本文關(guān)鍵詞： 季節(jié)性放牧 羊草功能性狀 敏感性指標(biāo) 惰性指標(biāo)　出處：《中國草地學(xué)報(bào)》2017年05期 　論文類型：期刊論文

【摘要】：以內(nèi)蒙古典型草原為對象,比較研究了羊草功能性狀對放牧的響應(yīng)。2016年,在羊草種群生物量高峰期(8月)測定了連續(xù)4年放牧(2012~2015年)和無牧條件下的株高、葉總長、地上生物量、莖質(zhì)量、總?cè)~面積和莖粗等17個(gè)性狀指標(biāo),結(jié)果顯示:經(jīng)過4年放牧羊草株高、葉下莖高、葉層分布高度、莖質(zhì)量、整株質(zhì)量、第1片葉長度顯著降低(P0.05),第1片葉角度、葉展顯著增大(P0.05),這8個(gè)指標(biāo)為敏感性指標(biāo);其余9個(gè)指標(biāo)為惰性指標(biāo)。
[Abstract]:The responses of functional traits of Leymus chinensis to grazing were compared with those of typical grassland in Inner Mongolia. 2016. The plant height, total leaf length, aboveground biomass and stem mass of Leymus chinensis were measured at the peak of the population biomass of Leymus chinensis (August) and under the condition of no grazing from 2012 to 2015. The total leaf area and stem diameter were 17 characters. The results showed that after 4 years of grazing, the plant height of Leymus chinensis, the height of lower leaf stem, the height of leaf layer distribution, the quality of stem and the whole plant mass were obtained. The length of the first leaf decreased significantly (P 0.05), and the angle of the first leaf increased significantly (P 0.05). These eight indexes were sensitive indexes. The remaining 9 indexes are inert.
【作者單位】： 內(nèi)蒙古大學(xué)生態(tài)與環(huán)境學(xué)院;
【基金】：國家重大基礎(chǔ)研究項(xiàng)目(2014CB1388051) 內(nèi)蒙古自然科學(xué)基金重大項(xiàng)目(2015ZD05) 國家科技支撐項(xiàng)目(2013BAC09B03)
【分類號】：S812
【正文快照】： 放牧不僅改變草地生態(tài)系統(tǒng)的植被組成和群落結(jié)構(gòu)[1],而且還會(huì)引起種群大小和植物個(gè)體形態(tài)和結(jié)構(gòu)的改變。草食動(dòng)物通過采食等行為作用于局部植物的生存與滅絕來動(dòng)態(tài)調(diào)控植物[2],同時(shí)也受植物的作用來維持草地生態(tài)系統(tǒng)過程[3]。因此,草食動(dòng)物的采食過程勢必會(huì)改變植物個(gè)體的一些，

本文編號：1449303