[1]MENG Qing,BAI Hongying,GUO Shaozhuang.Spatial-temporal Variation of Precipitation in Qinling Area in Recent 50 Years Based on Anusplin[J].Research of Soil and Water Conservation,2020,27(02):206-212.
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Spatial-temporal Variation of Precipitation in Qinling Area in Recent 50 Years Based on Anusplin
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 02
Page number:
206-212
Column:
Public date:
2020-03-30
- Title:
- Spatial-temporal Variation of Precipitation in Qinling Area in Recent 50 Years Based on Anusplin
- Keywords:
- climate change; precipitation interpolation; Anusplin; Qinling area; spatial-temporal variation
- CLC:
- P426.61
- DOI:
- -
- Abstract:
- In order to evaluate the ecosystem in mountainous area precisely, the acquisition of precipitation grid data is particularly important. By using the data of precipitation in 31 meteorological stations in Qinling area from 1959—2015, the spatial-temporal variation of precipitation in Qinling region was studied based on the precipitation data interpolated by the professional meteorological interpolation software named Anusplin and made from Australia. The results were as follows. The change range of annual precipitation was 545.44 mm to 1 155.46 mm, and average rainfall was 824.76 mm. The average rainfall was 847.37 mm in the southern slope and 737.25 mm in the northern slope, and the difference of average precipitation between north and south slopes is 110.12 mm. The average precipitation in the four seasons in Qinling Mountains decreased in the order: summer(403.76 mm)>autumn(237.26 mm)>spring(169.11 mm)>winter(25.62 mm), and the precipitation in the southern slope was greater than that in the northern slope. Range of annual precipitation change rate was -3.02 mm/decade to 0.83 mm/decade in Qinling area from 1959 to 2015, and the regions with precipitation reduction mainly distributed in Taibai Mountain,which is the peak of Qinling Mountains and in Ankang in the southern slope of the Qinling Mountains, and the average elevation of these region is 1 177 m, while the regions with increased precipitation mainly distributed in the southern region of Qinling Mountains, Lueyang, Shangnan and Shiquan counties, and the average elevation of these regions is 811 m. The largest change rate reaching up to 0.83 mm/decade was found in Shangnan in the eastern part of Qinling Mountains.
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Last Update:
2020-02-25