Abstract：
In the 21st century, carbon dioxide emissions have led to adverse climate changes; meanwhile, the impact of climate change has imposed challenges worldwide, particularly in developing countries, and China is one of the most affected countries. Assessing the impact of climate change requires handling a large amount of data in the literature comprehensively. In this study, a text-based classification method and literature mapping were used to process the massive literature and map it according to its location. A total of 39,339 Chinese academic studies and 36,584 Chinese master\'s and doctoral theses, from 2000 to 2022, with evidence of the impact of climate change were extracted from the China National Knowledge Infrastructure database. Our results show that the literature on climate change impacts has exploded during the last decades. This indicates that increasing attention to the intensified impact of climate change in China has been paid. More importantly, by mapping the geolocation of the literature into spatial grid data, our results show that over 36.09% of the land area shows clear evidence of climate change. Those areas contribute to 89.29% of the gross domestic product (GDP) and comprise 85.06% of the population in China. Furthermore, the studies we collected on the climate change impacts showed a huge spatial heterogeneity. The hotspot areas of research were generally located in developed regions, such as the BTH urban agglomeration and Yangtze River Economic Zone, major agricultural production areas such as Shandong and Henan, and ecologically fragile regions including Yunnan, Xinjiang, and Inner Mongolia. Considering the imbalance spatially of the evidence of climate change can help in a better understanding of the challenges in China imposed by climate change. Appraising the evidence of climate change is of great significance for adapting to climate change, which is closely related to the natural ecosystem services and human health. This study will provide policy implications for coping with climatic events and guide future research.
摘要：
在21世纪,二氧化碳排放导致了不利的气候变化；同时，气候变化的影响给全世界带来了挑战，特别是在发展中国家，中国是受影响最严重的国家之一。评估气候变化的影响需要全面处理文献中的大量数据。在这项研究中,采用基于文本的分类方法和文献映射对海量文献进行处理，并根据其位置进行映射。共39339篇中国学术研究，36584篇中国硕士论文和博士论文，从2000年到2022年，从中国国家知识基础设施数据库中提取了气候变化影响的证据。我们的结果表明，在过去的几十年中，有关气候变化影响的文献激增。这表明中国对气候变化加剧的影响日益重视。更重要的是,通过将文献的地理位置映射到空间网格数据中，我们的结果表明，超过36.09%的土地面积显示出明显的气候变化证据。这些地区占国内生产总值（GDP）的89.29％，占中国人口的85.06％。此外，我们收集的关于气候变化影响的研究显示出巨大的空间异质性。研究的热点地区普遍位于发达地区,如BTH城市群和长江经济带，山东、河南等农业主产区，包括云南在内的生态脆弱地区，新疆,内蒙古。考虑到气候变化证据在空间上的不平衡，有助于更好地理解气候变化给中国带来的挑战。评估气候变化的证据对于适应气候变化具有重要意义。与自然生态系统服务和人类健康密切相关。这项研究将为应对气候事件提供政策启示，并指导未来的研究。
