• <mark id="l0x4h"></mark>

      <u id="l0x4h"></u>
        <ins id="l0x4h"></ins>

      1. <bdo id="l0x4h"></bdo>
      2. 渾善達克沙地飛播區不同恢復階段植物群落結構動態變化
        DOI:
        作者:
        作者單位:

        作者簡介:

        通訊作者:

        中圖分類號:

        基金項目:

        內蒙古自治區科技創新引導獎勵資金項目(20121607)


        Dynamic changes of plant community structure at different recovery stages of aerial-seeding region in Otindag Sandy Land
        Author:
        Affiliation:

        Fund Project:

        • 摘要
        • |
        • 圖/表
        • |
        • 訪問統計
        • |
        • 參考文獻
        • |
        • 相似文獻
        • |
        • 引證文獻
        • |
        • 資源附件
        • |
        • 文章評論
          摘要:

          為研究渾善達克沙地飛播區不同恢復階段植物群落結構動態變化,揭示飛播后渾善達克沙地植被恢復的特點和變化規律,于2013—2017年在渾善達克沙地11個飛播區進行了植被調查試驗,并從功能型角度出發,結合對應分析、關聯度分析以及Mann-Kendall趨勢分析等數據分析方法探討了飛播區植被恢復的階段性以及各功能型植物在群落中的地位和作用。結果顯示:渾善達克沙地飛播區19 a恢復時間共分為3個恢復階段,且飛播后,伴隨恢復時間的推移,喬木、灌木半灌木、多年生雜類草、一/二年生雜類草、多年生豆科牧草、多年生禾草、一/二年生禾草7個功能型植物間的相互依賴程度逐漸減弱;隨著恢復年限的增加,群落的穩定性逐漸增大。不同恢復階段,植被恢復的主導功能型并不唯一,可在不同階段進行適時管理,從而使植物群落的演替階段和整體發展趨勢更有利于退化沙地的植被恢復與重建。

          Abstract:

          The dynamic changes of plant community structures at different restoration stages in the aerial-seeding region in Otindag Sandy Land were studied,aiming to understand the restoration characteristics and change rules of vegetation restoration. From 2013 to 2017,vegetation survey tests were conducted in 11 aerial seeding areas in the Otindag Sandy Land. Correspondence analysis,correlation analysis,and Mann-Kendall trend analysis were used to analyze stages of vegetation restoration in the aerial seeding area and to discuss the status and role of each functional plant in the community based on a functional perspective. The results showed that it was divided into three recovery stages across 19 years. Moreover,after aerial seeding,the degree of dependence among the following seven functional plants of rubs/subshrubs,perennial weeds,annual/biennial weeds,perennial leguminous forage,perennial gramineous forage and annual/biennial gramineous forage,was decreased gradually.Community stability was increased by the number of recovery years. Dominant function type of vegetation restoration was not consistent in different restoration stages,resulting in timing management could be employed at different stages. Consequently,the succession stage and overall development trend of plant community are more conducive to the recovery and reconstruction of the vegetations in degraded sandy land.

          參考文獻
          相似文獻
          引證文獻
        引用本文

        慕宗杰,劉果厚,桂榮,蘇海林,李紅穎,劉利紅,曹瑞,姜瑩,王亞東.渾善達克沙地飛播區不同恢復階段植物群落結構動態變化[J].華中農業大學學報,2020,39(4):46-56

        復制
        分享
        文章指標
        • 點擊次數:
        • 下載次數:
        • HTML閱讀次數:
        • 引用次數:
        歷史
        • 收稿日期:2019-12-10
        • 最后修改日期:
        • 錄用日期:
        • 在線發布日期: 2020-07-30
        • 出版日期:
        牌九游戏