Core Insights - The world is entering a new drought period, facing increasingly severe systemic drought risks that impact all sectors and economies globally [1][2] - Drought is no longer just an agricultural issue but a systemic risk affecting social structures and economies [1][2] Drought Characteristics - The frequency of global drought events has increased by 30% from 2000 to 2019, with higher intensity, broader impact, and greater unpredictability [2] - The phenomenon of "sudden drought" is particularly concerning, characterized by rapid onset and deterioration, often without sufficient warning [1][2] Economic Impact - Some countries experience annual losses from drought that can reach up to 10% of their GDP [2] - There is a shift in discussions about drought, focusing more on its economic consequences rather than just its impact on life and livelihoods [2] Response Strategies - Over 80 countries have developed drought response plans, but the challenge lies in effective implementation [2] - Emphasis on improving irrigation technology, promoting drought-resistant crops, and establishing early warning systems is crucial [2] - Transitioning from short-term emergency responses to long-term resilience building is essential [2] Collaborative Efforts - Drought management requires breaking down departmental barriers and fostering cross-level and cross-departmental cooperation among governments, communities, and nations [2] - China's experience in land restoration and drought-resistant technology is being applied in regions like Africa and Central Asia, enhancing international cooperation [3]

Core Viewpoint - The report highlights the urgent need for China to enhance its capacity to adapt to climate change due to the increasing frequency of extreme weather events exacerbated by global warming and El Niño effects [1] Group 1: Current Climate Challenges - In 2023, multiple regions in China experienced severe extreme weather events, including record-breaking rainfall and extreme heat, leading to significant impacts on urban areas [1] - The urbanization rate in China reached 67% by the end of 2024, meaning approximately 940 million people live in urban areas, which increases the potential for widespread disaster impacts during extreme weather [1] Group 2: Climate-Resilient Urban Development - Since 2017, China has initiated climate-adaptive city construction pilot projects in 28 cities, which have yielded positive results and valuable experiences [2] - The first batch of 39 cities has been selected to deepen climate-adaptive city construction, representing various scales and geographical regions, with the expectation of strong demonstration effects [2] Group 3: Systematic Urban Resilience Enhancement - Urban construction and operation must shift from traditional risk response strategies to systematic transformations that enhance resilience against climate risks [3] - Emphasizing natural solutions, such as green spaces and ecological management, is crucial for improving urban adaptability to climate change [3] Group 4: Multi-Stakeholder Engagement - Building climate-adaptive cities requires the involvement of various stakeholders, including government, social organizations, enterprises, and the public, to create a collaborative governance system [4] - Increasing public awareness and understanding of climate adaptation is essential for enhancing disaster preparedness and self-rescue capabilities among urban residents [4]

彼时的他可能不会想到，回国十余年后，通过团队自主研发的激光雷达系统，他在西藏，一个与加州气候迥异的 地方，发现了高达102.3米的西藏柏木，刷新按树种排名的世界最高树列表，他也成为亚洲第一高树的发现者。也 是得益于这项技术，郭庆华和团队成员首次对全国树木数量进行了精细测算并绘制出首张"树密度地图"——截至 2020年，全国约有1426亿棵树，平均树密度约为689棵/公顷。 如何数清中国到底有多少树木？如何数出一棵棵树？背后有哪些科技助力？近日，新京报记者专访了郭庆华，试 图找到问题的答案。 花十年时间，用卫星遥感"拼出"全国森林全景 一张中国地图上，分布着深深浅浅的绿色，可以明显看到，南部和东北部被绿色覆盖。这张看似不起眼的地图， 却是我国第一张"树密度地图"：它精准测算出了960万平方公里土地上的树木覆盖情况：截至2020年，全国约有 1426亿棵树，平均树密度约为689棵/公顷，相当于中国人均拥有约100棵树。 郭庆华团队绘制的我国首张"树密度地图"。受访者供图 这张图就"存放"在郭庆华办公室的电脑里，是他和团队成员十余年来潜心研究的成果之一。郭庆华告诉记者，这 张地图既包含了中国森林的整体分布情况，也涵 ...