青海省位于青藏高原东北部,总面积72。23万平方公里,平均海拔超过3000米,是长江、黄河和澜沧江的发源地,被誉为“三江源”“中华水塔”,气候以高寒干旱为总特征,具有年平均气温低、日温差大、降雨少而集中、地域差异大、日照时间长、太阳辐射强等特点,该地区气象灾害频发,是我国西北部生态环境脆弱、社会经济发展缓慢的地区,也是我国乃至东亚气候与环境变化的“敏感区”和“脆弱带”,其生态系统属于中国“生态源”的重要组成部分和重要的碳汇,具有维系国家生态安全的重要作用。未来,青海省气温将持续上升,极端事件高温和强降水事件增加,气候风险不容忽视,需加大生态环境保护力度。
<<Qinghai province located in the northeastern Qinghai-Tibet Plateau,with a total area of 722300 square kilometers and an average altitude of over 3000 meters,is the birthplace of the Yangtze,Yellow and Lantsang rivers,and reputed as the “China Water Tower”. The climate generally characterized with alpine-cold and arid,is featured as:low annual mean temperature,considerable diurnal temperature range,less but concentrated rainfall,large geographical differences,long sunshine duration and strong solar radiation among others. Due to frequent meteorological disasters,Qinghai is a region with vulnerable ecological environment and slow social and economic development in northwestern China,and also a “sensitive area” and a “vulnerable zone” to the changing climate and environment in China and even in East Asia. Its ecosystem,which is an important component of China’s “ecological source” and an important carbon sink,plays an important role in maintaining national ecological security. In the coming future,Qinghai will be faced with non-negligible climate risks due to the increasing air temperature and extreme climate events,such as heat wave and heavy precipitation. Therefore,we have to work harder to protect ecological environment.
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