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Journal of Desert Research ›› 2025, Vol. 45 ›› Issue (4): 285-294.DOI: 10.7522/j.issn.1000-694X.2025.00181

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Changes in landscape patterns and their driving factors of the typical dune alternated with meadow area in the Horqin Sandy Land

Haifu Fang1,2(), Yulin Li1(), Yanqing Li2,3, Yuyin Mo3, Jin Zhan4, Zhijia Luo3   

  1. 1.State Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands / Naiman Desertification Research Station,Northwest Institute of Eco-Environment and Resource,Chinese Academy of Sciences,Lanzhou 730000,China
    2.University of Chinese Academy of Sciences,Beijing 100049,China
    3.College of Environment and Resource,Guangxi Normal University,Guilin 541004,Guangxi,China
    4.Gansu Desert Control Research Institute,Lanzhou 730070,China
  • Received:2025-05-18 Revised:2025-06-30 Online:2025-07-20 Published:2025-08-18
  • Contact: Yulin Li

Abstract:

As a major ecologically fragile area, the landscape pattern changes in the typical dune alternated with meadow area in Horqin sand directly reflect the interaction between human activities and climate change. Based on the 2000-2020 land use dataset, this study extracted and analyzed the spatial and temporal dynamic characteristics and driving factors of the landscape pattern in the study area from 2000 to 2020, using rainfall, evapotranspiration, soil moisture, Water body area and population size as the driving factors, and using the ArcGIS and Fragstats software. The results show that grassland, unused or other land and cropland were the main landscape types(>93%)in the interspersed areas of dune alternated with meadow area in Horqin sand, the area of grassland and water area gradually decrease, landscape fragmentation increases, connectivity decreases, shape is relatively complex, and landscape heterogeneity shows a decreasing trend. climate change can change the spatial configuration of vegetation cover in the study area, which can lead to the transition of sandy landscapes from a continuous matrix to a fragmentation pattern; and demographic changes can increase the richness of landscape types through land-use diversification. Therefore, climate change and population change can jointly drive the transformation of the landscape pattern, clarify the spatial and temporal differences in the study area, optimize the landscape pattern, and provide technical support for the ecological strategy of sand control and prevention in the region.

Key words: Horqin Sandy Land, driving factor, landscape pattern, land use, spatial and temporal variation

CLC Number: