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\begin{document}

\title{Spatial-temporal evolution of habitat quality in typical ecologically
fragile areas of western China over the past 40 years: A case study of
the Ningxia Hui Autonomous Region}



\author[1]{Ding Wang}%
\author[1]{Haiguang Hao}%
\author[1]{Lihui Sun}%
\author[1]{Hao Liu}%
\author[1]{Yuyang Li}%
\affil[1]{Chinese Research Academy of Environmental Sciences}%


\vspace{-1em}



  
  \date{June 16, 2024}


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\begin{abstract}
We use the InVEST model and five periods of land use data from 1980 to
2020 to assess the habitat quality of the Ningxia Hui Autonomous Region
in western China, which has characteristics of a typical fragile
ecosystem. We further analyze the spatial and temporal characteristics
of habitat quality evolution and its relationship with land use and
landscape pattern indices to explore the close relationship between
regional habitat quality changes and human natural resource conservation
and utilization.The research results show that the overall habitat
quality of Ningxia Hui Autonomous Region was stable and at a moderate
level during the 40 years from 1980 to 2020; Habitat patches with low,
high and very high quality occupy a larger proportion of the area,
followed by very low and moderate levels. There was a significant
spatial aggregation of high and low habitat quality in Ningxia, with
high values usually distributed in the northern and southern areas with
good natural conditions and low values distributed in areas with
frequent human activities and poor natural conditions. The decrease in
habitat quality in Ningxia was mainly due to the expansion of cultivated
land and construction land, the increase in landscape fragmentation and
the resulting decrease in connectivity. On the other hand, due to the
implementation of ecological protection measures, such as the project of
returning farmland to pasture and grass to forest, the quality of
habitats in Ningxia increased. The conclusions of this study support the
idea that the conservation of habitat quality in ecologically fragile
areas should fully preserve the original natural habitats and reduce the
interference of human activities. At the same time, targeted ecological
protection policies should be developed to restore the areas where the
habitat quality has been damaged and ultimately maintain the stability
of biodiversity and ecosystems in ecologically fragile areas.%
\end{abstract}%



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\textbf{Hosted file}

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\end{document}

