agriculture Irrigation

对利用世界银行贷款灌溉农业二期项目(1998年—2002年)江苏省项目区的水环境进行了监测与评价。项目实施期间,对地表灌溉用水河段监测结果表明,各监测河段参评指标的单项污染指数及综合污染指数均小于1,地表灌溉水不构成单项指标污染和综合污染,其水质符合农业灌溉用水水质要求;对地表灌溉退水河段监测结果表明,退水河段中仅有部分监测指标比灌溉用水中的相应指标有所升高,但不构成综合污染,退水水质仍能满足其他地区农业灌溉用水水质要求;对地下灌溉水测井的监测结果表明,有个别地下灌溉井单项指标超标,但所测井的综合污染指数均远远小于1,对地下水环境未造成不利影响。

The water environment in Jiangsu project of the second period project (1998—2002) , which using Would Bank loans for agriculture rrigation, was evaluated. Monitroing results indicated that rivers which water were used for irrigation, their water's repective pollution index and comprehensive pollution index were both less than 1, so their water's quality meet the quality demand of irrigation water. Rivers, which irrigation water flow in, their water's quality were worse than irrigation water, but didn't get the comprehensive pollution level and can be used for irrigation. For underground water, monitoring results indicated that water's comprehensive pollution index was less 1, so the underground water environmental was good.