|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Vegetation composition differentiation and species-environment relationships in the northern part of Isfahan Province, Iran显示文摘A considerable proportion of Iran's territory is covered with arid and semi-arid rangelands and mismanagement and overexploitation of those rangelands have resulted in serious ecological degradation. Thus, the need is pressing to examine the present species composition and the relationships with environmental factors for providing the needed scientific references to species conservation and ecological rehabilitation efforts. The aims of this study were to examine the species composition and to delineate the most important factors influencing the distributions of plant species and groups in the northern rangelands of Isfahan Province(Iran) using two-way indicator species analysis(TWINSPAN), detrended correspondence analysis(DCA), principal component analysis(PCA), and canonical correspondence analysis(CCA). Field investigations were conducted in the growing season of 2014 using stratified random method in 22 homogeneous sampling units. In total, 75 plant species belonging to 52 genera and 19 families were identified. The most important families were Asteraceae and Papilionaceae, the most important genera were Astragalus, Cousinia, and Acanthophyllum, and the most important species were Artemisia aucheri and Artemisia sieberi. Plant species were classified into 10 groups using TWINSPAN. DCA was used to estimate the magnitude of changes in species composition along the first two ordination axes to provide gradient length estimations for PCA and CCA ordinations. The first three PCA axes and the first three CCA axes demonstrated similar cumulative percentage of variance, indicating that the environmental factors(selected by PCA) used in CCA ordination were acceptable for explaining the species composition and the distributions. CCA ordination showed that the first axis was closely related to elevation, slope, surface bare soil cover, surface litter cover, gravel proportion, organic matter, total nitrogen, Ca CO3 content, and grazing intensity and that the second axis was closely related to sand proportion, silt proportion, clay proportion, and saturation percentage. Among these factors, elevation was the most effective factor to separate the plant groups and grazing was the major cause of rangeland degradation. | Hadi KARGAR-CHIGANI Seyed Akbar JAVADI Ghavamodin ZAHEDI-AMIRI Seyed Jamaleddin KHAJEDDIN Mohamad JAFARI | 2017 | Journal of Arid Land2017，9，2： | 7 |
| 2 | Removal of lead from aqueous solutions by precipitation with sodium di-( n -octyl) phosphinate显示文摘 | Jamaleddin O. Esalah Martin E. Weber Juan H. Vera | 1999 | Separation and Purification Technology1999，，1： | 1 |
| 3 | Simulation of ice-shedding on electrical transmission lines using ADINA显示文摘 | JAMALEDDINE A MCCLURE G ROUSSELET J | 1993 | Computers and Structures1993，47，45： | 1 |
| 4 | Simulation of ice-shedding on electrical transmission lines using ADINA 显示文摘 | Jamaleddine A McGlure G | 2003 | Computers and Strucures2003，47，： | 1 |
| 5 | Simulation of ice-shedding on electrical transmission lines using ADINA显示文摘 | Jamaleddine A McClure G Rousselet J | 1993 | Computers and Structures1993，47，45： | 1 |
| 6 | Simulation of Ice-shedding on electrical transmission lines using ADINA显示文摘 | JAMALEDDINE A MCCLURE G ROUSSELET J | 1993 | Computers and Structures1993，47，45： | 1 |
| 7 | Effect of continuous positive airway pressure on the rapid shallow breathing index in patients following cardiac surgery 显示文摘 | El-Khatib MF Jamaleddine GW Khoury AR | 2002 | Chest2002，121，2： | 1 |
| 8 | Simulation of ice-shedding on electrical transmission lines using ADINA 显示文摘 | Jamaleddine A McClure G Rousselet J Beauchemin R | 1993 | Computers and Structures1993，47，45： | 1 |
| 9 | Simulation of Ice Shedding on Electrical Transmission Lines U- sing ADINA显示文摘 | JAMALEDDINE A MCCLUREG ROUSSELET J | 1993 | Computers & Structures1993，47，45： | 1 |
| 10 | Simulation of ice- shedding on electrical transmission lines using ADINA 显示文摘 | Jamaleddine A McClure G Rousselet J | 1993 | Computers and Structures1993，47，45： | 1 |
| 11 | Simulation of ice-shedding on electrical transmission lines using ADINA显示文摘 | Jamaleddine A Moclure G Rousselet J | | 0，，： | 1 |
| 12 | Simula- tion of Ice - shedding on Electrical Transmission Lines U- sing ADINA显示文摘 | Jamaleddine A McClure G Rousselet J | 1993 | Computers and Structures1993，47，45： | 1 |
| 13 | A non-linear finite-element model to calculate the twist moment of a four-conductorbundle显示文摘 | JAMALEDDINE A CLOUTIER L | 1988 | Electric Power Systems Research1988，14，3： | 1 |
| 14 | Endobronchial stenting for respiratory complications in relapsing polychondritis 显示文摘 | ABBAS O FARES M JAMALEDDINE G | 2007 | Clin Rheumatol2007，26，2： | 1 |
| 15 | Steroid use in acute lung injury/acute respiratory distress syndrome:What about the acute lung injury from H1N1?显示文摘 | Jamaleddine G Kramer M Zein J | 2009 | Crit Care Med2009，37，11： | 1 |
| 16 | A non-linear finite-element model to calculate the twist moment of a four-conductor bundle显示文摘 | Ahmad Jamaleddine Louis Cloutier | | 0，，03： | 1 |
| 17 | Simulation of ice-shedding on electrical transmission lines using ADINA 显示文摘 | Jamaleddine A McClure G Rousselet J | 1993 | Computers and Structures1993，47，45： | 1 |
| 18 | Sim- ulation of ice-shedding on electrical transmission lines using ADINA显示文摘 | Jamaleddine A McClure G Rousselet J | 1993 | Computers and Structures1993，47，： | 1 |
| 19 | Simulation of ice-shedding on electrical transmission lines using ADINA 显示文摘 | Jamaleddine A McClure G Rousselet J | 1993 | Computer and Structures1993，47，45： | 1 |
| 20 | Handwashing and use of gloves while magaging patients receiving mechanical ventilation in the ICU显示文摘 | Khatib M Jamaleddine G Abdallah A | 1999 | Chest1999，116，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员