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这一方水土,得天独厚。在已完成土地质量地球化学调查的216.7万亩土地中,96.7%土地无重金属污染,13.3%土地为绿色优质耕地。作为重要饮用和工农业水源,区内地下水质量优良,98%的深层地下水和72%的浅层地下水可直接作为或处理后作为饮用水源,部分地段赋存优质矿泉水,地下水污染轻微。
中国地质调查局建议合理开发利用浅层地下水,将深层地下水作为城市应急供水战略储备资源,优先在白洋淀淀区适宜地段规划建设地下水应急供水水源地。目前白洋淀水每年向地下渗漏约1000万立方米。要加大流域污染防治和湿地生态恢复力度。
绿色低碳:
打造“地热雄安”
说起京津冀,人们最关心蓝天工程。好消息是雄安新区是我国中东部地热资源最丰富、开发利用条件最好的区域,充分利用地热资源,对绿色低碳城市建设具有重要意义。
雄安新区分布有三个大中型地热田,地下热水资源分布广、埋藏浅、温度高、储量大、水质优、易回灌。初步评估显示,在采灌均衡条件下,新区地下热水资源年可开采量折合标准煤220万吨,可满足约4000万平方米的建筑物供暖需求。
目前,区内分布有牛驼镇、高阳和容城三个大中型地热田,全区普遍适于利用地源热泵技术开发浅层地温能。三个地热田地下热水资源开发利用量仅占可采资源总量的6%,潜力巨大。全区普遍适于浅层地温能开发利用,年可开采量折合标准煤400万吨,可满足约1亿平方米建筑物供暖、制冷需要。“充分开发利用地热资源,对蓝绿交织、清新明亮绿色生态城市建设具有重要意义。”郝爱兵说。
责任编辑:刘敏丹 CN012
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