ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2014, Vol. 45 ›› Issue (9): 1467-1473.doi: 10.11843/j.issn.0366-6964.2014.09.012

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Correspondence Analysis of Plant Community Nutrient Content of Meadow Grassland on the Different Degradation Gradient

LIU Xing-bo1,GE Gen-tu1,SUN Lin 1,LYU Shi-jie1,LIU Hong-mei2 ,JIA Yu-shan1*   

  1. (1.College of Ecology and Environmental Science,Inner Mongolia Agricultural University,Hohhot 010019,China;2.Inner Mongolia Academy of Forestry Science,Hohhot 010010,China)
  • Received:2014-01-09 Online:2014-09-23 Published:2014-09-23

Abstract:

The congruent relationship between the degree of grassland degradation and plant community nutrient was studied from the point of view of nutrition,exploring how utilize grassland scientifically and reasonably.According to the method of grassland survey- Height,coverage,abundance,Frequency,the degree of utilization was divided into control(CK),light degradation,moderate degradation and high degradation.Exploring the relation between plant community nutrient content and the degree of grassland degradation by the method of correspondence analysis could reflect the difference degree between grassland degradation gradient and correlation degree between plant community nutrient indexes.With the degree of degradation aggravated,total digestible nutrients of grassland plant community increase,whereas dry matter content reduce.The dry matter(DM) content was highest in the condition of CK.The content of ether extract (EE) of light degradation (LD) was higher.The content of nitrogen-free-extract (NFE) of moderate degradation (MD)was higher.The content of crude protein (CP) and total digestible nutrients (TDN) of high degradation (HD) was higher.The content of crude fiber (CF) was relatively stable,which had little to do with grassland degradation degree.The degree of grassland degradation had great influence on DM,EE,NFE,CP and TDN and had little influence on EE.

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