<p style="border: 0px; color: #404040; font-variant-numeric: inherit; font-family: Helvetica, Arial, STHeiti, 华文黑体, "Microsoft YaHei", 微软雅黑, SimSun, 宋体, "WenQuanYi Micro Hei", sans-serif; font-size: 1rem; font-weight: bold; line-height: 1.75; margin-top: 28px; padding: 0px; vertical-align: baseline; background-color: #ffffff;">中国首都北京从2016年12月30日起开始的空气重度污染警报至今仍未解除。中国环保部部长陈吉宁周五（1月6日）晚主持新闻发布会，陈吉宁称，去年入冬以来，中国多个地区发生多起大面积、长时间的重污染过程，作为环保部长，看到雾霾天，也感到内疚和自责。</p><p style="border: 0px; color: #404040; font-variant-numeric: inherit; font-family: Helvetica, Arial, STHeiti, 华文黑体, "Microsoft YaHei", 微软雅黑, SimSun, 宋体, "WenQuanYi Micro Hei", sans-serif; font-size: 1rem; line-height: 1.75; margin-top: 18px; padding: 0px; vertical-align: baseline; background-color: #ffffff;">截至目前，北京持续空气重度污染已超过200小时，创造了历史纪录。</p><p style="border: 0px; color: #404040; font-variant-numeric: inherit; font-family: Helvetica, Arial, STHeiti, 华文黑体, "Microsoft YaHei", 微软雅黑, SimSun, 宋体, "WenQuanYi Micro Hei", sans-serif; font-size: 1rem; line-height: 1.75; margin-top: 18px; padding: 0px; vertical-align: baseline; background-color: #ffffff;">2012年3月，中国时任环保部长周生贤曾因在控制氮氧化物问题上没有完成任务向公众道歉。</p><p style="border: 0px; color: #404040; font-variant-numeric: inherit; font-family: Helvetica, Arial, STHeiti, 华文黑体, "Microsoft YaHei", 微软雅黑, SimSun, 宋体, "WenQuanYi Micro Hei", sans-serif; font-size: 1rem; line-height: 1.75; margin-top: 18px; padding: 0px; vertical-align: baseline; background-color: #ffffff;">陈吉宁是中国知名的环境科学家，2015年接替周生贤成为环保部长，此前曾担任中国清华大学校长。</p><figure style="border: 0px; color: #404040; font-variant-numeric: inherit; font-family: Helvetica, Arial, STHeiti, 华文黑体, "Microsoft YaHei", 微软雅黑, SimSun, 宋体, "WenQuanYi Micro Hei", sans-serif; font-size: 14px; line-height: inherit; margin: 24px -24.6449px 0px 0px; padding: 0px; vertical-align: baseline; background-color: #111111; clear: both;"><span style="border: 0px; color: inherit; font-style: inherit; font-family: inherit; font-size: 14px; font-weight: inherit; letter-spacing: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline; display: block; position: relative;"><img src="http://ichef.bbci.co.uk/news/624/cpsprodpb/742C/production/_93304792_037100956-1.jpg" datasrc="http://ichef.bbci.co.uk/news/320/cpsprodpb/742C/production/_93304792_037100956-1.jpg" alt="1月4日，两名头戴口罩的外国游客在北京天安门广场。北京正处于历史上最长的持续重度污染警报之中。" width="976" height="549" data-highest-encountered-width="624" style="color: #bdbdbd; font-style: inherit; font-family: inherit; font-weight: inherit; letter-spacing: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline; height: auto; max-width: 100%; user-select: none; width: 616.207px; transition: opacity 0.2s ease-in; display: block;" /><span style="border: 0px !important; color: inherit; font-style: inherit; font-family: inherit; font-size: 14px; font-weight: inherit; letter-spacing: inherit; line-height: inherit; margin: 0px; padding: 0px !important; vertical-align: baseline; clip: rect(1px 1px 1px 1px); overflow: hidden; position: absolute !important; height: 1px !important; width: 1px !important;">Image copyright</span><span style="border: 0px; color: #ececec; font-style: inherit; font-family: inherit; font-size: 0.875rem; font-weight: inherit; letter-spacing: 0.25px; line-height: 1.14286; margin: 0px; padding: 3px 8px 1px; vertical-align: baseline; text-transform: uppercase; background: rgba(0, 0, 0, 0.6); bottom: 0px; position: absolute; right: 0px;">AP</span></span><figcaption style="border: 0px; color: inherit; font-style: inherit; font-family: inherit; font-weight: inherit; letter-spacing: inherit; line-height: inherit; margin: 0px; padding: 16px; vertical-align: baseline; visibility: visible;"><span style="border: 0px !important; color: inherit; font-style: inherit; font-family: inherit; font-size: 14px; font-weight: inherit; letter-spacing: inherit; line-height: inherit; margin: 0px; padding: 0px !important; vertical-align: baseline; clip: rect(1px 1px 1px 1px); overflow: hidden; position: absolute !important; height: 1px !important; width: 1px !important;">Image caption</span><span style="border: 0px; color: #ececec; font-style: inherit; font-family: inherit; font-size: 0.75rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.33333; margin: 0px; padding: 0px; vertical-align: baseline; display: block;">1月4日，两名头戴口罩的外国游客在北京天安门广场。北京正处于历史上最长的持续重度污染警报之中。