自然杂志
自然雜誌
자연잡지
CHINESE JOURNAL OF NATURE
2014年
6期
391-396
,共6页
干旱半干旱生态系统%灌丛化%灌木入侵%沃岛效应%植被类型
榦旱半榦旱生態繫統%灌叢化%灌木入侵%沃島效應%植被類型
간한반간한생태계통%관총화%관목입침%옥도효응%식피류형
arid and semiarid ecosystem%shrub encroachment%shrub invasion%fertile island effect%vegetation type
灌丛化草原指灌木植物在草原基质上形成的团块状散布的斑块植被景观，它是在干旱半干旱地区出现的一种新的植被类型。作为灌草连续体，灌丛化草原中的灌木斑块与间隙处的草本斑块共同决定着该植被类型的群落学和生态学特征。笔者评述了灌丛化草原的分布、可能的形成原因、植被结构、物种组成及碳收支等结构特征及生态功能。
灌叢化草原指灌木植物在草原基質上形成的糰塊狀散佈的斑塊植被景觀，它是在榦旱半榦旱地區齣現的一種新的植被類型。作為灌草連續體，灌叢化草原中的灌木斑塊與間隙處的草本斑塊共同決定著該植被類型的群落學和生態學特徵。筆者評述瞭灌叢化草原的分佈、可能的形成原因、植被結構、物種組成及碳收支等結構特徵及生態功能。
관총화초원지관목식물재초원기질상형성적단괴상산포적반괴식피경관，타시재간한반간한지구출현적일충신적식피류형。작위관초련속체，관총화초원중적관목반괴여간극처적초본반괴공동결정착해식피류형적군락학화생태학특정。필자평술료관총화초원적분포、가능적형성원인、식피결구、물충조성급탄수지등결구특정급생태공능。
Shrub-encroached grassland (SEG), referring to a mosaic landscape with shrub patches interspaced with grass patches, is becoming an important and new vegetation type in arid and semiarid region. As a shrub-grass-continuum, the development of shrub patch and grass patch in the SEG alters local and regional water and heat balance, and consequently determines the community structure and ecological function of the vegetation type. We reviewed the distribution, possible mechanism, vegetation characteristics, species composition, and carbon budget of SEG.
