Research progress and trend on grassland agroecology

Abstract

Abstract: The connotation, progress, research frontiers and developmental trend of grassland agroecology are discussed in this paper.The interface theory, structure and function, coupling and discordance, and health assessment of grassland agroecosystems were recognized as the four research frontiers of the discipline. There exist three primary interfaces in a grassland agroecosystem, i.e.,vegetation site, grassland animal and production management. Research into a series of the ecological processes that occured at these interfaces is the key to revealing the features of the system behavior. There are four sections in a grassland agroecosystem, i.e.,pre-plant, plant, animal and post biotic sections. System coupling and discordance are the two important concepts to describe interactions among the production sections. System coupling among the sections can lead to system improvement by exerting the potential of system capacity. Health of an ecosystem is a reflection of its structure and function, and health assessment is a measurement of its orderliness and service value.

Key words: Grassland agroecosystem, Interface, System coupling, System discordance, Health assessment

CLC Number:

S812

REN Jizhou, LI Xianglin, HOU Fujiang . Research progress and trend on grassland agroecology[J]. Chinese Journal of Applied Ecology, 2002, (8): 1017-1021.

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