臨滄市咖啡園雜草多樣性與生態(tài)位分析

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中圖分類號： 0948.15?7 文獻標志碼：A 文章編號：1003-935X（2025）02-0012-13

Diversity and Niche Analysis of Weeds in Coffee Garden of Lincang

CAO Zhenliang，CHENG Wenlei，TENG Penghui，JIA Boxuan，WU Tian，NIU Lisha， YINGenshen，ZHONG Yu，XIA Tiyuan （School of Agriculture and Life Sciences，Kunming University，Kunming 65O214，China）

Abstract：Inorder toclarifythecharacteristicsoftheweedcommunitystructureinLincang cofeegardensand their relationship with environmental factors，thisstudyconducteda fixed-point investigationof weedspeciesand their communitycomposition indiferentcoffeeplantations inLincang in2O23.Byusing ecologicalnicheanalysis，thetypes， communitycomposition，andlifeforms，invasivenature，anddiversityof weeds inthemainproductionareasofdiferent coffeeplantationsinthisarea wereanalyzed.Theresultsshowed thattherewere75speciesofweedsin32families，64 genera，of which18 weredominantinCompositaceaeand13 weredominantin gramineae.TheErigeroncanadensis relative frequency was the highest.The weed community was divided into two groups.Chromolaena odorata，Cynodondactylon，

Bidens pilosa，Ageratum conyzoides，Erigeron canadensisandLeucaena leucocephala．All of them had strong adaptabilityand fertity，and mostof them have stolonsorrhizomes.Thesecond group included Arthraxonhispidus， Eleusineindica，Erigeron sumatrensis，Crassocephalumrubens，etc..These weeds hada wide living spaceand grow fast. Weed population structure was afected byannual mean precipitation，annual mean temperature，longitude，latitude and altitude.Thelargest niche width wasO.4012forChromolaenaodorata，follwed byO.3767for Bidens pilosa.Studies hadshown thattheformationofweedcommunitiesinLincangcoffeeplantations istheresultof thesynergistic ffctsof speciesecologicaladaptability，reproductivestrategiesand environmental factors.Dominantweedsachievedspatial resource monopolythroughthe expansionof ecological niche width.It was suggested thatbasedonthelawof ecological nichediferentiation，acomprehensiveweed managementsystem withecological nicheregulationas thecorebe constructed to provide a theoretical basis for the sustainable development of the coffee garden ecosystem.

Key words：coffee garden;weed community;diversity analysis;influence factor;Lincang

咖啡作為省省級最具鮮明特色的優(yōu)勢農產品之一，承載著豐富的地域文化史。（剩余14622字）