</span></figcaption></figure><figure style="border: 0px; color: #404040; font-variant-numeric: inherit; font-family: Helvetica, Arial, STHeiti, 华文黑体, "Microsoft YaHei", 微软雅黑, SimSun, 宋体, "WenQuanYi Micro Hei", sans-serif; font-size: 14px; line-height: inherit; margin: 24px -24.6449px 0px 0px; padding: 0px; vertical-align: baseline; background-color: #111111; clear: both;"><span style="border: 0px; color: inherit; font-style: inherit; font-family: inherit; font-size: 14px; font-weight: inherit; letter-spacing: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline; display: block; position: relative;"><img src="http://ichef.bbci.co.uk/news/624/cpsprodpb/1106C/production/_93304796_037074119-1.jpg" datasrc="http://ichef.bbci.co.uk/news/320/cpsprodpb/1106C/production/_93304796_037074119-1.jpg" alt="1月2日，北京上空的一架中国国航航班。中国环保部长承认北京的冬季污染基本没有什么改善。" width="976" height="549" data-highest-encountered-width="624" style="color: #bdbdbd; font-style: inherit; font-family: inherit; font-weight: inherit; letter-spacing: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline; height: auto; max-width: 100%; user-select: none; width: 616.207px; transition: opacity 0.2s ease-in; display: block;" /><span style="border: 0px !important; color: inherit; font-style: inherit; font-family: inherit; font-size: 14px; font-weight: inherit; letter-spacing: inherit; line-height: inherit; margin: 0px; padding: 0px !important; vertical-align: baseline; clip: rect(1px 1px 1px 1px); overflow: hidden; position: absolute !important; height: 1px !important; width: 1px !important;">Image copyright</span><span style="border: 0px; color: #ececec; font-style: inherit; font-family: inherit; font-size: 0.875rem; font-weight: inherit; letter-spacing: 0.25px; line-height: 1.14286; margin: 0px; padding: 3px 8px 1px; vertical-align: baseline; text-transform: uppercase; background: rgba(0, 0, 0, 0.6); bottom: 0px; position: absolute; right: 0px;">REUTERS</span></span><figcaption style="border: 0px; color: inherit; font-style: inherit; font-family: inherit; font-weight: inherit; letter-spacing: inherit; line-height: inherit; margin: 0px; padding: 16px; vertical-align: baseline; visibility: visible;"><span style="border: 0px !important; color: inherit; font-style: inherit; font-family: inherit; font-size: 14px; font-weight: inherit; letter-spacing: inherit; line-height: inherit; margin: 0px; padding: 0px !important; vertical-align: baseline; clip: rect(1px 1px 1px 1px); overflow: hidden; position: absolute !important; height: 1px !important; width: 1px !important;">Image caption</span><span style="border: 0px; color: #ececec; font-style: inherit; font-family: inherit; font-size: 0.75rem; font-weight: inherit; letter-spacing: inherit; line-height: 1.33333; margin: 0px; padding: 0px; vertical-align: baseline; display: block;">1月2日，北京上空的一架中国国航航班。中国环保部长承认北京的冬季污染基本没有什么改善。</span></figcaption></figure><p style="border: 0px; color: #404040; font-variant-numeric: inherit; font-family: Helvetica, Arial, STHeiti, 华文黑体, "Microsoft YaHei", 微软雅黑, SimSun, 宋体, "WenQuanYi Micro Hei", sans-serif; font-size: 1rem; line-height: 1.75; margin-top: 18px; padding: 0px; vertical-align: baseline; background-color: #ffffff;">陈吉宁在新闻发布会上承认，近几年中国冬季污染的问题确实没有很好解决。冬季的气象条件比想象的更不利，更复杂。</p><p style="border: 0px; color: #404040; font-variant-numeric: inherit; font-family: Helvetica, Arial, STHeiti, 华文黑体, "Microsoft YaHei", 微软雅黑, SimSun, 宋体, "WenQuanYi Micro Hei", sans-serif; font-size: 1rem; line-height: 1.75; margin-top: 18px; padding: 0px; vertical-align: baseline; background-color: #ffffff;">"虽然2016年北京PM2.5浓度比2015年下降9.9%，优良天数比例比2015年上升3.1个百分点，但最大的问题是，冬季改善的幅度非常小，甚至没有多少改善，"他说。</p><p style="border: 0px; color: #404040; font-variant-numeric: inherit; font-family: Helvetica, Arial, STHeiti, 华文黑体, "Microsoft YaHei", 微软雅黑, SimSun, 宋体, "WenQuanYi Micro Hei", sans-serif; font-size: 1rem; line-height: 1.75; margin-top: 18px; padding: 0px; vertical-align: baseline; background-color: #ffffff;">陈吉宁称当前冬季问题是中国大气污染治理的核心问题。他引用中国工程院的报告称，冬季气温北京偏高1.6度，小风和高湿概率逐年提高，这样的气候条件不利于污染物扩散，同时有利于PM2.5的生成。</p><p style="border: 0px; color: #404040; font-variant-numeric: inherit; font-family: Helvetica, Arial, STHeiti, 华文黑体, "Microsoft YaHei", 微软雅黑, SimSun, 宋体, "WenQuanYi Micro Hei", sans-serif; font-size: 1rem; line-height: 1.75; margin-top: 18px; padding: 0px; vertical-align: baseline; background-color: #ffffff;">"但不能寄希望明年会从暖冬变成冷冬，气象条件会有很大改善。"他说。</p><p style="border: 0px; color: #404040; font-variant-numeric: inherit; font-family: Helvetica, Arial, STHeiti, 华文黑体, "Microsoft YaHei", 微软雅黑, SimSun, 宋体, "WenQuanYi Micro Hei", sans-serif; font-size: 1rem; line-height: 1.75; margin-top: 18px; padding: 0px; vertical-align: baseline; background-color: #ffffff;">在被问到北京雾霾治理时间表时，陈吉宁表示很难给出时间表。他透露，中国珠三角地区2015年空气质量整体达标，是因为广东大概在2000年前后就开始考虑这个问题，用了十几年时间才取得今天的进步。</p>