Journal of Guangxi Normal University(Natural Science Edition) ›› 2023, Vol. 41 ›› Issue (6): 202-210.doi: 10.16088/j.issn.1001-6600.2022101701

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Mitigation of Reserve on Karst Forest Landscape Fragmentation by Cropland Expansion

LIU Xuanyuan1, GUAN Chaoyi1, ZHANG Mingxia1*, ZHOU Qihai1,2*   

  1. 1. Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin Guangxi 541006, China;
    2. Guangxi Key Laboratory of Rare and Endangered Animal Ecology (Guangxi Normal University), Guilin Guangxi 541006, China
  • Received:2022-10-17 Revised:2023-01-10 Online:2023-11-25 Published:2023-12-04

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Abstract: Revealing the value of nature reserves in improving landscape pattern in land use can provide accurate information for land use decision-making and regulatory measures. Based on GLC_FCS30-2020 land-use data and a gradient stratification of “Encheng National Nature Reserve- County outside the Reserve” in Daxin County, Guangxi, the moving window method is used to analyze the influence of cropland expansion on karst forest landscape fragmentation. The results indicated that the reserve management was effective, with low forest fragmentation, high vegetation cover, and strong patch connectivity, whereas the fragmentation of cropland landscape was high. The forest cover outside the reserve was appopriate, the fragmentation of forest landscape was high, and the cropland patches were more agglomerated. The cropland expanded to the east, northeast, west and southwest, which resultsed into dramatic changes in the landscape pattern of land used. This study documented that natural reserves could mitigate the threat of the expansion of cropland in karst counties.

Key words: nature reserves, karst habitats, forest landscape, landscape fragmentation, cropland expansion

CLC Number:  S718.5;X180.44
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