中国地理科学(英文版) ›› 2012, Vol. 22 ›› Issue (3): 288-301.

• 论文 • 上一篇    下一篇

Vegetation-environment Relationships Between Northern Slope of Karlik Mountain and Naomaohu Basin, East Tianshan Mountains

ZHANG Haiyan1, QIAN Yibing1, WU Zhaoning2, WANG Zhongchen3   

  1. (1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; 2. College of Geology and Exploration Engineering, Xinjiang University, Urumqi 830046, China; 3. Environmental Development Center of Ministry of Environmental Protection, Beijing 100029, China)
  • 出版日期:2012-04-30 发布日期:2012-05-24

Vegetation-environment Relationships Between Northern Slope of Karlik Mountain and Naomaohu Basin, East Tianshan Mountains

ZHANG Haiyan1, QIAN Yibing1, WU Zhaoning2, WANG Zhongchen3   

  1. (1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; 2. College of Geology and Exploration Engineering, Xinjiang University, Urumqi 830046, China; 3. Environmental Development Center of Ministry of Environmental Protection, Beijing 100029, China)
  • Online:2012-04-30 Published:2012-05-24

摘要:

 Based on data from 22 sample plots and applying the Canonical Correspondence Analysis (CCA), this paper discusses the

vegetation-environment relationships between the northern slope of Karlik Mountain and Naomaohu Basin, which is situated in the

easternmost end of the Tianshan Mountains, Xinjiang Uygur Autonomous Region, China. For the zonal vegetation, community diversity of

mountain vegetation is higher than that of the desert vegetation due to environmental factors. The CCA ordination diagram revealed that

the composition and distribution of vegetation types are mainly determined by altitude, soil pH and soil salt content. With increasing

elevation, the soil pH and total salt content decrease but the contents of soil organic matter, soil water, total nitrogen and total

phosphorus increase gradually. In the CCA ordination diagrams, the sample plots and main species can be divided into five types

according to their adaptations to the environmental factors. Type I is composed of desert vegetation distributed on the low mountains,

hills, plains and deserts below an elevation of 1900 m; type II is distributed in the mountain and desert ecotone with an elevation of 1900

–2300 m, and includes steppe desert, desert steppe and wetland meadow; type III is very simply composed of only salinized meadow;

type IV is distributed above an elevation of 2300 m, containing mountain steppe, meadow steppe, subalpine meadow and alpine meadow;

type V only contains salinized meadow. The results show that with increasing elevation, species combination changes from the xerophytic

shrubs, semi-shrubs and herbs distributed in the low altitude zone with arid climate to the cold-tolerant perennial herbs growing in the

high altitudinal zone with cold climate.

关键词: vegetation pattern, environmental factors, canonical correspondence analysis (CCA), vegetation-envi-
ronment relationships,
Tianshan Mountains, Xinjiang

Abstract:

 Based on data from 22 sample plots and applying the Canonical Correspondence Analysis (CCA), this paper discusses the

vegetation-environment relationships between the northern slope of Karlik Mountain and Naomaohu Basin, which is situated in the

easternmost end of the Tianshan Mountains, Xinjiang Uygur Autonomous Region, China. For the zonal vegetation, community diversity of

mountain vegetation is higher than that of the desert vegetation due to environmental factors. The CCA ordination diagram revealed that

the composition and distribution of vegetation types are mainly determined by altitude, soil pH and soil salt content. With increasing

elevation, the soil pH and total salt content decrease but the contents of soil organic matter, soil water, total nitrogen and total

phosphorus increase gradually. In the CCA ordination diagrams, the sample plots and main species can be divided into five types

according to their adaptations to the environmental factors. Type I is composed of desert vegetation distributed on the low mountains,

hills, plains and deserts below an elevation of 1900 m; type II is distributed in the mountain and desert ecotone with an elevation of 1900

–2300 m, and includes steppe desert, desert steppe and wetland meadow; type III is very simply composed of only salinized meadow;

type IV is distributed above an elevation of 2300 m, containing mountain steppe, meadow steppe, subalpine meadow and alpine meadow;

type V only contains salinized meadow. The results show that with increasing elevation, species combination changes from the xerophytic

shrubs, semi-shrubs and herbs distributed in the low altitude zone with arid climate to the cold-tolerant perennial herbs growing in the

high altitudinal zone with cold climate.

Key words: vegetation pattern, environmental factors, canonical correspondence analysis (CCA), vegetation-envi-
ronment relationships,
Tianshan Mountains, Xinjiang