“中国被低估了!”研究发现中国植树造林的碳吸收规模令人惊讶
BBC:中国植树造林的碳吸收作用“被低估了” 这一报告于10月28日发表在《自然》(Nature)科学期刊上,研究人员基于实地考察和卫星观测,分析出中国两个区域的新造树林吸收二氧化碳规模被低估了。 An international team has identified two areas in the country where the scale of carbon dioxide absorption by new forests has been underestimated. Taken together, these areas account for a little over 35% of China's entire land carbon "sink", the group says. 注:碳汇(carbon sink),是指通过植树造林、植被恢复等措施,吸收大气中的二氧化碳,从而减少温室气体在大气中浓度的过程、活动或机制。 而这两个被严重低估的碳汇地区,是中国的西南地区和东北地区。 The two previously under-appreciated carbon sink areas are centred on China's southwest, in Yunnan, Guizhou and Guangxi; and its northeast, particularly Heilongjiang and Jilin provinces. 中国新造树林的减碳能力令专家吃惊 这两个地区的造林绿化面积扩展得很快,其带来的减碳能力让外国专家意想不到。 These provinces have established a pattern of rapid afforestation of progressively larger regions, with provincial forest areas increasing by between 0.04 million and 0.44 million hectares per year over the past 10 to 15 years. 研究称,西南地区的陆地生物圈已成为中国最大的碳汇,约占中国陆地碳汇的31.5%,遥遥领先于其他地区。东北地区的生物圈则具有季节性,约占4.5%。 该研究的联合作者、英国爱丁堡大学的保罗·帕尔默教授(Prof Paul Palmer)表示,这些森林碳吸储库的规模虽然令人惊讶,但他指出,这个结论值得信赖。 他对BBC说: "Bold scientific statements must be supported by massive amounts of evidence and this is what we have done in this study." "We have collected together a range of ground-based and satellite data-driven evidence to form a consistent and robust narrative about the Chinese carbon cycle." 尽管二氧化碳排放量约占全球28%,但中国已宣布争取在2060年前实现碳中和。 China's increasing leafiness has been evident for some time. Billions of trees have been planted in recent decades, to tackle desertification and soil loss, and to establish vibrant timber and paper industries. 中国是全球变绿的重要力量 中国的净零排放目标,对全球的碳汇问题与气候变化都至关重要。 2019年,NASA曾发表报道称,与20年前相比,世界越来越绿了,而中国是促进这一改变的重要贡献者之一。 Data from NASA Earth satellites shows that human activity in China and India dominate this greening of the planet, thanks to tree planting & agriculture. Satellite data (2000–2017) reveal a greening pattern that is strikingly prominent in China and India and overlaps with croplands world-wide. 中国的绿化带是主导世界变绿的重要力量,即使在全球植被面积中占比不大,但增长速度在全球领先第一。 China alone accounts for 25% of the global net increase in leaf area with only 6.6% of global vegetated area. |