English
聯系我們
網站地圖
郵箱
舊版回顧



亞熱帶生態所揭示喀斯特草地生態系統菌根真菌對外源氮輸入的響應機制

文章來源:亞熱帶農業生態研究所   發布時間:2019-05-10  【字號:     】  

  近日,中國科學院亞熱帶農業生態研究所環江喀斯特生態系統觀測研究站研究員王克林團隊在西南喀斯特草地生態系統菌根真菌對外源氮輸入的響應研究中獲得新進展。

  我國是世界上喀斯特面積最大的國家,不合理的土地利用導致該區養分快速丟失,植被演替初級階段普遍處于“氮限制”狀態。外源氮(N)輸入是生態系統氮限制消減的重要途徑,而土壤叢枝菌根真菌(AMF)能有效增加植物對N和磷(P)等礦質養分的吸收和轉運。目前,喀斯特草地土壤AMF對N輸入的響應及其效應仍不清楚。

  基于此,以典型喀斯特自然草地生態系統為研究對象,通過模擬N沉降(N:100 kg N ha-1 yr-1;P:50 kg P ha-1 yr-1)和引種不同密度豆科固氮灌木(紫穗槐和深紫木藍)試驗,研究了AMF豐度、多樣性和群落結構的響應特征。研究結果發現,Glomus是喀斯特地區的優勢種屬(圖3)。不同的季節顯著影響AMF群落組成與結構,AMF多樣性在生長季(夏季)低于非生長季(冬季),但是AMF豐度呈現相反的響應方式。在生長季,N添加顯著增加AMF豐度,而P添加顯著提高AMF多樣性(圖1,2)。但是,N和P的添加沒有顯著改變AMF的群落結構(圖3)。對于固氮灌木的種植,不同豆科植物和種植密度的交互作用顯著影響AMF豐度和群落結構。在生長季,低密度種植固氮灌木顯著提高AMF豐度,而高密度種植深紫木藍顯著減少AMF豐度(圖4)。不同途徑(沉降N和生物固N)N輸入通過影響土壤可利用性養分改變AMF群落。研究結果說明:N輸入會加劇喀斯特草地土壤P營養的相對不足,草叢群落通過改善土壤AMF群落提高P的吸收。在喀斯特退化區域植被恢復過程中,豆科固氮植物引入與菌根真菌群落對提升生態系統養分有效性具有重要潛力。這些研究為脆弱生態系統的恢復和農業生態系統優化管理提供理論基礎和數據支撐。

  以上研究成果近期分別發表在Biology and Fertility of Soils Science of the Total Environment上。研究得到國家重點研發項目、國家自然科學基金、中科院青年創新促進會、中科院亞熱帶農業生態研究所青年創新團隊項目的資助。

  論文鏈接:1 2 

 

圖1 AMF豐度和多樣性對自然草地N和P添加的響應

 

圖2 自然草地N和P添加下不同季節AMF群落結構的差異

 

圖3 自然草地N和P添加對AMF群落結構的影響

 

圖4 AMF豐度、多樣性和群落結構對不同豆科灌木和種植密度的響應




(責任編輯:葉瑞優)

附件:

