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Published on: October 7, 2018
[Analysis of urban forest landscape pattern in Hefei]
Zemin Wu1, Wenyou Wu, Jian Gao
1Forestry Faculty of Anhui Agricultural University, Hefei 230036, China. wuzemin@mail.hf.ah.cn
Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology
|March 23, 2004
Summary
Urban forest patches in Hefei are predominantly small, limiting habitat diversity. The study suggests creating larger forest areas to improve urban ecological functions and support biodiversity.
Area of Science:
- Landscape Ecology
- Urban Ecology
- Remote Sensing
Context:
- Analysis of landscape patterns in a 17.6 km2 urban area in Hefei using RS, GPS, and GIS.
- Identification of five major landscape elements: building/pavement, water, road, urban forest, and general green land.
- Building and pavement surfaces dominate (73.13%), with roads as corridors (6.89%).
Purpose:
- To provide a comprehensive method for studying urban forest structure and its role in environmental improvement.
- To analyze the landscape pattern and characteristics of urban forests in downtown Hefei.
- To introduce and apply the concept of interior habitat for urban forest patches.
Summary:
- Urban forests constitute 9.18% of the area, with 408 patches averaging 0.396 hm2; 48% are small (<500 m2).
- General green land and water bodies occupy 2.26% and 8.54% respectively.
- Low landscape diversity indices (Shannon-Weiner: 0.928, evenness: 0.576) were observed.
Impact:
- The study identified a critical interior habitat threshold of 9800 m2, with only 19.7% of urban forest area meeting this criterion, indicating insufficient habitat for species diversity.
- A proposed scale system for urban forest patches (small, middle, large, extra-large) suggests an ideal ratio of 2:2:2:3.
- Recommendations include increasing larger forest patches (1.5-3.0 hm2) and prioritizing establishment in the northeastern city area to enhance ecological functions.
