天山北麓500年来环境演变及其对人类活动的影响

Environment Change Near the Northern Piedmont of Tianshan Mountain During the Last 500 Years And Its Effects on Human Activities

文章在分析前人研究成果的基础上,总结归纳出天山北麓500年来温度、湿度以及温湿组合演变的基本规律,500年来天山北麓地区的环境演变大致经历了三个冷暖期以及四个湿润期和三个干旱期的交替,主要以冷湿、暖干的气候类型交替出现。在此基础上,笔者探讨了气候变化对干旱地区绿洲生态系统的稳定、灌溉农业的发展,水资源和环境以及灾害及其防治等方面的影响,认为气候变化有利于该地区水资源的利用,但也给部分地区带来了比较严重的洪涝灾害。

This paper analyses the studies of China＇s researchers on climate o! the northern piedmont of Tianshan Mountain during the little ice age. On this basis the author has summarized the basic law of the temperature , humidity and mixture of temperature and humidity in the northern piedmont of Tianshan Mountain during the last 500 years. There are three warm periods and cool periods, and four wet periods and three dry periods alternatively in the northern piedmont of Tianshan Mountain. The climatic change is main alternation of cool wet period and warm dry period. Finally, the author discusses that influences in oasis ecosystem stability of arid area, the development of irrigated agriculture, water resources, environmental calamity and prevention of eavironment calamity. And the author suggests that thought that climatic change is favorable to the use of the water resources in this region, but has brought more serious floods to some areas.