African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12487

Full Length Research Paper

Distribution of biomass and diversity of Stipa bungeana community to climatic factors in the Loess Plateau of northwestern China

Cheng Jie1, Hu Tian-Ming1, Cheng Ji-Min1,2* and Wu Gao-Lin1,2*
1College of Animal Science and Technology of Northwest A and F University, Yangling, Shaanxi 712100, P. R. China. 2State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau of Institute of Soil and Water Conservation of Chinese Academy of Sciences (CAS) and Ministry of Water Resource (MWR), Yangling, Shaanxi 712100, P.R. China.
Email: [email protected], [email protected]

  •  Accepted: 03 September 2010
  •  Published: 04 October 2010

Abstract

Based on 28 year field data of Stipa bungeana community in arid, semi-arid, semi-humid areas of the Loess Plateau of Northwestern China, we studied species diversity and above ground biomass of S. bungeana community, analyzed the responses of above ground biomass to climate in different areas, and built a model of relationship between biomass and climatic factors. Results showed that there were significant differences for species diversity and above ground biomass among different sampling area. The species diversity range of S. bungeana was from 8.5 - 30.8 (ind/m2), and above ground biomass range was from 407.3 - 817.3 (g/m2) among studied area. The optimal distribution altitude range for S. bungeana is 1400 - 2000 m in arid area, 1200 - 1900 m in semi-arid area, and 600 - 1600 m in semi-humid area. Results also showed that the growth of S. bungeana was affected by different climatic factors, with rainfall as the major factor. Meanwhile, there was a close relationship between monthly biomass and rainfall during the growth stage. The models of monthly biomass and climate were built to compare the results and reveal the relationship between climatic factors and the growth of S. bungeanacommunity.

 

Key words: Stipa bungeana community, biomass model, species diversity, climatic factor, Loess Plateau.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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