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[1]BAI Yiru,RUAN Xiaohan,BAO Weibin,et al.Evaluation on Coupling of Vegetation and Soil on Slopes of Mountain Area in Southern Ningxia[J].Research of Soil and Water Conservation,2021,28(04):251-258.

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Evaluation on Coupling of Vegetation and Soil on Slopes of Mountain Area in Southern Ningxia

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 28 Number of periods: 2021 04 Page number: 251-258 Column: Public date: 2021-08-10

Title:: Evaluation on Coupling of Vegetation and Soil on Slopes of Mountain Area in Southern Ningxia

Author(s):: BAI Yiru^1,2, RUAN Xiaohan^1,2, BAO Weibin^1,2, WANG Youqi^1,2, XIA Zishu^1,2, YANG Fan^1,2; (1.College of Resources and Environment, Ningxia University, Yinchuan 750021, China; 2.Arid Area Characteristic Resources and Environmental Governance Department of Education International Cooperation Joint Laboratory, Yinchuan 750021, China)

Keywords:: mountain areas of southern Ningxia; soil desiccation; vegetation; coupling

CLC:: S154.4

DOI:: -

Abstract:: The purpose of the study is to realize the sustainable development of ecological environment and avoid the phenomenon of soil drying and vegetation degradation in the mountainous areas of southern Ningxia. Taking different land use types as research objects, we used AHP and entropy weight method to determine the weight of each soil and vegetation factor by establishing a two-level index system mainly composed of 11 vegetation factors and 14 soil factors. The coupling degree and coordination model were used to evaluate the degree of coupling and coordination between the vegetation and soil, and the CCA was used to analyze the correlation between the soil and vegetation factors. The results of the study showed that the D_c values of forest land, irrigated land, abandoned arable land, grassland and agricultural land were 0.446 0, 0.451 5, 0.505 9, 0.531 2 and 0.6 046, respectively, and the S(x)/P(y)values were 0.490 8, 0.593 4, 0.821 2, 0.874 3 and 1.187 4, respectively, which indicated that forest land and shrub were in imminent imbalance state, abandoned farmland and grassland were barely coordinated, and agricultural land was in primary coordinated state; the imminent imbalanced development model mainly distributed in the northeast and southwest, the barely coordinated development model distributed in the central and western regions, and primary coordinated development model scattered across the region. The CCA analysis showed that the soil desiccation index, relative moisture deficit index, average water content, clay content and bulk density had great influence on vegetation system. In summary, the results indicated that the coupling coordination degrees of farmland and grassland were better than those of woodland and shrub land in the mountainous area of southern Ningxia. Reasonable selection and collocation of forest and grass vegetation can ensure the coordinated development of regional vegetation-soil system.

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Last Update: 2021-08-20