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干旱区科学  2011, Vol. 3 Issue (4): 254-260    DOI: 10.3724/SP.J.1227.2011.00254
  学术论文 本期目录 | 过刊浏览 | 高级检索 |
Altitudinal patterns of stand structure and herb layer diversity of Picea schrenkiana forests in the central Tianshan Mountains, Northwest China
LiPing LI1,2*, XiangPing WANG3, Stefan ZERBE2, LiYun ZHANG4, JingYun FANG1
1 Department of Ecology, College of Urban and Environmental Sciences & Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing 100871, China;
2 Faculty of Science and Technology, Free University of Bolzano, Bolzano 39100, Italy;
3 The Key Laboratory of Silviculture and Conservation of the Ministry of Education, College of Forestry, Beijing Forestry University, Beijing 100083, China;
4 Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
Altitudinal patterns of stand structure and herb layer diversity of Picea schrenkiana forests in the central Tianshan Mountains, Northwest China
LiPing LI1,2*, XiangPing WANG3, Stefan ZERBE2, LiYun ZHANG4, JingYun FANG1
1 Department of Ecology, College of Urban and Environmental Sciences & Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing 100871, China;
2 Faculty of Science and Technology, Free University of Bolzano, Bolzano 39100, Italy;
3 The Key Laboratory of Silviculture and Conservation of the Ministry of Education, College of Forestry, Beijing Forestry University, Beijing 100083, China;
4 Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
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摘要 Altitude is a useful indicator to examine patterns of forest structure and species diversity in relation to environmental factors. In this study, the altitude patterns of forest stand structure and species diversity were analyzed across 20 plots in the Tianchi Nature Reserve, Northwest China. The results showed that mean stem height (Hm), maximum stem height (Hmax) and mean stem diameter at breast height (Dm) of Picea schrenkiana trees all decreased significantly with increasing altitude. Potential tree height (H*) decreased while stem taper increased significantly as altitude increased, suggesting remarkable altitudinal changes in biomass allocation between the diameter and height growth of Picea schrenkiana. Understory herbaceous richness increased significantly with increasing altitude, or with decreasing total basal area (TBA), Hm and stand volume (Volume). High light availability for understory herbs might account for the higher species richness at high altitude. Sorensen Index decreased significantly with the increase in altitude intervals, while the Cody Index demonstrated a converse pattern, suggesting greater differences in species composition with larger distances.
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LiPing LI
XiangPing WANG
Stefan ZERBE
LiYun ZHANG
JingYun FANG
关键词:  NDVI  temperature  precipitation  correlation  scale    
Abstract: Altitude is a useful indicator to examine patterns of forest structure and species diversity in relation to environmental factors. In this study, the altitude patterns of forest stand structure and species diversity were analyzed across 20 plots in the Tianchi Nature Reserve, Northwest China. The results showed that mean stem height (Hm), maximum stem height (Hmax) and mean stem diameter at breast height (Dm) of Picea schrenkiana trees all decreased significantly with increasing altitude. Potential tree height (H*) decreased while stem taper increased significantly as altitude increased, suggesting remarkable altitudinal changes in biomass allocation between the diameter and height growth of Picea schrenkiana. Understory herbaceous richness increased significantly with increasing altitude, or with decreasing total basal area (TBA), Hm and stand volume (Volume). High light availability for understory herbs might account for the higher species richness at high altitude. Sorensen Index decreased significantly with the increase in altitude intervals, while the Cody Index demonstrated a converse pattern, suggesting greater differences in species composition with larger distances.
Key words:  NDVI    temperature    precipitation    correlation    scale
收稿日期:  2011-04-13      修回日期:  2011-07-01           出版日期:  2011-12-07      发布日期:  2011-09-06      期的出版日期:  2011-12-07
基金资助: 

The National Basic Research Program of China (2010CB950602).

通讯作者:  LiPing LI    E-mail:  liliping@pku.edu.cn
引用本文:    
LiPing LI, XiangPing WANG, Stefan ZERBE, LiYun ZHANG, JingYun FANG. Altitudinal patterns of stand structure and herb layer diversity of Picea schrenkiana forests in the central Tianshan Mountains, Northwest China[J]. 干旱区科学, 2011, 3(4): 254-260.
LiPing LI, XiangPing WANG, Stefan ZERBE, LiYun ZHANG, JingYun FANG. Altitudinal patterns of stand structure and herb layer diversity of Picea schrenkiana forests in the central Tianshan Mountains, Northwest China. Journal of Arid Land, 2011, 3(4): 254-260.
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http://jal.xjegi.com/CN/10.3724/SP.J.1227.2011.00254  或          http://jal.xjegi.com/CN/Y2011/V3/I4/254
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