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生态学杂志 ›› 2012, Vol. 31 ›› Issue (06): 1353-1360.

• 研究报告 • 上一篇    下一篇

干旱区胡杨叶片含水量和叶绿素含量特征

牛婷1,2,艾里西尔·库尔班1,2**,玉米提·哈力克3,Philipp Gartner4,Birgit Kleinschmit4,阿布都米吉提·阿布利克木1,2,   

  1. 1中国科学院疆生态与地理研究所, 乌鲁木齐 830011; 2中国科学院研究生院, 北京 100049; 3新疆大学资源与环境科学学院/新疆绿洲生态重点实验室, 乌鲁木齐 830046; 4德国柏林理工大学景观建筑与环境规划研究所, 德国柏林 10623;  5华中科技大学环境科学与工程学院, 武汉 430000)
  • 出版日期:2012-06-09 发布日期:2012-06-09

Characteristics of Populus euphratica leaf water and chlorophyll contents in an arid area of Xinjiang, Northwest China.

NIU Ting1,2, Alishir Kurban1,2**, Umut Halik3, Philipp Gartner4, Birgit Kleinschmit4, Abdimijit Ablekim1, Suriyegul Hemidul5, LIU Gui-lin1,2   

  1. (1Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; 2Graduate University of Chinese Academy of Sciences, Beijing 100049, China; 3 College of Resources & Environmental Science/Key Laboratory of Oasis Ecology, Xinjiang University, Urumqi 830046, China; 4Department of Geoinformation in Environmental Planning, Institute for Landscape Architecture and Environmental Planning, Technical University of Berlin, Berlin 10623, Germany; 5School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430000, China)
  • Online:2012-06-09 Published:2012-06-09

摘要: 在阿拉干样区内,距河道不同距离选取40棵胡杨树(Populus euphratica)采样,使用相关分析方法探讨胡杨叶片相对含水量(fuel moisture content,FMC)、等效水厚度(equivalent water thickness,EWT)、叶绿素含量随距河道距离的空间差异,以及随地面温度的变化特征,并讨论了FMC、EWT和叶绿素含量之间的相关性。结果表明: FMC、EWT、叶绿素含量与河道距离有极显著的相关关系(P <0.01)。距河道越远,3项指标均随距河道距离的增加极显著的减少,其中EWT与距河道距离的相关性最大(-0.577)。温度变化对FMC和EWT均有极显著的影响(P <0.01),但对叶绿素含量影响不大(P >0.05)。因FMC、EWT的物理含义不同,它们的平均值在胡杨树个体尺度/水平上极显著相关,但在单片叶子尺度上FMC和EWT之间无显著相关(P>0.05),而胡杨树个体平均和单片叶子的EWT与叶绿素含量均极显著相关(P<0.01)。由于EWT与距河道距离和叶绿素含量的相关性极显著,而且对温度变化不敏感,因此,具有很好的开发应用潜力,建议将EWT作为干旱区河岸生态系统植被含水量遥感监测的一个指标。

关键词: 公园绿地, 可达性, 网络分析法, 多交通方式, 沈阳市铁西区

Abstract: In August 2011, forty Populus euphratica plants at the Arghan monitoring section in the lower reaches of Tarim River were selected to study the spatial differentia of their leaf physiological traits and surface temperature. The plants had different distances from the River. A significant (P<0.01) negative correlations were observed between the leaf fuel moisture content (FMC), equivalent water thickness (EWT), and chlorophyll content and the distance of the plants from the River. All the former three variables decreased significantly with the distance from the River. Leaf surface temperature had significant effects on the leaf FMC and EWT (P<0.01), but minor effects on the chlorophyll content (P>0.05). Due to the differences in the physical interpretation of FMC and EWT, their mean values were significantly correlated at tree level (P<0.01), but less correlated at single leaf level. However, the correlation between EWT and chlorophyll content were significant (P<0.01) both at tree level and at single leaf level. Because of the significant correlation with chlorophyll content and with the distances of trees from river, leaf EWT could be used as a vegetation water index for remote sensing-based monitoring in arid area riparian ecosystems.

Key words: park green space, landscape accessibility, network analysis method, multiple modes of transportation, Tiexi District, Shenyang City.