Changes of spring wind erosion based on wind erosion climate factor in the black soil region of Northeast China
作者机构：Heilongjiang Institute of Meteorological SciencesHarbin 150030China Innovation and Open Laboratory of Eco-meteorology in Northeast ChinaChina Meteorological AdministrationHarbin 150030China Heilongjiang Ecological Meteorological CenterHarbin 150030China
出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)
年 卷 期：2023年第20卷第6期
页 面：1712-1724页
核心收录：
学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 070601[理学-气象学] 09[农学] 0903[农学-农业资源与环境] 0706[理学-大气科学] 090301[农学-土壤学]
基 金：supported by the Open Research Fund of Innovation and Open Laboratory of Eco-meteorology in Northeast China,China Meteorological Administration(stqx2019zd02) Heilongjiang Meteorological Science and Technology Research Project(HQGG202004) Heilongjiang Provincial Natural Science Foundation of China(LH2020C105)
主 题：Wind erosion climate erosivity Spatiotemporal 1characteristics Climate change Rebounded trend Typical black soil region Northeast China
摘 要：The dry and windy climate and low ground cover in spring in the black soil region of Northeast China make the soil strongly affected by wind erosion,which seriously threatens the food security and ecological security of this *** this paper,based on the daily observation data of 124 meteorological stations in study area from 1961 to 2020,seasonal and monthly wind erosion climate factor(C)in spring(March to May)were calculated by using the method proposed by the Food and Agriculture Organization of the United Nations(FAO),the wind erosion characterization in spring were systematically analyzed based on C by various statistical analysis *** results showed that in the past 60 years,spring wind erosion climate factor(CSp)and monthly C of the whole region and each province(region)all showed highly significant decreasing trend,but they began to show rebounded trend in the middle or late *** of the study area showed a significant upward trend since 2008 with an increase of 4.59(10a)^(-1).The main contributors to this upward trend are the changes of C in March and in *** the four provinces(regions),CSp in Heilongjiang,Jilin,Liaoning and eastern Inner Mongolia all showed rebounded since 2008,2011,2008 and 2009,*** rebounded trend of CSp in eastern Inner Mongolia was the most obvious with a tendency rate of 11.27(10a)^(-1),and its mutation occurred after *** rebound trend of CSp in Heilongjiang Province takes the second place,with a trend rate of 4.72(10a)^(-1),but there’s no obvious time mutation *** spatial characteristics of CSpand monthly C are similar,showing decreasing characteristics centered on the typical black soil belt of Northeast *** with 1961-1990,in the period from 1991 to 2020,the proportion of high value areas(CSp35,monthly C10)has decreased to varying degrees,while the proportion of low value areas(CSp≤10,monthly C≤4)has *** trends of seasonal and monthly C in 82.2%~87.7%of the
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