生态脆弱区多年气候变化特征分析--以陕西榆林市为例

Analysis on Climatic Changes under Global Climatic Change——A Case Study of Yulin City

基于1974—2004年榆林市气温、降水等气象数据，对近30年来区域气候的年际、季节及各年代的气候变化进行了定量分析。结果表明：榆林市在20世纪70年代属偏冷湿时期，80年代为逐渐转暖的偏暖干时期，90年代为异常暖干时期，21世纪前四年气候较为暖湿。揭示区域气候变化，可以为榆林能源重化工基地产业发展的优化与调控、榆林市农业的可持续发展，以及生态环境脆弱地区能源与矿产资源开发对区域生态环境的影响研究提供重要的基础理论依据。

In this paper, the annual, seasonal and decadal climatic changes in Yulin Citywere analYzed by using climatic data during 1974 -2004. It was found that the climate was cold and humid comparatively in 1970＇s, the climate was warm and droughty comparatively in 1980＇s, the climate became warmer and doughtier in 1990＇s than before. In the first four years in 21st, the climate trended to be warmer and wetter. The Comprehensive analyses of climatic change could offer important guiding significance to construct the base of heavy - chemical engineering, accelerate the sustainable development of Yulin City.