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中国沙漠 ›› 2023, Vol. 43 ›› Issue (2): 21-27.DOI: 10.7522/j.issn.1000-694X.2022.00101

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宁夏沿黄人工绿洲农田格局对景观多样性的影响——以卫宁平原灌区为例

乔荣荣1(), 黄海涛2, 董春媛3, 罗立辉4, 常学礼3()   

  1. 1.南京大学 生命科学学院,江苏 南京 210023
    2.山东省烟台第五中学,山东 烟台 264001
    3.鲁东大学 资源与环境工程学院,山东 烟台 264025
    4.中国科学院西北生态环境资源研究院,甘肃 兰州 730000
  • 收稿日期:2022-04-19 修回日期:2022-07-07 出版日期:2023-03-20 发布日期:2023-04-12
  • 通讯作者: 常学礼
  • 作者简介:常学礼(E-mail: xlchang@126.com
    乔荣荣(1995—),女,山东济宁人,博士研究生,主要从事生态遥感研究。E-mail: rongrongqiao@126.com
  • 基金资助:
    宁夏回族自治区重点研发计划项目(2021BEG02010);国家自然科学基金项目(41271193)

Analysis of the influence of farmland pattern on landscape diversity in artificial oasis along the Yellow River in Ningxiaa case study in Zhongwei-Zhongning Plain Irrigation District

Rongrong Qiao1(), Haitao Huang2, Chunyuan Dong3, Lihui Luo4, Xueli Chang3()   

  1. 1.School of Life Sciences,Nanjing University,Nanjing 210023,China
    2.Yantai No. 5 Middle School,Yantai 264001,Shandong,China
    3.School of Resources and Environmental Engineering,Ludong University,Yantai 264025,China
    4.Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
  • Received:2022-04-19 Revised:2022-07-07 Online:2023-03-20 Published:2023-04-12
  • Contact: Xueli Chang

摘要:

景观多样性是度量区域生态系统(土地利用/覆盖)类型数量和面积比例的集成指数,是景观生态学研究中使用频率最高的指数。农田作为干旱半干旱区人工绿洲的主要景观组成类型,是近半个世纪绿洲空间结构研究的焦点。本文采用2020年30 m分辨率的土地利用/覆盖数据,借助地理探测器模型的空间分异因子解释力(q统计量和Moving Window法分析了宁夏沿黄人工绿洲卫宁平原灌区农田格局对景观多样性的影响。结果表明:宁夏沿黄平原区景观多样性(LDI)变化受到了农田总面积(CA)和最大农田斑块指数(LPI)的显著影响,但是它们与斑块间距离(Enn_mn)和斑块类型周长-面积分维数(Pafrac)的交互作用更显著,大于其单独影响。农田总面积和最大农田斑块指数不同级别对LDI都有显著影响;斑块间距离和斑块类型周长-面积分维数分别为67~801 m(q>0.05)和0.142~1.060时对景观多样性影响差异不显著,不在此阈值范围内则对景观多样性有显著影响。

关键词: 地理探测器, 移动窗口法, 景观多样性, 农田格局, 绿洲

Abstract:

Landscape diversity is an integrated index to measure the type and area proportion of land use / cover in regional ecosystems and the most frequently used index in the research of landscape ecology. As the main landscape component of artificial oases in arid and semi-arid, farmland has been one of the focus of research on the spatial structure of oasis in the past half a century. Based on the land use/cover data with a spatial resolution of 30 m in 2020, this study used the spatial differentiation factor explanatory power (q-statistic) of the geodetector model and method of the moving window to analyze the influence of farmland pattern on landscape diversity in Weining plain irrigation district of artificial oasis along the Yellow River in Ningxia. The results showed that the change of landscape diversity (LDI) in plains along the Yellow River in Ningxia was significantly affected by farmland total area (CA) and largest patch index (LPI), and their interaction with patch euclidean nearest neighbor distance (Enn_mn) and perimeter-area fractal dimension (Pafrac) was more significant than that alone. The grading study of different farmland pattern index showed that CA and LPI at different grade had a significant effects on LDIEnn_mn and Pafrac between 67-801 m (q > 0.05) and 0.142-1.060, respectively, which do not differ significantly in their effect on LDI, while those not within this threshold had a significant effect on LDI.

Key words: geodetector, moving window, landscape diversity, farmland pattern, oasis

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