Landscape pattern and eco-hydrological characteristics at the upstream of Minjiang River,China

作     者：LI Chongwei GE Jianping LIU Shirong SUN Pengsen 

作者机构：College of Life SciencesBejing Normal UniversityBeijing 100875China Institute of Forest EcologyEnvironment and ProtectionChinese Academy of ForestryBeijing 100091China College of Urban and Environment SciencesTianjin Normal UniversityTianjin 300384China 

出 版 物：《Frontiers in Biology》 (生物学前沿（英文版）)

年 卷 期：2006年第1卷第4期

页      面：455-462页

核心收录：

学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 1001[医学-基础医学(可授医学、理学学位)] 08[工学] 0815[工学-水利工程] 0836[工学-生物工程] 0713[理学-生态学] 

基　　金：This paper was supported by the National Key Projects for Basic Research of China(No.2002CB111504) the Outstanding Young Scientist Program of National Natural Science Foundation of China(No.30125036) the National Natural Science Foundation of China(No.30471383) 

主　　题：precipitation runoff landscape pattern eco-hydrological index 

摘      要：Based on three scenes of Landsat 5 Thematic Mapper(TM)satellite images acquired on June 26,1994,12 land cover types were identified by the supervised classification *** precipitation,runoff,and normalized difference vegetation index(NDVI)data of six catchments were accumulated from April to September in 1992,1993,and 1995.A new eco-hydrological index,expressed by the difference between precipitation and runoff divided by the product of precipitation and NDVI,was used in this study to represent the eco-hydrological functions of different *** results were:(1)The selected six catchments at the upstream of Minjiang River,China were different in landscape patterns in terms of landscape type and *** were higher contagion,lower edge density and diversity index in the Shouxi catchments and lower contagion,higher edge density and diversity index in the Zagunao catchments.(2)Eco-hydrological indexes had remarkable differences among different *** highest eco-hydrological index was found in the Shouxi catchments,which indicated higher precipitation holding capacity of vegetation *** the lower eco-hydrological index was found in the Zagunao catchments,which indicated its lower precipitation holding capacity of vegetation.(3)High correlation was detected between the landscape indexes and eco-hydrological ***-hydrological index was positively correlated with landscape contagion in contrast with the negative correlation with landscape diversity and edge density.