温带草原区气候变化及其对植被影响的研究进展

为了深入研究温带草原区气候变化及其对自然-社会-经济系统的影响、系统响应及适应，回顾了温带草原区气候主要要素（如温度、降雨）与旱灾的变化及未来区域气候趋势预测等方面的研究进展，重点总结了气候变化对温带草原植被影响的最新研究成果。研究发现，温带草原区呈现总体气温明显升高，降水区域差异显著，干旱年份增多、旱灾增加的变化趋势。受此影响，植物物候、生理特征、生产力、覆盖度等发生明显的变化。最后指出，在气候变化核心要素预测、研究的时空尺度等方面还不完善，今后应重视开展大尺度气候变化的时空格局，微地形下气候变化的时空异质性等方面研究，同时加强气候变化对草原植被的影响与生态系统响应以及气候变化适应等方面的研究。

An Overview of Climate Change of Temperate Grassland and Its Impacts on Vegetation

In order to study climate change in temperate grassland systems and its response and adaptability, this paper reviewed the and its impact on nature-social-economic changes of drought and the main elements, such as temperature, precipitation in temperate grassland, and regional climate changes forecasting research. Then, the paper summedup the latest research about the impacts of climate change on temperate grassland vegetation. The study found that climate showed significantly higher temperature, more significant regional differences in precipitation, drought increasing, and the vegetation phenology, physical characteristics, productivity, NDVI changed significantly. However, there still existed much uncertainty in climate change forecast and its scale. Therefore, it was urgent to carry out research on climate change and its heterogeneity at large spatial-temporal scale. Besides, it also needed to further strengthen the impact of climate change and adaptation.