Grain-size Effect of Potential Ecological Spatial Network in Desert Oasis Ecotone

被引：0
|
作者：
Zhang Q. [1 ]
Liu D. [1 ]
Li Q. [2 ]
Yu Q. [3 ]
Song H. [1 ]
Li S. [4 ]
机构：
[1] School of Earth Science and Engineering, Hebei University of Engineering, Handan
[2] School of Landscape and Ecological Engineering, Hebei University of Engineering, Handan
[3] Beijing Key Laboratory of Precision Forestry, Beijing Forestry University, Beijing
[4] Planning and Design Institute of Forest Products Industry, State Forestry and Grassland Administration, Beijing
来源：
Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | 2022年 / 53卷 / 04期
关键词：
Dengkou County; Ecological spatial network; Grain-size effect;
D O I：
10.6041/j.issn.1000-1298.2022.04.021
中图分类号：
学科分类号：
摘要：
Scale problem is one of the core problems of landscape ecology, ecological spatial network is spatially represented as the mosaic of ecological source patch, ecological corridor and matrix landscape. Therefore, it will also be affected by the scale effect. Taking Dengkou County in the northeast edge of Ulanbuhe desert as the research area to study the grain-size effect of county ecological spatial network. The results showed that the change of grain-size had an obvious impact on the spatial and topological structure, area of ecological sources and spatial distribution of ecological network. But the grain-size effect of ecological resistance surface was not obvious. With the increase of grain-size, the area of ecological source patches fluctuated obviously and its shape became more and more broken. The length of ecological spatial network was increased at first and then decreased, its spatial distribution was changed from continuously dense to gradually sparse. The topological structure indexes of the ecological network was changed obviously. With the continuous increase of grain-size, the degree distribution of the network became more centralized, homogeneous, hierarchical and modular, the heterogeneity of the network continued to improve, the connectivity continued to decrease, and the overall changes trend were in a more unstable direction. This research showed that grain-size effect must be considered in the study of ecological spatial network. However, the causes of this effect and the method of selecting the optimal scale still needed further study. The research result can provide reference for the selection of research scale in relevant researches and the designation of county ecological protection measures. © 2022, Chinese Society of Agricultural Machinery. All right reserved.
引用
收藏
页码：199 / 207
页数：8
相关论文
共 29 条
  • [1] WEI Baojing, HU Xijun, ZHU Manle, Et al., Research hotspots and trends of China's green ecological network based on CiteSpace, Economic Geography, 41, 9, pp. 1-12, (2021)
  • [2] LIU Shiliang, HOU Xiaoyun, YIN Yijie, Et al., Research progress of landscape ecological network, Acta Ecologica Sinica, 37, 12, pp. 3947-3956, (2017)
  • [3] JONGMAN R H G, MART K, KRISTIANSEN I., European ecological networks and greenways, Landscape & Urban Planning, 68, 2-3, pp. 305-319, (2004)
  • [4] MIKEL G, PEDROJ L, GABRIELDEL B, Et al., GIS-based approach for incorporating the connectivity of ecological networks into regional planning, Journal for Nature Conservation, 18, 4, pp. 318-326, (2010)
  • [5] YUAN Shaoxiong, GONG Qinghua, CHEN Jun, Et al., Ecological network evaluation and ecological restoration suggestions of nature reserves in Guangdong Province, Tropical Geography, 41, 2, pp. 431-440, (2021)
  • [6] PASCUAL-HORTAL L, SAURA S., Comparison and development of new graph-based landscape connectivity indices: towards the priorization of habitat patches and corridors for conservation, Landscape Ecology, 21, 7, pp. 959-967, (2006)
  • [7] YU Qiang, YANG Lan, YUE Depeng, Et al., Research on spatial ecological network structure based on complex network analysis, Transactions of the Chinese Society for Agricultural Machinery, 49, 3, pp. 214-224, (2018)
  • [8] YU Q, YUE D, WANG Y, Et al., Optimization of ecological node layout and stability analysis of ecological network in desert oasis: a typical case study of ecological fragile zone located at Deng Kou County(Inner Mongolia), Ecological Indicators, 84, pp. 304-318, (2018)
  • [9] NIU Teng, YUE Depeng, ZHANG Qibin, Et al., Research on spatial structure and characteristics of potential ecological network, Transactions of the Chinese Society for Agricultural Machinery, 50, 8, pp. 166-175, (2019)
  • [10] WU J., Effects of changing scale on landscape pattern analysis: scaling relations[J], Landscape Ecology, 19, 2, pp. 125-138, (2004)
123