• 论文 •

### 近57年甘孜州气候干湿状况的时空演变

1. 1.四川省甘孜州气象局，康定 626000；2.四川省阿坝州气象局，马尔康 624000；3.四川省气象台，成都610072；4.南方丘区节水农业研究四川省重点实验室，成都 610066
• 出版日期:2019-07-20 发布日期:2019-07-08
• 作者简介:王庆莉（1974-），高级工程师，从事农业气象服务和研究。E-mail：scwql3028@163.com
• 基金资助:
国家重点研发计划课题（2017YFC0504903）；高原与盆地暴雨旱涝灾害四川省重点实验室科技发展基金项目（省重实验室2018-重点-05-10）

### Temporal and Spatial Evolution of Climate Dry and Wet Conditions in Ganzi in the Past 57 Years

WANG Qing-li, HAN Yu-jiang, GUO Bin, WANG Ming-tian, RAN Wang-qun, CHEN Juan

1. 1.Meteorological Bureau of Ganzi Tibetan Autonomous Prefecture, Kangding 626000,China; 2.Meteorological Bureau of Aba Tibetan and Qiang Autonomous Prefecture, Maerkang 624000;3.Sichuan Meteorological Observatory, Chengdu 610072; 4.Sichuan Key Laboratory of Water-saving Agriculture Research in Southern Hill Areas, Chengdu 6l0066
• Online:2019-07-20 Published:2019-07-08

Abstract: Based on measured data from 1961 to 2017 in 18 national weather stations in Ganzi Tibetan Autonomous Prefecture, the monthly, seasonal and annual wetness index for Ganzi and its affiliated counties were counted according to the method described in Ecological quality Assessment Criteria of Meteorology.The spatial and temporal evolution characteristics of climate dry and wet were also analyzed in this study, which will provide scientific basis for drought prevention and mitigation and rational utilization of climate resources. The results showed: (1) the average wetness index of Ganzi in the past 57 years was between 0.67?1.33, the highest value was in 1965, and the lowest was in 1973. The seasonal average wetness index was between 0.07?1.86, the highest value occurred in summer, the second highest value occurred in autumn, and the lowest value occurred in winter; (2) The average wetness index of counties (cities) in Ganzi was between 0.23 and 1.73, which presented a large difference between the various regions.It seemed that the southeast and north was relatively humid and the southwest was relatively dry; (3) The annual climate change rate in Ganzi was 13.4mm·10y-1, the climatic tendency rate of the wetness index was -0.003·10y-1, and the climate tends to be weakly warm and dry. (4) The average wetness index of 2/3 counties (cities) in Ganzi was less than 1, which indicated that the seasonal drought characteristics was significant, and the ecological environment was fragile. Production practices should follow the principle of the combination of exploitation and protection. The drought prevention and mitigation, farmland water conservancy construction, and ecological restoration also should be strengthened during the production process.