Journal of Yangtze River Scientific Research Institute ›› 2021, Vol. 38 ›› Issue (9): 64-70.DOI: 10.11988/ckyyb.20200591

• WATER-SOIL CONSERVATION AND ECOLOGICAL RESTORATION • Previous Articles     Next Articles

Spatial and Temporal Characteristics of Landscape Pattern Dynamics and Stability in Liuyang River Basin in Recent Three Decades

WANG Zhi-qiang1,2, CAO Shan-hao1,3, ZHOU Yu-hang1, CAO Xiu-ting3, GAO Ye4, LIU Xian-zhao1   

  1. 1. Hunan Provincial Key Laboratory of Geo-information Engineering in Surveying, Mapping and Remote Sensing, Hunan University of Science and Technology,Xiangtan 411201, China;
    2. Hunan Provincial Key Laboratory of Coal Resources Clean Utilization and Mine Environment Protection,Hunan University of Science and Technology, Xiangtan 411201, China;
    3. Jiaxing Land and Space Planning Research Co., Ltd., Jiaxing 314050, China;
    4. Hunan Bureau of Hydrology and Water Resources, Changsha 410000, China
  • Received:2020-06-18 Revised:2020-11-06 Online:2021-09-01 Published:2021-09-06

Abstract: The aim of this study is to reveal the spatial and temporal changes of landscape stability in Liuyang River Basin. Remote sensing images of 1985, 2000, and 2015 were used to obtain the land use/cover types of three periods in the basin with the support of remote sensing and GIS technology. Hence, the landscape structure change, landscape stability, as well as the relation between them from 1985 to 2015 were analyzed by landscape analysis method. Research manifested that: 1) From 1985 to 2015, the overall landscape structure of Liuyang River Basin was characterized by increased-and-then-decreased fragmentation, patch edge complexity and landscape diversity, as well as human disturbance intensity and landscape aggregation degree in an opposite trend, implying that the landscape stability in the study area weakened but then improved. 2) The landscape stability is spatially heterogeneous, high in the east and south of the study area, while low in the middle and west. 3) The high-value correlation degree of forest land is the largest, followed by that of cultivated land, artificial surface, and water body in sequence, whereas the low-value correlation degree of artificial surface was the largest, followed by that of cultivated land, water body, and forest land in sequence. 4) Forest land is the key landscape to maintain the landscape stability of the basin. 5) Social economy and policy are the most important driving factors of landscape stability. The deterioration of landscape stability can be alleviated by effective policy regulation.

Key words: landscape pattern, landscape stability, spatial and temporal characteristics, remote sensing, GIS, Liuyang River Basin, human activities

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