Contour Farming Suitability of the Black Soil Region in Northeast China and Its Spatial Characteristics  

作　　者：LI Yong ZHENG Shufeng LIU Huanjun LUO Chong MENG Linghua WANG Yue WANG Liping 

机构地区：[1]School of Government,Heilongjiang University,Harbin 150080,China [2]State Key Laboratory of Black Soils Conservation and Utilization,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,China [3]School of Management,Shenyang Normal University,Shenyang 110034,China [4]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Geographical Science》2024年第6期1119-1133,共15页中国地理科学（英文版）

基　　金：Under the auspices of National Key R&D Program of China(No.2021YFD1500100);the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA28100400)。

摘　　要：Contour farming technology plays a key role in reducing soil erosion,enhancing water use efficiency,and fostering sustain-able agricultural development,Despite being a straightforward yet efficacious farming technique,it has not seen widespread implement-ation in China.Considering the deteriorating quality of arable lands in the Black Soil Region of Northeast China(BSR-NEC),it is ne-cessary to investigate spatial patterns and identify suitable areas for contour farming in this region.To achieve this objective,spatial autocorrelation and grouping analysis methods were employed to classify the land into four categories of suitability for contour farming:highly suitable,moderately suitable,generally suitable,and unsuitable.The results reveal that:1)the contour farming suitable area in BSR-NEC covers 89861.32 km^(2),accounting for 21.59%of arable land as of 2020.Heilongjiang Province owns the largest suitable area of 32853.68 km^(2),and Inner Mongolia has the highest proportion of 28.89%.2)In terms of the spatial distribution,regions with higher suitability for contour farming are concentrated in the Da Hinggan Mountains region,particularly Nenjiang City(Heilongjiang Province),which has the highest area of 2593.07 km^(2).Areas with a high proportion of suitable arable lands for contour farming are mainly found in the Da Hinggan Mountains and Changbai Mountains regions,with Ergun City(Inner Mongolia)having the highest pro-portion at 47.2%.Regions with higher suitability and proportion are concentrated in the Da Hinggan Mountains region,primarily cover-ing the Inner Mongolia and Heilongjiang.3)Regarding spatial clustering,both the area and proportion of suitable contour farming areas exhibit noticeable clustering effects,though not entirely consistent.4)Group analysis results designate 148 counties in BSR-NEC as highly suitable areas,predominantly located in the Changbai Mountains region,Liaodong Peninsula,Hulun Buir Plateau,and the north and south regions of the Da Hinggan Mountains.The zoning of suitable areas for co

关 键 词：contour farming spatial heterogeneity zoning policy spatial autocorrelation Black Soil Region of Northeast China(BSR-NEC) 

分 类 号：S315[农业科学—作物栽培与耕作技术]