畜牧兽医学报 ›› 2014, Vol. 45 ›› Issue (9): 1467-1473.doi: 10.11843/j.issn.0366-6964.2014.09.012

• 动物营养 • 上一篇    下一篇

不同退化梯度上草甸草原植物群落养分的对应分析

刘兴波1,格根图1,孙林1,吕世杰1,刘红梅2,贾玉山1*   

  1. (1.内蒙古农业大学生态环境学院,呼和浩特 010018;2.内蒙古林业科学研究院 ,呼和浩特 010010)
  • 收稿日期:2014-01-09 出版日期:2014-09-23 发布日期:2014-09-23
  • 通讯作者: 贾玉山,教授,博士生导师,主要从事饲草料加工与贮藏研究,E-mail:jys_nm@sina.com
  • 作者简介:刘兴波(1980-),男,博士,通辽奈曼旗人,主要从事饲草料加工方面的研究,E-mail:liuxingbo925@126.com
  • 基金资助:

    国家现代牧草产业技术体系(CARS-35)

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

摘要:

研究草地退化程度与草地植物群落养分之间的对应关系,从营养学的角度,探索如何科学合理地利用草原。根据草原调查“四度一量”方法,将草地退化程度分为对照、轻度退化、中度退化和重度退化,采用对应分析方法阐释植物群落养分含量与草地退化程度之间的关系,在公因子分析基础上,能够反映草地退化梯度之间的差异程度和植物群落养分指标之间的相关程度。随着退化程度的加剧,草地植物群落总可消化养分(TDN)增加,但干物质(DM)含量在减少。对照条件下干物质(DM)含量最高,中度退化草地无氮浸出物(NFE)含量较高,重度退化草地粗蛋白(CP)养分含量最高;粗脂肪含量(EE)比较稳定,与草地退化程度关系不大。草地退化程度对植物群落养分中干物质(DM)含量、无氮浸出物(NFE)、粗蛋白(CP)、粗纤维(CF)、总可消化养分(TDN)影响较大,对草地粗脂肪(EE)含量影响不大。

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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