Jiayinaguli·Wozhatihan,Batur·Bake,WU Yanfeng,et al.Spatiotemporal Characteristics of Potential Evapotranspiration in Tajikistan in the Past 100 Years[J].Research of Soil and Water Conservation,2015,22(01):280-285,291.
近百年塔吉克斯坦潜在蒸散量时空分布特征
- Title:
- Spatiotemporal Characteristics of Potential Evapotranspiration in Tajikistan in the Past 100 Years
- 关键词:
- 潜在蒸散量; 时空变化; Mann-Kendall法; 小波分析; 塔吉克斯坦
- Keywords:
- potential evapotranspiration; spatial and temporal variation; Mann-Kendall method; wavelet analysis; Republic of Tajikistan
- 分类号:
- P333.1
- 摘要:
- 利用塔吉克斯坦百年逐月潜在蒸散量资料，以线性趋势分析、滑动平均、Mann-Kendall法、小波分析法以及Kriging插值法对潜在蒸散量的时空变化进行了分析。结果表明：（1）在时间变化上，塔吉克斯坦百年潜在蒸散量总体上呈微弱的减少趋势，气候倾向率为-1.25 mm/10 a，其中夏季的值最大，冬季的值最小；除了秋季和冬季以外的春季、夏季以及年潜在蒸散量都发生突变；年平均和春季潜在蒸散量都存在30 a的准变化周期，夏季存在24 a的准变化周期，秋季存在7 a的准变化周期，冬季存在21 a的准变化周期。（2）在空间变化上，塔吉克斯坦百年年平均和四季潜在蒸散量呈西部向东部递减的特征，年潜在蒸散量的变化范围为653.19～1 324.12 mm，其中1901—1930年塔吉克斯坦大部分地区潜在蒸散量增加较为明显；而1991—2011年塔吉克斯坦大部分地区减少趋势最为明显。
- Abstract:
- Based on the monthly potential evapotranspiration data during 1901 to 2011 in Republic of Tajikistan, the spatiotemporal characteristics of precipitation variation were analyzed by using the linear trend analysis, wavelet analysis, Mann-Kendall method, and the Kriging interpolation. The results showed that: (1) from the temporal change perspective, the annual potential evapotranspiration declined significantly during the past 100 years, with a rate of -1.25 mm/10 a, peaked in the summer and decreased to a minimum in the winter. The potential evapotranspiration in spring and summer and annual potential evapotranspiration presented abrupt change except for fall and winter; the annual potential evapotranspiration and the potential evapotranspiration of spring, summer, autumn and winter had a 24 years, 24 years, 30 years, 7 years and 21 years periodicity, respectively. (2) from the spatial change perspective, the annual potential evapotranspiration had a decreasing trend from west to the east of Tajikistan, ranging from 653.19 to 1 324.12 mm.The potential evapotranspiration in 1901—1930 increased significantly in most regions of Tajikistan and the potential evapotranspiration 1991—2011 decreased significantly in most areas.
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备注/Memo
收稿日期:2014-05-08;改回日期:2014-08-11。
基金项目:国家国际科技合作计划资助（2010DFA92720-13）；新疆维吾尔自治区土壤学重点学科资助
作者简介:加依娜古力·窝扎提汗(1988-),女(柯尔克孜族),新疆塔城人,硕士研究生,研究方向为气候变化。E-mail:jiayinagul7013@163.com
通讯作者:巴特尔·巴克(1973-),男(维吾尔族),新疆莎车县人,教授,研究方向为干旱区生态与环境。E-mail:bateerbake@163.com