本文關(guān)鍵詞：半干旱黃土丘陵區(qū)不同整地方式下退化草地植物群落恢復(fù)特征　出處：《水土保持通報(bào)》2016年05期 　論文類型：期刊論文

  更多相關(guān)文章： 半干旱黃土丘陵區(qū) 整地方式 退化草地 植物群落恢復(fù)

【摘要】：[目的]對比分析2種造林整地措施處理后的草地植物群落特征,為寧南半干旱黃土丘陵區(qū)植被恢復(fù)和建設(shè)提供理論依據(jù)。[方法]以固定樣地與群落樣方調(diào)查數(shù)據(jù)為基礎(chǔ),對比了"88542"水平溝、魚鱗坑2種不同整地方式下群落動(dòng)態(tài)特征。[結(jié)果](1)在一定的時(shí)間尺度上,生境的異質(zhì)性對魚鱗坑整地植物群落的結(jié)構(gòu)影響較大,整地方式對植物群落結(jié)構(gòu)特征的影響不明顯。(2)生境條件的不同影響了群落的多樣性。魚鱗坑整地的植物群落由于生境的異質(zhì)性較大,促成了較高的多樣性。植物群落物種多樣性由高到低的順序?yàn)?魚鱗坑整地"88542"水平溝整地天然封育草地。(3)植物群落多樣性總體表現(xiàn)出隨著年限的延伸,整個(gè)示范區(qū)的植物群落物種的多樣性開始下降。[結(jié)論]不同人為干擾方式和不同生境對植物群落多樣性有明顯影響。
[Abstract]:[Objective] to provide theoretical basis for vegetation restoration and construction in semiarid loess hilly region of southern Ningxia by comparing and analyzing the characteristics of grassland plant communities treated by two afforestation and land preparation measures. [Methods based on the investigation data of fixed plot and community sample, the community dynamic characteristics of "88542" horizontal ditch and fish-scale pit were compared. [Results (1) on a certain time scale, the heterogeneity of habitat had a great influence on the structure of the plant community in the fish-scale pit. The difference of habitat conditions affected the diversity of plant community, and the plant community prepared in fish-scale pit was more heterogeneity because of the heterogeneity of habitat. The order of plant community species diversity from high to low is: fish scale pit land preparation "88542" horizontal ditch land preparation natural fencing grassland. The diversity of plant communities showed the extension of the years. The species diversity of plant communities in the entire demonstration area began to decline. [Conclusion: the diversity of plant communities is affected by different anthropogenic disturbance patterns and different habitats.
【作者單位】： 寧夏農(nóng)林科學(xué)院荒漠化治理研究所;寧夏農(nóng)業(yè)綜合開發(fā)辦公室;
【基金】：國家科技支撐計(jì)劃課題“寧南山區(qū)脆弱生態(tài)系統(tǒng)恢復(fù)及可持續(xù)經(jīng)營技術(shù)集成與示范”(2015BAC01B01) 寧夏“十三五”重大攻關(guān)項(xiàng)目“寧夏多功能林業(yè)分區(qū)域研究與示范” 寧夏區(qū)自然資助項(xiàng)目(NZ14194) 寧夏農(nóng)林科學(xué)院科技創(chuàng)新先導(dǎo)資金項(xiàng)目(NKYJ-14-23) 寧夏農(nóng)林科學(xué)院自主研發(fā)項(xiàng)目(NKYJ-15-19)
【分類號】：S812
【正文快照】： 生物多樣性的研究是全球關(guān)注的重點(diǎn)之一,它與全球變化、可持續(xù)發(fā)展并成為世界各國所面臨的主要問題。生物多樣性是所有生命系統(tǒng)的固有特征,是人類賴以生存的基礎(chǔ)。但是隨著人類活動(dòng)范圍的擴(kuò)大,資源利用強(qiáng)度的加深,全球各類生態(tài)系統(tǒng)受到各種干擾破壞,發(fā)生了不同程度的受損和退

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