前言

除了月球外,人类尚无法直接通过航天器获得太阳系其他天体的岩石样品,直到目前,采集降落到地表的陨石是获得地外岩石样品的唯一手段.陨石保存了太阳星云凝聚、行星堆积、地球等类地行星熔融分异等全部过程的信息.同地球上其他资源相比,陨石极为稀少而珍贵.自1969年日本南极考察队在南极大陆和山脉的蓝冰上发现9块陨石以来,人们认识到南极冰盖有利于陨石的长期保存,并存在陨石的独特富集机制,日本、美国、中国、欧盟等各国南极考察队共在南极大陆找到了约40000块陨石.南极大陆成为地球上迄今为止发现陨石最集中的区域.     

Preface

Humanity turns to a new chapter in 2022. As proud as we are of rapid developments in economics, science, and technology, we are equally concerned about such global issues as biodiversity conservation and the global pandemic of Covid-19. The unprecedented impact human activities have exerted on the global climate system is clearly underscored by the data from the World Meteorological Organization: The previous fifty years since 1970 have been the warmest of the past 2000 years.     

Preface

<正>China has a 5000 year history of agricultural civilization.Diversified natural and cultural features across regions have led to a variety of agricultural heritage systems,which continue to inspire sustainable development.In 2005,the Qingtian Rice-Fish Culture System was selected as one of the first Globally Important Agricultural Heritage Systems(GIAHS)pilot sites by the FAO,which opened new prospects for research and practiceon agricultural heritage conservation.This new period of research     

前言

北极地区近 3 0年来发生的海洋、大气、陆地、生态系统的快速变化 ,使得北极成为全球变化最敏感的地区之一 ,已引起国际社会的高度重视。我国地处易受气候自然灾害影响的脆弱地区 ,北极变化对我国气候和环境的影响不容忽视 ,迫切需要增强北极变化及其对我国气候和环境影响的评估和可预测性研究 ,为国民经济和社会的可持续发展提供科学依据。为了探索和了解北极地区气候环境的变化对我国的气候和环境产生作用的机理和后果 ,必须持续、稳定、系统地开展北极科学研究 ,增强对北极气候环境变化的认识 ,逐步形成我国的北极研究科学体系 ,满足社会…