[1]ZHU Meng,ZHOU Zhongfa,JIANG Yi,et al.Spatial and Temporal Heterogeneity of Precipitation Based on the Landforms of Guizhou Plateau[J].Research of Soil and Water Conservation,2020,27(03):181-189.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 03
Page number:
181-189
Column:
目次
Public date:
2020-04-20
- Title:
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Spatial and Temporal Heterogeneity of Precipitation Based on the Landforms of Guizhou Plateau
- Author(s):
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ZHU Meng1,2, ZHOU Zhongfa1,2,3, JIANG Yi1,2, HUANG Denghong1,2,3
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(1.Karst Research Institute/Department Geography And Environment Sciences, Guizhou Normal University, Guiyang 550001, China; 2.State Key Laboratory Incubation Base for Karst Mountain Ecology Environment of Guizhou Province, Guiyang 550001, China; 3.State Engineering Technology Institute for Karst Desertification Control, Guiyang 550001, China)
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- Keywords:
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precipitation; landform zoning; remporal and spatial heterogeneity; Guizhou Province
- CLC:
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P426.6
- DOI:
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- Abstract:
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In order to explore the spatial and temporal heterogeneity of precipitation and the influencing factors in areas with different geomorphic types, the 68-year data of the precipitation, temperature and humidity in 19 meteorological stations in Guizhou Province were taken as data sources. Taking into account different elevations, longitudes and latitudes for the influence of precipitation, we used Mann-Kendall nonparametric mutation detection, sliding average and anomaly cumulative analysis trend, and inverse distance weight interpolation method to express the precipitation of different geomorphological types and the spatial distribution characteristics of each impact factor. The results show that:(1)the precipitation in Guizhou Province has been generally declining, the temperature has been rising in the long time series, the relative humidity decline rate is greater than the precipitation decline rate;(2)the precipitation is positively correlated with the temperature, and the precipitation in the non-karst landform shows a slight upward trend, the a downward trend for the peak cluster depressions, karst troughs, karst fault basins, karst plateaus and karst gorges, and the rates of decline are different. The rates decrease in the order: karst fault basin>karst plateau>karst canyon>karst trough>peak cluster depression;(3)in non-karst, peak cluster depression, karst trough, karst fault basin and karst plateau, two wet periods were found in the periods of 1967—1980 and 1993—2000, three dry seasons occurred in the periods of 1951—1960, 1985—1992 and 2005—2018, while the precipitation in the karst gorge area is greater than the average, the precipitation is abundant, there is no obvious dry period;(4)except peak cluster depression, the mutation points in non-karst, karst troughs, karst fault basins, karst plateaus, and karst gorges occurred in 2013, 1984, 1986, 1980, and 1986, respectively, there is a significant mutation in annual precipitation;(5)precipitation is positively correlated with longitude in terms of the spatial characteristics, and negatively correlated with latitude and altitude; with respect to the spatial distribution characteristics of precipitation on different geomorphic units, the volumes of precipitation increase in the order: karst plateau <karst gorge <karst trough <non-K< peak cluster depression <karst fault basin. Understanding the temporal and spatial characteristics of precipitation in different geomorphological areas and their changing patterns can provide the scientific basis for natural disaster warning caused by precipitation.