生态环境学报Issue(3)：392-397,6.
不同退化梯度上典型草原植物群落养分的对应分析
Correspondence analysis of phytocoenosium nutrient content of typical grassland on the different degradation gradient
摘要
Abstract
In the paper, the typical grassland is the object study. The congruent relationship between the degree of grassland degeneration and phytocoenosium 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 CK, light degeneration, moderate degeneration and high degeneration. Exploring the relation between phytocoenosium nutrient content and the degree of grassland degeneration by the method of correspondence analysis can reflect the difference degree between grassland degeneration gradient and correlation degree between phytocoenosium nutrient indexes. With the degree of degeneration aggravated, total digestible nutrients of grassland phytocoenosium increase, whereas dry matter content reduce. The dry matter(DM) content is highest in the condition of CK. The content of ether extract (EE) of light degeneration (LD) is higher. The content of nitrogen-free-extract (NFE) of moderate degeneration (MD) is higher. The content of crude protein (CP) and total digestible nutrients (TDN) of high degeneration (HD) is higher. The content of crude fiber (CF)is relatively stable, which has little to do with grassland degeneration degree. The different gradients on the typical grassland have degradation effects on plant communities of different nutrient contents. Under the same conditions, moderate degradation (MD) and high degradation (HD) have effects on the nutrient content of large grassland plant communities. Mild degradation (LD) has little effect.关键词
退化梯度/典型草原/植物群落/养分含量/对应分析Key words
degeneration gradient/typical grassland/phytocoenosium/nutrient content/correspondence analysis分类
农业科技引用本文复制引用
刘兴波,格根图,孙林,吕世杰,刘红梅,刘鹰昊,贾玉山..不同退化梯度上典型草原植物群落养分的对应分析[J].生态环境学报,2014,(3):392-397,6.基金项目
国家现代牧草产业技术体系(CARS-35) （CARS-35）
