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[1]CUI Guoyi,ZHANG Yan,CHAO Yang,et al.Land Use Change and Eco-Environmental Effects in Qinling Mountains in Recent 40 Years[J].Research of Soil and Water Conservation,2023,30(01):319-326.[doi:10.13869/j.cnki.rswc.20220301.002]

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Land Use Change and Eco-Environmental Effects in Qinling Mountains in Recent 40 Years

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 30 Number of periods: 2023 01 Page number: 319-326 Column: Public date: 2023-01-10

Title:: Land Use Change and Eco-Environmental Effects in Qinling Mountains in Recent 40 Years

Author(s):: CUI Guoyi¹, ZHANG Yan^1,2, CHAO Yang¹, ZHAO Yonghua^1,2, PAN Bohua¹; (1.College of Land Engineering, Chang'an University, Xi'an 710054, China; 2.Shaanxi Key Laboratory of Land Containment, Xi'an 710054, China)

Keywords:: land use change; ecological environment quality; hot spot analysis; Qinling Mountains

CLC:: F301.2; X171

DOI:: 10.13869/j.cnki.rswc.20220301.002

Abstract:: To explore the land use changes and ecological environment effects in the Qinling Mountains, based on the land use data of Qinling Mountains from 1980 to 2018, we used the methods of ecological environment quality index, geo-statistical analysis, hot spot analysis and other methods to study the temporal and spatial evolution characteristics of Qinling Mountains land use and the temporal and spatial differentiation of ecological environment effects, as well as the impact on the ecological environment and the quality of major land use transitions and their contribution rates. The results show that:(1)the area of cultivated land in the Qinling Mountains area continued to decrease by 427 km², the area of construction land sharply increased by 395 km², and the rest of the land types changed little;(2)the ecological environment quality index in the Qinling Mountains area was stable with range of 0.557～0.559, and it declined overall during the study period; the spatial distribution pattern showed the characteristics of ‘high in the middle and low in the north and south';(3)the improvement areas of ecological environment quality mainly distributed in 8 hot-spot areas including the northern part of Huayin City and the northern part of Shangnan County, and the ecological environment deterioration areas mainly distributed in Shangzhou District 10 cold-spot areas such as the southern part of the city and the northern part of Chang'an District;(4)the conversion of dry land into grassland, forest land and other ecological land was the main factor for the improvement of ecological environment quality; the degradation of forest land, conversion of grassland into dry land, and conversion of dry land into construction land led to the deterioration of ecological environment quality. The transformation of land use types is the main factor affecting the ecological environment effect, and the ecological restoration project implemented in the Qinling region has achieved certain results. In the ecological protection work of the Qinling Mountains, the construction land should be rationally developed, and the quality of the ecological land should be improved.

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Last Update: 2023-01-10