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[1]JIAN Qing,ZHANG Liqiang,ZHANG Pengtao,et al.Study on Landscape Ecological Risk Assessment and Spatial Differentiation of Qinglong Manchu Autonomous County Based on Explicit and Implicit Analysis[J].Research of Soil and Water Conservation,2018,25(06):228-235.

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Study on Landscape Ecological Risk Assessment and Spatial Differentiation of Qinglong Manchu Autonomous County Based on Explicit and Implicit Analysis

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 06 Page number: 228-235 Column: Public date: 2018-10-26

Title:: Study on Landscape Ecological Risk Assessment and Spatial Differentiation of Qinglong Manchu Autonomous County Based on Explicit and Implicit Analysis

Author(s):: JIAN Qing, ZHANG Liqiang, ZHANG Pengtao, ZHAO Li; College of Land and Resources, Agricultural University of Hebei, Baoding, Hebei 071001, China

Keywords:: landscape ecological risk assessment; explicit and implicit analysis; spatial auto-correlation; Qinglong Manchu Autonomous County

CLC:: Q149;X171

DOI:: -

Abstract:: Landscape ecological risk assessment can reveal the temporal and spatial variation of regional ecological risk, which is of great significance for the maintenance of regional ecological security and the optimization of environmental management. We selected different factors as evaluation indexes from the perspective of explicit about the landscape ecological risk to construct the landscape ecological risk evaluation index system. Combining with GIS, Geoda and other spatial analysis techniques, and taking Qinglong Manchu Autonomous County as the research area, we carried out the landscape ecological risk assessment and spatial correlation analysis to reveal the spatial and temporal distribution pattern of landscape ecological risk. The results showed that the fragmentation of landscape patches and other explicit risk were the direct cause of regional risk increase, while the implicit risks, such as the destruction of the stability of the ecosystem structure caused by human disturbance for a long time, were undoubtedly the inductive factors; during the 2001—2013, the overall landscape ecological risk in Qinglong Manchu Autonomous County declined, but the risk index was still at a higher level, and the characteristics of risk grade was high in the west and low in the east; there was a strong spatial auto-correlation between the landscape ecological risk indices during the study period, and HH clustering and LL clustering showed the increasing trend; through the analysis of the change of land type in the risk change areas, we could know that the forestland played an important role in the change of regional landscape ecological risk value, and the increase of forest land area effectively reduced the regional landscape ecological risk value, and the unused land also had an important influence on the change of ecological risk index, so the unused land should be controlled reasonably, timely and moderately. The results can provide the reference for landscape ecological risk management and ecological layout of land use in the study area and the similar areas.

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