專題推薦

相關新聞


© 1996 - 中國科學院 版權所有 京ICP備05002857號  京公網安備110402500047號  聯系我們

地址:北京市三里河路52號 郵編:100864

500万彩票www.w984.com www.500859.com | www.622677.com | www.886694.com | www.352291.com | pn54.com | 大赢家彩票平台www.576679.com | 597226.com | www.nx14.com | www.001481.com | www.110906.com | www.211433.com | www.46766.cc | www.78wg.com | www.cp6928.com | www.24.cx | www.8cx.cc | www.09gb.com | www.23kx.com | www.8dy.cc | www.029950.com | www.005939.com | www.021140.com | www.64727.com | www.255627.com | www.303550.com | www.297879.com | www.363597.com | www.563828.com | www.581294.com | www.33693.com | www.45444.cc | www.103200.com | www.245314.com | www.807606.com | www.1373.vip | www.051598.com | www.057877.com | www.230021.com | www.509608.com | www.668028.cc | www.953882.com | www.984845.com | 083802.com | 950572.com | www.lv5.com | www.5011.vip | www.37355.com | www.95797.cc | www.035169.com | 881941.com | www.pp21.com | www.038243.com | www.359777.com | www.002318.com | www.048858.com | www.135543.com | www.311299.com | www.429600.com | www.553308.com | www.692313.com | 332324.com | 575054.com | www.xw65.com | www.84kd.com | www.8273.cc | www.32182.cc | www.017431.com | www.137784.com | www.212282.com | www.364773.com | www.659675.com | www.985845.com | 804026.com | 948726.com | 网易彩票www.095wy.com | www.hr69.com | www.03131.cc | 576941.com | www.xa78.com | www.43iz.com | www.563129.com | www.590094.com | www.777342.com | www.445033.com | www.603112.com | www.839934.com | www.3226.xyz | www.36553.cc | www.660935.com | www.975563.com | liuhcai047048.com | 607332.com | 大赢家彩票平台www.068659.com | www.nm01.com | www.32569.cc | www.076000.com | www.198577.com | www.442256.com | www.436.xyz | www.6599.win | www.4975.cm | www.09lo.com | www.590.com | www.6oo.cc | www.cai8234.com | 061528.com | 200207.com | www.63763.cc | www.203638.com | www.280329.com | www.418355.com | www.481193.com | www.600154.com | www.397591.com | www.63922.cc | www.102630.com | www.270051.com | www.443530.com | www.588217.com | www.820358.com | www.539680.com | www.753295.com | www.pp11.cc | www.rx30.com | 365409.cc | 983410.com | www.969235.com | www.884025.com | www.861351.com | 947726.com | www.965455.com | www.699208.com | www.502787.com | www.lq42.com | www.067.date | www.062886.com | www.497900.com | www.hq80.com | www.56fx.com | www.122.cc | www.020940.com | www.52565.com | www.289907.com | www.576267.com | www.130966.com | www.cp9913.com | cai2227.com | www.ne60.com | www.1884.win | www.5333.me | 426228.com | zb10.com | www.130017.com | www.576200.com | www.644557.com | www.724835.com | 百姓彩票www.bxcp3.com | www.uw95.com | www.cp2234.com | 彩客网www.373909.com | 465707.com | 029646.com | 954146.com | 164128.com | 967847.com | www.tk35.cc | www.78ej.com | www.761382.com | www.853811.com | www.123972.com | www.196688.com | www.291920.com | 500彩票www.50051d.com | www.mu50.com | www.77vg.com | www.4902.top | ix91.com | 632059.com | www.kp05.com | 149920.com | 791817.com | www.557082.com | www.563321.com | www.602160.com | www.839960.com | 114893.com | 081218.com | 19145.cc | www.kv71.com | www.69yi.com | www.17at.com | www.1800.cm | www.193001.com | www.410908.com | www.565707.com | www.618808.com | 03oc.com | www.886129.com | 1999.net | 833920.com | 彩乐乐www.cll168.com | www.cp7598.com | www.41599.com | www.95713.com | www.023917.com | 585393.com | 358707.com | 21is.com | 375325.com | 83rm.com | 731492.com | www.hv95.com | www.as74.com | www.hy29.com | www.0598.bid | www.310135.com | www.370141.com | www.735921.com | www.688494.com | 63ht.com | 465173.com | 808361.com | 成功彩票www.le33.cc | www.cp409.com | www.cp0505.com | www.ck1.com | www.qe79.com | www.69hr.com | www.59ch.com | www.495.cn | www.168044.com | www.519197.com | www.590928.com | www.865016.com | www.888823.com | www.873738.com | www.831338.com | www.828427.com | www.886658.com | www.14fy.com | www.83oo.com | www.988819.com | www.980496.com | 069189.com | www.980071.com | www.5726.top | 587305.com | 051967.com | 464696.com | 897246.com | 博通彩票www.606614.com | www.0iz.com | www.13nt.com | www.30nf.com | www.3373.me | www.5682.cn | www.9065.vip | www.076036.com | www.036612.com | www.06529.com | www.6980.me | www.009631.com | www.036203.com | 5号彩www.585hc.com | www.027040.com | www.235008.com | www.318213.com | www.47eu.com | www.0092.com | www.60164.cc | www.033652.com | www.037172.com | www.716197.com | www.785819.com | www.799755.cc | www.799120.com | 004084.com | cai1119.com | 516906.com | 693507.com | 68148.com | 155736.com | www.21819.cc | www.6230.org | www.501.site | www.8790.vip | www.06460.com | www.30876.com | www.26dz.com | www.8348.vip | www.427007.com | www.625726.com | 7343.cc | 974382.com | www.cai1644.com | www.nj10.com | www.29nj.com | www.44bn.com | www.9651.biz | www.23374.com | www.060507.com | www.128572.com | www.483720.com | www.446789.cc | www.c38.net | www.37eq.com | www.08jd.com | www.688545.com | www.960489.com | www.75289.com | www.492014.com | www.954819.com | www.6354.xyz | www.96vk.com | www.720.in | www.28515.cc | www.86652.com | www.95728.com | www.40916.com | www.26280.cc | www.311986.com | www.387588.com | www.14324.com | 365342.cc | 874133.com | www.71038.com | www.2258.pw | www.057085.com | www.001388.com | www.010291.com | 4756.biz | www.b12.com | www.04do.com | 2646.com | www.74221.com | www.547851.com | www.702326.com | www.893201.com | www.h33.org | www.6938.top | www.23415.cc | www.76338.cc | www.116097.com | www.kp6.com | www.871256.com | www.25554.cc | www.47707.com | www.72114.com | www.038758.com | www.610592.com | www.757208.com | www.750172.com | www.689273.com | www.685398.com | www.663299.com | www.659314.com | www.606201.com | www.612111.com | www.588157.com | www.539752.com | www.358734.com | www.334566.com | www.615008.com | www.882212.com | www.838647.com | www.778504.com | www.708181.com | www.644605.com | www.687500.com | www.652342.com | www.574781.com | www.530867.com | www.506002.com | www.458001.com | www.392285.com | www.314477.com | www.214299.com | www.178813.com | www.206645.com | www.743126.com | www.773836.com | www.862303.com | www.947482.com | www.388236.com | www.953408.com | www.908901.com | 79570.com | www.931684.com | www.826372.com | 330139.com | www.968610.com | 866866.com | 980331.com | 091619.cc | 225750.com | 756591.com | www.ke94.com | www.350577.com | www.506189.com | www.155804.com | www.236050.com | www.097624.com | www.8332.cm | www.77769.cc | www.74955.com | www.185061.com | www.554756.com | www.653500.com | www.572622.com | www.827246.com | www.61790.com | www.056671.com | www.7667.pw | www.959940.com | www.057076.com | www.82857.cc | www.16896.com | www.692161.com | www.73279.com | www.269252.com | www.116988.cc | www.554472.com | www.5332.biz | www.59kw.com | www.ip07.com | www.87cd.com | www.yd29.com | www.dm96.com | www.3jh.cc | www.2bq.com | www.lv21.cc | www.1815.biz | www.808801.com | 502716.com | 654127.com | www.931656.com | www.872084.com | www.649448.com | www.398345.com | www.276442.com | www.077280.com | www.036728.com | www.735832.com | www.505763.com | www.212537.com | www.003648.com | www.0558.me | www.sy03.com | www.067948.com | www.52051.cc | www.06090.com | www.yz92.com | www.97lc.com | www.kq37.com | www.fe59.com | www.7053.org | www.wb10.com | 276925.com | 103766.com | 639534.com | www.900234.com | www.577007.com | www.262906.com | www.086293.com | www.31253.com | www.20bd.com | E彩堂www.43818u.com | 810090.com | www.960415.com | www.726520.com | www.393975.com | www.421304.com | www.2996.cc | www.527600.com | www.449951.com | www.7305.loan | www.23668.cc | www.34779.com | www.9027.vip | www.1987.me | www.3152.biz | www.3322.vip | www.874.mobi | www.1073.cc | www.3908.vip | www.613.net | www.11192.cc | www.3257.biz | www.x25.cn | www.6336.net | 984723.com | 19745.com | www.22067.com | www.71ld.com | www.077056.com | www.77cf.cc | www.899759.com | www.886312.com | www.790322.com | www.75dj.cc | www.8329.biz | www.2643.vip | www.2763.cc | www.0415.date | www.98612.cc | www.33486.com | www.53132.cc | www.160678.com | www.15408.com | www.6me.cc | www.fb03.com | www.zn09.com | www.793934.com | 大赢家彩票平台www.273503.com | www.00683.com | www.6065.vip | www.063461.com | 好彩头彩票www.23579f.com | 878296.com | 易彩网www.36166y.com | 500彩票www.857981.com | www.qb63.com | www.6116.vip | www.528675.com | www.547961.com | www.606114.com | www.484976.com | www.020644.com | www.091062.com | www.289230.com | www.970134.com | www.505164.com | www.768616.com | www.592379.com | www.625287.com | www.677831.com | www.900689.com | www.961263.com | www.7rn.com | 663860.com | www.954615.com | www.816991.com | www.qa5.cc | 福利彩票www.99677t.com | www.11095.com | www.79wk.com | www.1912.cm | 017265.com | www.cs58.com | www.513131.com | www.586910.com | www.789707.com | www.637529.com | www.87678.cc | www.08181.cc | www.2229.vip | www.203151.com | www.99135.com | www.117973.com | www.169746.com | www.178824.com | www.261858.com | www.315716.com | www.35vg.com | www.393576.com | www.386329.com | www.258857.com | www.037937.com | www.2846.cc | www.799365.cc | www.1233.net | www.5252.tv | www.36vo.com | www.1874.cn | www.018325.com | www.to12.com | www.86.org | www.07ki.com | www.br08.com | www.iu89.com | www.le74.com | www.4jv.com | www.555152.com | www.2490.top | www.401438.com | www.530239.com | www.730096.com | www.765523.com | www.634476.com | www.530405.com | www.602520.com | www.ch56.com | 482380.com | www.980754.com | www.732562.com | 大赢家彩票平台www.597933.com | www.53no.com | www.700414.com | www.579704.com | www.661048.com | 474000.com | www.956199.com | 044861.com | www.84jw.com | www.t47.cn | 902496.com | 011694.com | yz90.com | www.am37.com | 625418.com | www.022656.com | www.6430.vip | www.97qu.com | www.327540.com | www.208657.com | www.188325.com | www.128969.com | www.71151.com | www.03sv.com | www.8073.vip | www.1300.xyz | www.974425.com | www.750087.com | www.771756.com | www.869097.com | www.810192.com | www.527068.com | www.615329.com | www.3017.cm | www.459646.com | www.01263.com | www.77mk.com | 525305.com | 137490.com | 219085.com | www.832710.com | www.885732.com | 369588.cc | 663436.com | www.685939.com | www.322992.com | www.356117.com | www.978480.com | 024943.com | 500彩票www.330716.com | 136692.com | www.973322.com | www.659148.com | www.647099.com | www.216266.com | www.149655.com | www.292871.com | www.yr58.com | www.53al.com | www.45wf.com | www.b90.org | www.ks23.com | www.dy97.cc | 众彩www.348116.com | 500彩票www.3126a.com | 332941.com | 939728.com | www.960029.com | www.789839.com | www.138822.com | www.347198.com | www.31ud.com | 500彩票www.50064x.com | 127130.com | www.837990.com | www.825322.com | www.188783.com | www.20424.com | www.52ar.cc | www.41cp.com | 367091.com | 607023.com | www.783696.com | www.18259.cc | www.382592.com | www.sy29.cc | www.ox62.com | www.871843.com | www.596113.com | www.568854.com | www.127123.com | www.75733.cc | www.29rv.com | www.559718.com | www.761101.com | www.862369.com | www.977899.cc | www.820516.com | www.895871.com | www.bg29.cc | 62409.com | www.805780.com | www.417297.com | 251944.com | 978313.com | cp065.com | 07977.com | www.25of.com | www.125720.com | www.379371.com | www.379792.com | www.896310.com | www.752907.com | www.788447.com | 全民乐彩票www.2934b.com | 15uk.com | www.986767.com | www.872119.com | 237705.com | 378515.com | 358614.com | 401163.com | www.870550.com | 015945.com | 621807.com | www.968452.com | 大赢家彩票平台www.723013.com | www.7067.vip | www.07308.com | www.11388.com | www.71205.com | www.543.cm | www.1000.gg | www.717130.com | 834774.com | www.906854.com | www.727488.com | www.623655.com | www.525187.com | www.321920.com | www.37wj.com | www.59329.cc | 238759.com | 047263.com | 573885.com | www.545638.com | www.633010.com | 739714.com | 829452.com | 954315.com | 394008.com | www.897888.cc | www.455300.com | www.045977.com | 075283.com | www.885894.com | www.839226.com | www.769233.com | www.30077.cc | 网易彩票www.071wy.com | 336456.com | www.778097.com | www.92735.cc | www.2375.vip | www.20hk.com | www.947375.com | www.753058.com | www.591422.com | www.434637.com | www.dx97.com | www.523937.com | www.187115.com | www.470165.com | www.986926.com | www.590661.com | www.038386.com | www.10151.com | www.92780.com | www.36623.cc | www.8898.loan | www.ca2.cc | www.131206.com | www.318698.com | www.11735.com | www.5703.com | 949770.com | www.568413.com | www.333902.com | 429017.com | www.df0.cc | www.632070.com | www.396553.com | www.171286.com | www.95400.cc | www.6513.xyz | www.f04.net | www.24049.cc | 132606.com | 973457.com | pg88.com | www.682343.com | www.212349.com | www.3702.cm | www.a