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中国农学通报 ›› 2024, Vol. 40 ›› Issue (22): 53-65.doi: 10.11924/j.issn.1000-6850.casb2023-0625

• 林学·园艺·园林 • 上一篇    下一篇

平原地貌景观格局的空间幅度效应

林子航1(), 刘学录1, 李晓兵1,2()   

  1. 1 甘肃农业大学资源与环境学院,兰州 730070
    2 国家林草局驻西安专员办,兰州 730030
  • 收稿日期:2023-09-04 修回日期:2023-01-10 出版日期:2024-07-28 发布日期:2024-07-28
  • 通讯作者:
    李晓兵,男,1974年出生,甘肃兰州人,正高级工程师,硕士,主要从事自然资源资产调查及管理研究。通信地址:710048 陕西省西安市碑林区金花南路156号 国家林业和草原局驻西安森林资源监测监督专员办事处,E-mail:
  • 作者简介:

    林子航,男,1999年出生,海南海口人,在读硕士,主要从事景观生态学研究。通信地址:730070 甘肃省兰州市安宁区营门村1号 甘肃农业大学,E-mail:

  • 基金资助:
    甘肃省国土资源厅“多规合一背景下的生态型土地整治与生态屏障功能研究”(GAU-XZ-20160812)

Spatial Extent Effects of Plain Landscape Patterns

LIN Zihang1(), LIU Xuelu1, LI Xiaobing1,2()   

  1. 1 College of Resources and Environment, Gansu Agricultural University, Lanzhou 730070
    2 Commissioner’s Office of the State Forestry and Grass Administration in Xi’an, Lanzhou 730030
  • Received:2023-09-04 Revised:2023-01-10 Published:2024-07-28 Online:2024-07-28

摘要:

探究特定地貌景观格局空间幅度效应的最佳尺度,有助于为该地貌土地规划和管理决策提供科学依据。本研究选择黄淮海平原地区3个100 km×100 km的正方形区域为研究对象,采用2020年的Landsat-8遥感影像数据解译成土地利用类型图,通过计算景观格局指数和ArcGIS空间分析等方法,分析平原地貌景观格局的空间幅度效应及其变异规律。结果表明,相同地貌内的不同景观组分特征存在差异;3个研究区的景观格局均具有明显的空间幅度效应,随着空间幅度逐渐增大,景观格局的幅度效应逐渐减小并呈现平稳状态。在20~25 km幅度范围内,尺度效应差异最明显;在21~90 km或26~90 km幅度范围内,尺度效应差异较小;在大于90 km幅度范围内,幅度效应消失,表明90 km是大尺度范围下平原地貌研究景观格局的“临界阈”幅度。

关键词: 平原地貌, 景观格局, 景观指数, 空间幅度, 尺度效应

Abstract:

Exploring the optimal scale of the spatial extent effect of a particular landscape pattern helps provide a scientific basis for land planning and management decisions for that landscape. In this paper, three pieces of 100 km×100 km square areas in the Yellow Huaihai Plain were selected as research objects, and the Landsat-8 remote sensing image data of 2020 were used to interpret the land use type maps. The spatial extent effect of the landscape pattern of the plain landscapes and its variation pattern were analyzed by calculating the landscape pattern index and conducting ArcGIS spatial analysis. The results showed that there were differences in the characteristics of the different landscape components within the same landscape. The landscape patterns in the three study areas all had obvious spatial extent effects, and with the increase of spatial extent, the extent effects of the landscape patterns gradually decreased and showed a stable state. Within the range of 20 km to 25 km, the difference in extent effect was most obvious; in the range of 21-90 km or 26-90 km, the difference in extent effect was smaller; the extent effect disappeared at the range greater than 90 km, suggesting that 90 km was the ‘critical threshold’ extent for the study of landscape patterns of plains landscapes at large scales.

Key words: plain landscapes, landscape patterns, landscape indices, spatial extent, scale effect