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[1]XIE Mengxia,GE Wenyan,HU Yaxian,et al.Spatiotemporal Characteristics of Climate Change in SCO Countries from 1901 to 2019[J].Research of Soil and Water Conservation,2022,29(02):320-329.

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Spatiotemporal Characteristics of Climate Change in SCO Countries from 1901 to 2019

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 02 Page number: 320-329 Column: Public date: 2022-03-20

Title:: Spatiotemporal Characteristics of Climate Change in SCO Countries from 1901 to 2019

Author(s):: XIE Mengxia¹, GE Wenyan^1,2, HU Yaxian^1,2, WANG Fei^1,2, HAN Jianqiao^1,2, LI Jian³; (1.Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China; 2.Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China; 3.Jinan Water Conservancy Engineering Service Center, Jinan 250099, China)

Keywords:: climate change; CRU; spatiotemporal variations; SCO

CLC:: P467

DOI:: -

Abstract:: In order to cope with and alleviate potential climate change in the region, it provides guidance for the high-quality development of the local ecological economy. The spatiotemporal variations of air temperature and rainfall in Shanghai Cooperation Organization(SCO)countries were analyzed based on the CRU grid datasets of monthly mean air temperature and rainfall from 1901 to 2019 by using methods of unary linear regression, 5-year moving average, the Pettitt test and other methods. The results showed that:(1)the annual average temperature and rainfall increased significantly from 1901 to 2019, with the change trend of 0.142℃/decade(p<0.05)and 2.395 mm/decade(p<0.05), respectively, and the most significant increase after 2000;(2)there were significant regional differences in the temperature change, which increased gradually from south to north along latitude, with rates <0.2℃/decade in most regions(p<0.05);(3)climate factors exhibited significant seasonal characteristics; the temperature displayed significant increasing trends in each season; the temperature rise rate in spring was 0.2℃/decade(p<0.05), while the temperature change in summer was minimum(0.08℃/10 a, p<0.05); the spring rainfall exhibited a significant increasing trend(0.75 mm/10 a, p<0.05), while the increasing trend of summer rainfall was insignificant(0.29 mm/10 a);(4)climatic change points in the SCO followed the rule of latitude differentiation, and times of change points were postponed with the increase of latitude and altitude. In summary, the climate of the SCO countries presented the warming and humidification trend. The climate change trend in spring was significantly higher than that in summer, and the temperature change trend was gradually accelerating with the increase of latitude. These results can provide theoretical support for future climate prediction and regional climate change.

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Last Update: 2022-04-20