中国陆地表层自然地域系统动态及其驱动机制

Land surface, the environment where human survive and develop, is a synthesis formed with multi-scaled interactions between natural factors. The territorial system with spatially ordered distribution and temporally dynamic balance of the synthesis is known as land surface pattern, which is the core study field of physical geography. In the past century, natural variations and human activities have profound influences on land surface. How they drove the changed interactions between land surface factors, and further altered the land surface pattern, is the frontier and basis of global change studies. In this project, field survey, earth observation, station monitoring and mathematical simulation were combined to build the comprehensive database. The methodology of bottom-up and top-down was applied to conduct research on the following aspects: changes and interaction mechanism of key factors (i.e. water, soil, climate and biology) and their spatial-temporal variation; quantifying the influences of factor interactions on regionalization formation and conversion; quantified assessment on changing tendency and magnitude of land surface pattern under global climate change; accomplishment of dynamic land surface pattern at different past and future stages. The project can be helpful for developing theory of integrated physical geography, deepening cognition on dynamic land surface pattern, and providing scientific basis for regional sustainable resources utilization and countermeasure establishment of climate change adaptation.

陆地表层是众多自然要素相互作用而形成的一个多要素-过程-尺度耦合的综合体，是人类赖以生存和发展的环境。陆地表层格局是该综合体空间上有序分布、时间上动态平衡的地域系统，是自然地理学研究的核心内容。近百年来自然与人类活动，如何驱动陆地表层要素相互作用的效应发生变化，进而影响到整体格局的改变，是全球变化研究领域的一个前沿、基础科学问题。本项目以“地面调查+对地观测+台站监测+数理模拟”四位一体数据源和自上而下和自下而上相结合的方法论，重点研究：中国水、土、气、生等关键地理要素变化与相互作用机制及时空演化规律，量化关键要素相互作用对区域形成和变动的驱动作用；定量评估气候变化背景下陆地表层格局变动的趋势、幅度；完成过去及未来不同气候情景下陆地表层动态格局。研究将拓展综合自然地理学理论，深化对陆地表层格局动态的认识，为区域资源持续利用、制定气候变化适应对策提供科学依据。

陆地表层是众多自然要素相互作用而形成的一个多要素-过程-尺度耦合的综合体，是人类赖以生存和发展的环境。陆地表层格局是该综合体空间上有序分布、时间上动态平衡的地域系统，是自然地理学研究的核心内容。近百年来自然与人类活动，如何驱动陆地表层要素相互作用的效应发生变化，进而影响到整体格局的改变，是全球变化研究领域的一个前沿、基础科学问题。本项目以“地面调查+对地观测+台站监测+数理模拟”四位一体数据源和自上而下和自下而上相结合的方法论，重点研究了：中国水、土、气、生等关键地理要素变化与相互作用机制及时空演化规律，量化关键要素相互作用对区域形成和变动的驱动作用；定量评估了气候变化背景下陆地表层格局变动的趋势、幅度；完成过去及未来不同气候情景下陆地表层动态格局。研究拓展了综合自然地理学理论，深化对陆地表层格局动态的认识，为区域资源持续利用、制定气候变化适应对策提供科学依据。项目共发表论文53篇，其中SCI论文35篇，中文核心(CSCD)论文18篇。