退化草地群落演替趋向研究进展  

A Review on the Succession Tendency of Population of Degenerated Grassland

作　　者：李志丹[1] 干友民[1] 泽柏[2] 霍尚峰[1] 

机构地区：[1]四川农业大学草业科学系,四川雅安625014 [2]四川省草原研究所,成都犀浦611731

出　　处：《四川草原》2004年第5期5-7,共3页Journal of Sichuan Grassland

摘　　要：草地群落的退化演替以植物个体、种群与群落层次上植物的动态以及土壤理化性状的改变等现象为表征。主要从植物个体形态特征、草地退化模式、草地土壤养分变化等方面对退化的响应,探讨了草地退化演替的特征和趋势,建议今后对草地的退化演替机理、放牧生态学、恢复生态学、界面生态学及草地的价值评估等方面进行更深入的研究。The degeneration of grassland community is characterized by the trends of plant individual, the population,the community and the variations of physical and chemical features of soil.The characteristics and trends of the degeneration grassland are discussed according to the response of the several main factors to the grassland degeneration.The factors include the features of plant individual form,the patterns of the de- generation nd the variations of soil nutrition.It suggests that the further research must be done in some as- pects such as the mechanism of degeneration and succession of grassland,grazing ecology,restoration ecology, interface ecology,grassland value evaluation.

关 键 词：草地 群落 退化 演替 土壤 生态学 

分 类 号：S812.3[农业科学—草业科学]