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[1]JIA Lianlian,GAO Haidong,FAN Bing,et al.Spatiotemporal Characteristics of Water-Wind Erosion Dynamics Over Northern China[J].Research of Soil and Water Conservation,2017,24(03):19-23.

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Spatiotemporal Characteristics of Water-Wind Erosion Dynamics Over Northern China

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 03 Page number: 19-23 Column: Public date: 2017-06-28

Title:: Spatiotemporal Characteristics of Water-Wind Erosion Dynamics Over Northern China

Author(s):: JIA Lianlian¹, GAO Haidong², FAN Bing¹, LI Zhanbin^2,3; 1. Upper and Middle Yellow River Bureau, Yellow River Conservancy Commission of the Ministry of Water Resources, Xi’an 710021, China;
2. State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an 710048, China;
3. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China

Keywords:: rainfall erosivity; wind erosion climatic factor; spatial-temporal characteristics

CLC:: S157.1

DOI:: -

Abstract:: 15 provinces in northern China were taken as the research samples, first of all, 349 stations of the meteorological data of long time series in the study area were collected, then the rainfall erosivity and wind erosion climatic erosivity were calculated, meanwhile, a systematic analysis of the temporal and spatial distribution pattern of wind and water erosion dynamics were carried out by the semivariogram and Gini coefficient as well as other indexes. The results showed that: (1) the average value of the rainfall erosivity in North China was 1 652.90 MJ·mm/(hm²·h·a) and the wind erosion climatic erosivity average reached 70.12; the rainfall erosivity distribution in space had a moderate variability, while wind erosion climatic erosivity presented a strong variation; (2) a strong spatial correlation appeared in the rainfall erosivity, while a moderate spatial correlation was found in the wind erosion climatic erosivity; the latter showed the overall performance where high in the north and the central, low in other region, while the spatial distribution of rainfall erosivity from the southeast to the northwest showed a decreasing trend; (3) the wind erosion climatic erosivity and the rainfall erosivity were obviously non synchronous. The distribution of the former was more uniform while extremely uneven for the latter. The research results could provide some references for the comprehensive management of the wind-water erosion crisscross region in North China.

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