| 摘要: |
| 本世纪以来,气候的暖干化趋势在北半球中纬度地区表现突出,对该地区水资源造成了一系列的影响,基于这一事实,本文主要考察了中亚干旱和半干旱地区内陆湖泊对气候变化的响应。研究表明,气候变化对湖泊影响主要有二种途径,其一是通过热量平衡影响湖泊水量收支中的支出项,即蒸发量;其二是影响湖泊收入项,即降水与地表径流。伊塞克湖以前者为主,青海湖以后者为主。在相同的气候变化背景下,不同湖盆形态的湖泊对此作出的响应不尽相同:湖盆浅平,以面积变化为主;湖盆深凹,则以水位变化为主。 |
| 关键词: 气候变化 湖泊水量收支 湖泊响应 中亚地区 |
| DOI：10.18307/1993.0203 |
| 分类号: |
| 基金项目:国家自然科学基金(No.948807) |
|
| THE RESPONSE OF INTERIOR LAKES TO CLIMATE CHANGE IN CENTRAL ASIA |
|
Qin Boqiang
|
|
Nanjing Institute of Geography Limnology, Academia Sinica, Nanjing 210008
|
| Abstract: |
| The climatic tendency of warming and drying since the beginning of this century has been shown distinctly in the mid-latitude zone of the North Hemisphere. It is of a series of impacts on the water resources system.especially in the arid or semi-arid regions. On the basis of this fact,the inland-lake changes in response to the climatic fluctuation are investigated. The comprehensive study shows that the general trend of the inland lake may be shrunk under warm and dry conditions. Further research of the impact of the changes in precipitation and temperature on the lake has been carried out,showing that the rise of temperature may cause an increase of the evaporation and runoff supplied by melting glacier,and that a decrease of precipitation may lead to reduction of the runoff and shrinkage of the lake area. Qinghai Lake is a typieal one which represents the lake evolution dominated by precipitation as well as Lake Issuk-kul dominated by temperature. |
| Key words: Climatic change lake water budget lake response Central Asia |
