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在荒漠绿洲区,有水为绿洲无水为荒漠。自2000年黑河水量调度已长达12年,其下游(正义峡断面以下)额济纳绿洲生态得到一定程度的恢复,但对中游造成了很大的负效应,地下水位年下降1.0～1.5m,已经超过地下水生态水位,致使防风固沙林死亡面积达425km2,荒漠化面积增加了604km2,天然湿地每年以1%的速度萎缩,生态经济恶化,其结果张掖将是“第二个民勤”。实践表明,现行黑河调水方案极不合理,下游适宜的分水比应<50%,增加中游地表水用量至7.3亿m3,严格限制张掖绿洲地下水开采量,同时逐步由指标调度转向生态调度。强烈呼吁:有关部门主动而积极的修改黑河调水方案,不要再等20年使张掖变成民勤,再来治理。
In the desert oasis area, water is oasis waterless desert. Since the 2000 Heihe River water regulation has been carried out for 12 years, the ecological recovery of the Ejina Oasis in the lower reaches (below the Jixiaxia Section) has been resumed to a certain extent, but it has caused a great negative effect on the middle reaches. The groundwater table has been declining by 1.0 to 1.5 m in annual. Exceed the ecological level of groundwater, resulting in the death area of windbreak sand plant reached 425km2, desertification area increased 604km2, natural wetlands shrink by 1% annually, ecological and economic deterioration, the results of Zhangye will be “second Minqin ”. Practice shows that the current Heihe River water diversion program is extremely unreasonable, the appropriate downstream water ratio should be <50%, increase the amount of surface water to 730 million m3 in the middle reaches, and strictly restrict the exploitation of groundwater in Zhangye Oasis. Meanwhile, the indicators are gradually shifted to the ecological regulation. Strongly urged: Relevant departments take the initiative to actively amend the Heihe River water diversion plan, and do not wait for 20 years to make Zhangye into Minqin and then govern.