Harm Situation and Risk Assessment of Pueraria montana in the"Four Mountains"Forest Ecosystem in the Central Urban Area of Chongqing  

作　　者：Guohao ZHANG Yan TIAN Zhengchun WANG Zhihong LIU Yong PU Guifang CHEN 

机构地区：[1]Chongqing Key Laboratory of the Three Gorges Area Forest Ecology Protection and Restoration,Chongqing Academy of Forestry,Chongqing 400036,China [2]Chongqing Mountain Type Urban Forest Ecosystem National Positioning Observatory and Research Station,Chongqing 400036,China

出　　处：《Agricultural Biotechnology》2025年第1期69-72,共4页农业生物技术(英文版)

基　　金：Supported by Special Project of Performance Incentive and Guidance for Scientific Research Institutions in Chongqing(cstc2022jxjl80025).

摘　　要：Pueraria montana is a perennial twining vine species of Pueraria in Leguminosae.Because of its fast growth and strong climbing and covering ability,this species has the potential threat of invading forest ecosystem.Based on the investigation of the occurrence and harm of P.montana in the"four mountains"forest ecosystem in the central urban area of Chongqing,combined with its growth habits and biological characteristics,we comprehensively evaluated its harm risk.The results show that P.montana is widely distributed in the forest ecosystem within the"four mountains"in the central urban area of Chongqing.On average,there was a distribution site of P.montana every 1.38 km of forest road with a scale of 0.43 hm 2/survey point and a coverage of about 42.86%.P.montana mainly occupy forest land by covering and climbing,threatening the original vegetation of forest land.It grows rapidly,and its ability of diffusion and colonization is very strong.The average length of new branches was 11.52 m/year,and the number of effective tillers was 5.25.According to National Forestry Pest Risk Analysis Index System,the risk assessment value of P.montana was 2.51,so it is a medium-risk harmful plant to forestry.It is suggested that the forestry department should strengthen the management of P.montana to prevent its further spread.

关 键 词：Pueraria montana Forest ecosystem Harm situation Risk assessment 

分 类 号：S632.9[农业科学—蔬菜学]