草业学报Issue(3)：155-167,13.DOI:10.11686/cyxb20150316
不同混播方式下豆禾混播草地群落稳定性的测度与比较
Determination and comparison of community stability in different legume-grass mixes
摘要
Abstract
The community stability of different legume-grass mixes has been analysed using the fuzzy synthetic evaluation method.Onobrychis viciaefolia ,Medicago sativa ,Trifolium pratense ,Dactylis glomerata ,Bro-mus inermis and Phleum pratense were used in four different combinations (3,4,5 or 6 species in each mix-ture)at three sowing ratios of legume to grass (5∶5,4∶6 and 3∶7).In order to measure community stabili-ty and susceptibility to invasion,seven indexes (including the relative densities of grasses and legumes,the yields of forage,crude protein,ether extract,neutral detergent fiber,and the relative total yield)were ana-lysed from 2008 to 2012.The component stability of legumes in mixtures with O.viciaefolia was lower than that of grass,while it was higher in mixtures that did not contain O.viciaefolia.Community stability in-creased with increases in species diversity.Stability was lower in the 4∶6 legume-grass mix than at other rati-os.Susceptibility to invasion was higher at 5∶5 than at other ratios and was minimally affected by species di-versity in the various mixes.Fuzzy synthetic evaluation showed that stability at 4∶6 was lower than at other ratios and that stability was rarely affected by species diversity.In conclusion,the study suggests that species diversity and the ratio of legumes to grass may affect some rather than all aspects of community stability.Fur-ther research is needed at appropriate time and space scales and using standardized indices to discover what oth-er factors are influencing the stability of legume-grass mixes.关键词
豆禾混播草地/混播种类/混播比例/群落稳定性/模糊综合评价Key words
legume-grass mixture/mixed species diversity/mixed ratios/community stability/fuzzy synthetic evaluation引用本文复制引用
郑伟,加娜尔古丽,唐高溶,朱进忠..不同混播方式下豆禾混播草地群落稳定性的测度与比较[J].草业学报,2015,(3):155-167,13.基金项目
农业部公益性行业科研专项（201003023），中国科学院战略性先导科技专项－应对气候变化的碳收支认证及相关问题（XDA05050405），新疆维吾尔自治区高校科研计划重点项目（XJEDU2012I19）和新疆维吾尔自治区科技支疆项目（201191224）资助。 （）
