福建农业科技2026，Vol.57Issue(1)：27-33,7.DOI:10.13651/j.cnki.fjnykj.2026.01.005
浙南山区农田生态系统入侵杂草种类组成及海拔分布特征分析
Analysis of Invasive Weed Species Composition and Altitudinal Distribution Characteristics in Farmland Ecosystems in the Mountainous Areas of Southern Zhejiang
摘要
Abstract
Based on the field investigation of farmland ecosystem in Songyang County,Zhejiang Province,the species composition,altitude distribution pattern and habitat preference of invasive weeds were studied.The results showed that a total of 10 species of invasive weeds were recorded,belonging to 7 families,with Compositae plants being the most represented family(4 species),accounting for 40.0%of the total species.The invasion intensity(average coverage)exhibited a declining trend with the increase of altitude.The average coverage in the low-altitude group(＜150 m)was 64.5%±22.0%(n=9),which was higher than that in the mid-altitude group(150-250 m,48.0%±15.2%,n=8)and that in the high-altitude group(＞250 m,34.7%±9.0%,n=3),with the Kruskal-Wallis test showing the marginal significance(H=5.95,P=0.051).The Chi-square test showed that the distribution of species was significantly correlated with altitude(χ2=34.49,P=0.011).Ageratum conyzoides was exclusively distributed in the high-altitude areas,while Pontederia crassipes Mart.was concentrated in the mid-altitude areas.The results provided a reference for monitoring,early warning and classified prevention and control of invasive weeds in the mountainous regions of southern Zhejiang.关键词
山区/农田生态系统/入侵杂草/分布格局Key words
Mountainous areas/Farmland ecosystem/Invasive weeds/Distribution pattern分类
农业科技引用本文复制引用
俞乐安,叶益兰,叶琼花,何火娣..浙南山区农田生态系统入侵杂草种类组成及海拔分布特征分析[J].福建农业科技,2026,57(1):27-33,7.基金项目
松阳县基层农技推广体系改革与建设项目(松农发[2022]102号). （松农发[2022]102号）
