【摘要】 按照工业用地、农业用地、交通用地、居住用地、绿地和荒地等6类不同用地类型,于上海青浦区选取河流滨岸带样点48个,研究不同用地类型对滨岸带生境及植物群落组成的影响。研究发现:(1)目前该地区河流滨岸带生境优劣程度为:荒地>绿地>农业用地>交通用地>居住区>工业用地。这主要是由于在不同用地类型下人们对河岸类型、滨岸带几何形态以及原有植被的影响所造成。(2)目前该地区河流滨岸带有植物51科118种,平均丰富度水平绿地最高,工业用地最低。从植物的生活型与来源方面看,6类用地类型下的河流滨岸带植物群落组成存在显著差异。工业用地受人为影响强度较大,外来入侵植物比例高达27.22%;农业用地草本平均数量11.75种,为6类用地类型中最高水平;交通用地与居住用地表现出较大人工引种植物比例,分别为37.77%和49.97%;绿地有相对均衡的乔灌草比例,人工引种植物占所有植物的64.05%;荒地缺乏乔木与灌木类型,自然分布植物比例最高,为69.94%。更多还原

【Abstract】 In this research,a case study in Qingpu District of Shanghai was conducted to determine the impacts of land use changing on riparian habitat and plant community composition.A total of 48 riparian sites in six different land use types were investigated and analyzed.At present,the quality of riparian habitat in Qingpu could be ranked in the order of:wild land>green space>agricultural land>transportation land>residential land>industrial land.The main reason of this result was the changes of bank type,the width and gradient of the riparian zone,and the original vegetation as the land use type varying.A total of 118 plants from 51 families were found in Qingpu riparian zone.The highest value of average richness appeared in green space,while the lowest in industrial land.Plant community compositions in six land use types were significantly different from each other in respect of life form and origin.Industrial land suffered intensive disturbance and the percentage of the alien invasive plants was as high as 27.22%.The average richness of grass species in agricultural land was 11.75,which was the highest value in six land use type.The percentage of artificial plants in transportation and residential land were as high as 37.77% and 49.97%,respectively.In green space,the life form was in a relatively balanced state,and the percentage of artificial plants was 64.05%.Wild land lacked trees and bushes,and the percentage of the natural distributing plants was as high as 69.94%.This article enriched the researches on the impacts of land use changing on riparian habitat and plant community composition in plain river network area,and could be helpful to the restoration and management work of riparian zone in future.更多还原