【摘要】：陳山紅心杉(Cunninghania lanceolata)是江西特有樹種,獲國家地理標(biāo)志保護(hù)。目前關(guān)于其植物—土壤關(guān)系的研究較少。以不同林齡(5、10、20和40a)陳山紅心杉為對象,研究了其根際和非根際土壤有機(jī)碳、氮含量和根際效應(yīng)。結(jié)果表明:根際pH略小于非根際,有機(jī)碳和氮素總體上大于非根際。隨林齡的增加,根際和非根際土壤有機(jī)碳和氮含量先降后增;有機(jī)碳、全氮和有機(jī)氮的根際效應(yīng)先增后降;銨態(tài)氮、硝態(tài)氮和無機(jī)氮的根際效應(yīng)先降后趨于平緩;pH和堿解氮的根際效應(yīng)變化平緩。氮含量對根際和非根際土壤pH和有機(jī)碳的影響為全氮無機(jī)氮堿解氮;堿解氮和全氮的根際效應(yīng)分別對pH和有機(jī)碳根際效應(yīng)影響最大。隨著林齡的增加,硝態(tài)氮的比重高于銨態(tài)氮,應(yīng)注意反硝化作用可能造成的氮素流失,同時(shí)林地土壤養(yǎng)分下降,在10 a前后應(yīng)注意林地有機(jī)質(zhì)和氮素的補(bǔ)充,以防地力衰退。
[Abstract]:(Cunninghania lanceolata) is a unique tree species in Jiangxi province and is protected by national geographical indications. At present, there are few researches on the relationship between plant and soil. The effects of organic carbon, nitrogen content and rhizosphere effect on the rhizosphere and non-rhizosphere soil of Pinus chenshanensis were studied in different forest ages (5 ~ 10 ~ 10 ~ 20 and 40 years). The results showed that the pH of rhizosphere was slightly smaller than that of non-rhizosphere, and that of organic carbon and nitrogen was higher than that of non-rhizosphere. With the increase of forest age, the content of organic carbon and nitrogen in rhizosphere and non-rhizosphere soil decreased first and then increased, the rhizosphere effect of organic carbon, total nitrogen and organic nitrogen increased first and then decreased. The rhizosphere effect of nitrate nitrogen and inorganic nitrogen decreased first and then tended to flatten the changes of pH and alkali-hydrolyzed nitrogen. The effects of nitrogen content on pH and organic carbon in rhizosphere and non-rhizosphere soil were total nitrogen inorganic nitrogen alkali-hydrolyzed nitrogen and total nitrogen had the greatest effect on pH and organic carbon rhizosphere effect respectively. With the increase of forest age, the proportion of nitrate nitrogen is higher than that of ammonium nitrogen, so we should pay attention to the loss of nitrogen caused by denitrification and the decrease of soil nutrients in forestland, and should pay attention to the supplement of organic matter and nitrogen in forestland before and after 10 years, in order to prevent soil fertility from declining.
【作者單位】： 中國林業(yè)科學(xué)研究院森林生態(tài)環(huán)境與保護(hù)研究所國家林業(yè)局森林生態(tài)環(huán)境重點(diǎn)實(shí)驗(yàn)室;江西農(nóng)業(yè)大學(xué)林學(xué)院江西省森林培育重點(diǎn)實(shí)驗(yàn)室;江西特色林木資源培育與利用2011協(xié)同創(chuàng)新中心;江西省林業(yè)科學(xué)院;
【基金】：國家“十三五”重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(2016YFD0600303-01) 江西省林業(yè)科技創(chuàng)新項(xiàng)目(201404) 國家自然科學(xué)基金項(xiàng)目(31560204)資助
【分類號】：S714

【相似文獻(xiàn)】

相關(guān)期刊論文 前7條

1 賀永華;沈東升;朱蔭湄;;根系分泌物及其根際效應(yīng)[J];科技通報(bào);2006年06期

2 衛(wèi)云燕;尹華軍;劉慶;黎云祥;;夜間增溫和施肥對川西亞高山針葉林兩種樹苗根際效應(yīng)的影響[J];生態(tài)學(xué)報(bào);2011年03期

3 王建林,劉芷宇;重金屬在根際中的化學(xué)行為——Ⅱ.土壤中吸附態(tài)銅解吸的根際效應(yīng)[J];應(yīng)用生態(tài)學(xué)報(bào);1990年04期

4 米國華;受基因控制的植物根際效應(yīng)[J];中國農(nóng)業(yè)科技導(dǎo)報(bào);1999年04期

5 劉紹雄;王明月;楊宇明;熊智;王金華;繆�？�;張敬宜;王娟;;劍湖濕地湖濱帶5種植物群落類型氮和磷根際效應(yīng)[J];環(huán)境科學(xué)與技術(shù);2013年10期

6 辛國榮,岳朝陽,李雪梅,楊中藝;“黑麥草-水稻”草田輪作系統(tǒng)的根際效應(yīng) Ⅱ.冬種黑麥草對土壤物理化學(xué)性狀的影響[J];中山大學(xué)學(xué)報(bào)(自然科學(xué)版);1998年05期

7 ;[J];;年期

相關(guān)會(huì)議論文 前3條

1 楊程;徐程揚(yáng);;根系分泌物及根際效應(yīng)研究綜述[A];森林可持續(xù)經(jīng)營與生態(tài)文明學(xué)術(shù)研討會(huì)論文集[C];2008年

2 陳希;胡小飛;陳伏生;李敬;王方超;丁彰琦;劉煜;;酸沉降對茶園土壤氮磷轉(zhuǎn)化及其根際效應(yīng)的影響[A];生態(tài)文明建設(shè)中的植物學(xué)：現(xiàn)在與未來——中國植物學(xué)會(huì)第十五屆會(huì)員代表大會(huì)暨八十周年學(xué)術(shù)年會(huì)論文集——第2分會(huì)場：植物生態(tài)與環(huán)境保護(hù)[C];2013年

3 祁紅艷;楊清培;陳伏生;余定坤;施建敏;歐陽明;;毛竹向闊葉林?jǐn)U張策略:根際效應(yīng)[A];生態(tài)文明建設(shè)中的植物學(xué)：現(xiàn)在與未來——中國植物學(xué)會(huì)第十五屆會(huì)員代表大會(huì)暨八十周年學(xué)術(shù)年會(huì)論文集——第2分會(huì)場：植物生態(tài)與環(huán)境保護(hù)[C];2013年

相關(guān)碩士學(xué)位論文 前2條

1 孔令剛;多代連作楊樹人工林土壤根際效應(yīng)的研究[D];山東農(nóng)業(yè)大學(xué);2007年

2 祁紅艷;氮磷根際效應(yīng)：毛竹擴(kuò)張的潛在策略[D];江西農(nóng)業(yè)大學(xué);2014年

，

本文編號：2211993