青藏高原生态环境变化趋势的初步探索

青藏高原是世界上环境最为脆弱的区域之一.本文在总结国内外文献的基础上详细介绍了高原气候、植被的年际变化,对气象数据做了不同角度的统计,采用遥感反演的方法对植被分布进行了计算.从计算的结果看近20年来高原植被变化并不十分明显,在全球性变暖的大背景下局部地区有增长的趋势,高原温度、降水、蒸发都在上升,这些因素对植被的生长都产生着重要的影响.

A Tentative Discussion on the Trend of Ecological Environment Change in Qinghai-Tibet Plateau

Qinghai-Tibet Plateau is one of the regions which are most sensitive to environmental changes. This paper has dealt in detail with climate and vegetation changes there, adopted some methods for analyzing meteorological data, and calculated vegetation indices from remote sensing data. The results show that the change of vegetation in this region is not very significant in the past 20 years, but with localized trend of acceleration under the background of global warming, and that temperature, rainfall, evaporation have all tended to rise, which affects plant growing seriously.