本文選題：步甲 + 物種多樣性��； 參考：《草業(yè)學(xué)報(bào)》2017年02期

【摘要】：本研究選取寧夏銀川市賀蘭山農(nóng)牧場(chǎng)苜蓿地及苜蓿-玉米、苜蓿-小麥、苜蓿-防護(hù)林、苜蓿-休閑地4種鄰作邊緣帶,用陷阱法對(duì)步甲科昆蟲(chóng)種類(lèi)和個(gè)體數(shù)進(jìn)行了調(diào)查,研究了地表步甲昆蟲(chóng)的物種組成與數(shù)量、多樣性以及季節(jié)遷移動(dòng)態(tài)。調(diào)查共采集步甲昆蟲(chóng)9239頭,21種。其中毛青步甲(Chlaenius pallipes)、谷婪步甲(Harpaluscal ceatus)、彩角青步甲(Chlaenius touzalini)分別占總個(gè)體數(shù)的41.17%,18.77%,17.07%,為該地區(qū)的優(yōu)勢(shì)種類(lèi)。分析表明,4種鄰作型的苜蓿邊緣地步甲豐富度為防護(hù)林-苜蓿邊緣地小麥-苜蓿邊緣地=玉米-苜蓿邊緣地休閑地-苜蓿邊緣地;多樣性為小麥-苜蓿邊緣地防護(hù)林-苜蓿邊緣地玉米-苜蓿邊緣地休閑地-苜蓿邊緣地;小麥-苜蓿邊緣地的均勻度指數(shù)和優(yōu)勢(shì)度指數(shù)均為最高。苜蓿邊緣地與相鄰作物邊緣地步甲群落多樣性比較,前者的步甲多樣性指數(shù)明顯高于后者。地表步甲種群在苜蓿田邊緣帶與相鄰作物田邊緣帶之間存在著明顯的季節(jié)遷移,其遷移動(dòng)態(tài)的程度受不同鄰作作物類(lèi)型、苜蓿刈割及灌水等農(nóng)事操作的顯著影響。
[Abstract]:In this study, four kinds of alfalfa fields and alfalfa-corn, alfalfa-wheat, alfalfa-shelterbelt and alfalfa-leisure land were selected as edge zones in agricultural pasture of Helan mountain in Yinchuan city, Ningxia. The species and individual number of beetles were investigated by trap method The species composition and quantity, diversity and seasonal migration dynamics of the ground beetle were studied. A total of 21 species of 9239 beetles were collected. Chlaenius pallipes), ceatus), touzalini accounts for 41.1777 and 17.07, respectively, which is the dominant species in this area. The results showed that the richness of four adjacent alfalfa edge areas was shelterbelt-alfalfa edge wheat-alfalfa edge field = corn-alfalfa edge land leisure land-alfalfa edge land. The diversity was wheat-alfalfa fringe shelterbelt, alfalfa fringe corn, alfalfa margin leisure land and alfalfa edge land, and the evenness index and dominance index of wheat-alfalfa edge land were the highest. The diversity index of the alfalfa marginal land was significantly higher than that of the adjacent crops, and the diversity index of the former was significantly higher than that of the latter. There was obvious seasonal migration between the marginal zone of alfalfa field and the marginal zone of adjacent crop field, and the migration dynamics were significantly affected by the farming operations such as different crop types, cutting and irrigation of alfalfa.
【作者單位】： 寧夏大學(xué)農(nóng)學(xué)院;寧夏大學(xué)西北退化生態(tài)系統(tǒng)恢復(fù)與重建國(guó)家重點(diǎn)實(shí)驗(yàn)室培育基地;
【基金】：國(guó)家自然科學(xué)基金(31260429) 教育部高校博士點(diǎn)科研專(zhuān)項(xiàng)基金(20126401110003)資助
【分類(lèi)號(hào)】：S186

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