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Acta Prataculturae Sinica ›› 2014, Vol. 23 ›› Issue (4): 253-261.DOI: 10.11686/cyxb20140431

• Orginal Article • Previous Articles     Next Articles

Natural vegetation restoration and change of soil enzyme activity on secondary grassland of abandoned land area in the downstream of Shiyang River

WANG Li-de1,2,3,YAO Tuo1,4,HE Fang-lan2,3,HAN Fu-gui2,3,GUO Chun-xiu2,3,WANG Fang-ling2,3,WEI Lin-yuan2,3   

  1. 1.Pratacultural College of Gansu Agricultural University,Lanzhou 730070,China;
    2.Minqin National Station for Desert Steppe Ecosystem Studies,Mingqin 733300,China;
    3.State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating,Wuwei 733000,China;
    4.Key Laboratory of Grassland Ecosystem,Ministry of Education,Lanzhou 730070,China
  • Received:2013-12-12 Online:2014-08-20 Published:2014-08-20

Abstract: Community characteristics and soil catalase,sucrase,urease and phosphatase activity and distribution in the natural recovery process of vegetation on secondary grassland of abandoned land area of different eras (1,2,3,4,5,8,15,24,31 a) in the downstream of Shiyang river were investigated and analyzed by the method use space instead of time. The results indicate that 34 species of plant can be found in the 9 investigation samples during 31 a succession after abandoned. The vegetation communities of annual herbaceous as constructive species and Perennial herbaceous with individual bush plants as associated species gradually succession to single shrub community. Strong continuity and graduality showed in the process of succession. Besides,most of the soil enzyme from different depth (0-10 cm,10-20 cm,20-30 cm,30-40 cm) of abandoned lands of different eras show significant differences (P<0.01) on the activity. The soil enzyme activity decreased with the increase of soil depth,and that of surface occupies a large proportion in the total enzyme activity of the 4 layer. With the time of succession increased,the general trend of soil enzyme activity declined in a fluctuant way same as that of species richness and diversity index. Soil enzyme activity and vegetation restoration is an interactive process with a feedback between them. Furthermore,the change of soil enzyme activity is slow,and has correlation with crops grew the last year.

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