Structure and diversity of remnant natural evergreen broad-leaved forests at three sites affected by urbanization in Chongqing metropolis, Southwest China
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- 作者：Yongchuan Yang (1)
Michiro Fujihara (2)
Baizhan Li (1)
Xingzhong Yuan (3)
Keitarou Hara (4)
Liangjun Da (5)
Mizuki Tomita (4)
Yi Zhao (6) - 关键词：Landscape ; Conservation ; Heliophyte ; Inherent component ; Sprouting ; Fragmentation
- 刊名：Landscape and Ecological Engineering
- 出版年：2014
- 出版时间：January 2014
- 年：2014
- 卷：10
- 期：1
- 页码：137-149
- 全文大小：700 KB
- 作者单位：Yongchuan Yang (1)
Michiro Fujihara (2)
Baizhan Li (1)
Xingzhong Yuan (3)
Keitarou Hara (4)
Liangjun Da (5)
Mizuki Tomita (4)
Yi Zhao (6)
1. Key Lab of Three Gorges Reservoir Region’s Eco-Environment (Ministry of Education)/Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing, 400045, China
2. Graduate School of Landscape Design and Management, University of Hyogo/Awaji Landscape Planning and Horticulture Academy, 954-2 Nojimatokiwa, Awaji, Hyogo, 656-1726, Japan
3. College of Resources and Environment Science, Chongqing University, Chongqing, 400045, China
4. Department of Environmental Information, Tokyo University of Information Sciences, 4-1 Onaridai, Wakaba-ku, Chiba, 260-8501, Japan
5. Department of Environmental Science and Technology, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, China
6. Graduate School of Informatics, Tokyo University of Information Sciences, 4-1 Onaridai, Wakaba-ku, Chiba, 260-8501, Japan - ISSN：1860-188X
文摘
Evergreen broad-leaved forests (EBLFs, lucidophyllous forests) are vegetation types characteristic of East Asia. The extent of EBLFs has decreased significantly due to long-term anthropogenic disturbance, and remnant EBLFs in urban area are rare and important landscape types contributing to biodiversity and sustainable development. This study focuses on remnant EBLFs on Mt. Gele (GL), Mt. Tieshanping (TSP), and Mt. Jinyun (JY), located from the inner city to outskirts of Chongqing metropolis, Southwest China. Species of Theaceae, Lauraceae, Symplocaceae, and other families, which are essential floristic components of primary EBLFs, were still the main components at the three sites. GL and JY showed higher biodiversity, with richer heliophytes and shade-tolerant species, respectively. Castanopsis carlesii var. spinulosa was the sole dominant species at all three sites in woody layer, with codomination by Pinus massoniana and Cinnamomum camphora at GL and by Machilus pingii and Castanopsis fargesii at JY; these evergreen broad-leaved trees all showed inverse-J or sporadic-shaped size distribution with large numbers of small stems, but the conifer tree Pinus massoniana showed unimodal distribution with small stems at GL. The height growth of tree species, especially Castanopsis carlesii var. spinulosa, was increasingly restricted from JY to TSP to GL. Sprouting is an important life history strategy at community and population level, and differences were exhibited from GL to TSP to JY. A rural–urban gradient from JY to TSP to GL was indicated in this study. Species composition, biodiversity, and stand structure of these remnant EBLFs showed obvious differences along this gradient, and conservation responses to address the effects of urbanization need to be carefully considered.