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为了解首都水源、风沙和周边地区的生态环境情况，推进首都生态保护圈的整治和建设，最近，我们会同河北省、北京市计委对首都西北周边地区生态环境整治情况进行了调研。考察了承德和张家口市的隆化、围场、丰宁。赤城、沽源、张北、万全、宣化、下花园、怀来、涿鹿等11个县（
In order to understand the ecological conditions of the capital’s water resources, wind-blown sand and surrounding areas and promote the renovation and construction of the capital’s ecological protection circle, we recently conducted an investigation into the remediation of the ecological environment in the surrounding areas of the capital northwest with the Planning Commission of Hebei and Beijing. Inspected Chengde and Zhangjiakou City, Longhua, yard, Fengning. Akagi, Guyuan, Zhangbei, Wanquan, Xuanhua, under the garden, Huailai, Zhuolu 11 counties (