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FOREST RESOURCES WANAGEMENT ›› 2017›› Issue (6): 27-33.doi: 10.13466/j.cnki.lyzygl.2017.06.005

• Integrated Management and Administration • Previous Articles     Next Articles

Nutritional Quality Diagnosis and Management Strategy of Plant Community at Different Succession Stages in Northwest Guizhou

QIN Shiyi1(), YU Yanghua2(), XING Rongrong3, WANG Lu1   

  1. 1. School of Geography and Environmental Science,Guizhou Normal University,Guiyang 550025,China
    2. School of Karst Science/State Engineering Technoogy Institute for Karst Decertification Control,Guizhou Normal University,Guiyang 550001,China
    3. School of Resources and Environmental Engineering,Guizhou University,Guiyang 550025,China
  • Received:2017-08-10 Revised:2017-10-16 Online:2017-12-28 Published:2020-09-28
  • Contact: YU Yanghua E-mail:15885501304@163.com;yuyanghua2003@163.com

Abstract:

The sustainable degradation of plant communities accelerates the process of rocky desertification in the karst area of northwest Guizhou.So it is of great significance to evaluate the plant communities’ nutrient quality for its sustainable management at this region.In this paper,The plant communities in five successional stages were used to study the 12 kinds of nutrient indicators of soil and litter to analyze the nutrient changing laws further.Besides,the integrated fertility index of each plant community was evaluated by principal component analysis to provide scientific basis for forest restoration and protection of karst degraded ecosystem.The results showed that:1) The contents of soil organic matter,total nitrogen and available nitrogen in plant communities were followed by Rhododendron simsii-Populus alba(RP)>Betula luminifera(B)>Quercus variabilis+Corylus heterophylla(QC)>Pinus yunnanensis+Populus alba-Betula luminifera(PPB)>Populus alba+Betula luminifera(PB).With the evolving of succession in the positive direction,the other soil indexes did not show any specific characteristics,and the nutrient of litter was increasing;2) The comprehensive index of nutrient quality was RP(1.510)>B(0.938)>QC(-0.737)>PB(-0.771)>PPB(-0.940).Based on the analysis of nutrient diversity and nutrient quality of plant community,the management measures such as litter protection and plant community structure improvement could be used to improve the nutrient quality of forest ecosystem.

Key words: plant community, succession, soil, litter, nutrient quality diagnosis, management

CLC Number: