草业学报2018，Vol.27Issue(5)：219-227,9.DOI:10.11686/cyxb2017233
草原灌丛化入侵:过程、机制和效应
Woody-plant encroachment in grasslands: a review of mechanisms and aftereffects
摘要
Abstract
Woody-plant encroachment in grasslands has been a much-studied topic in ecology and animal husbandry over the past few decades.This paper clarifes the causes and consequences of this encroachment by reviewing recent progress in the study of invasion stages,invasion mechanisms,the impacts of this encroachment on grassland ecosystems and their aftereffects.The means of woody-plant encroachment include both anthropophyte and natural invasion.In general,this encroachment divides into three stages:dispersal,colonizing and establishing and diffusing.The causes of encroachment have been identified as fire suppression,climate change,changes in nutrient availability and over grazing.These factors effect encroachment through changing plant coverage,soil water use efficiency and allelopathy.We conclude that woody-plant encroachment changes many interfaces in grassland ecosystems and influences the ecological and hydrological processes that lead to grassland degradation and desertification.关键词
草原灌丛化/入侵机制/气候变化/放牧/火烧Key words
woody-plant encroachment/invasion mechanism/climate change/grazing/fire引用本文复制引用
王迎新,陈先江,娄珊宁,胡安,任劲飞,胡俊奇,张静,侯扶江..草原灌丛化入侵:过程、机制和效应[J].草业学报,2018,27(5):219-227,9.基金项目
我国温带草原重点牧区草地资源退化状况与成因调查(2012FY111900),国家自然科学基金(31672472)和长江学者和创新团队发展计划项目(IRT_17R50)资助. （2012FY111900）
