本文選題：華北落葉松 + 生態(tài)化學(xué)計(jì)量學(xué)��； 參考：《西北農(nóng)林科技大學(xué)》2017年碩士論文

【摘要】：近年來(lái),人工林面積迅速增加,但隨著人工林純林集約化的多代連栽,地力衰退問(wèn)題越來(lái)越突出。導(dǎo)致人工林地力衰退的因素是綜合的,根本原因是人類活動(dòng)對(duì)人工林土壤生態(tài)系統(tǒng)不合理的干擾和破壞。本研究應(yīng)用連續(xù)施肥手段,結(jié)合生態(tài)化學(xué)計(jì)量學(xué)理論,深入探究中林齡華北落葉松人工林(Larix principis-rupprechtii Mayr)針葉和土壤的C、N、P含量及計(jì)量比的相互關(guān)系,試圖找出落葉松人工林生長(zhǎng)發(fā)育的限制性營(yíng)養(yǎng)元素以及探究外源N、P元素的添加對(duì)土壤肥力的改善作用,以期了解人工林生態(tài)系統(tǒng)的養(yǎng)分分布格局及其內(nèi)在循環(huán)機(jī)制。結(jié)果表明:(1)、各個(gè)施肥處理對(duì)華北落葉松人工林針葉C含量影響不顯著,但在不同程度上影響了針葉的N、P含量,進(jìn)而影響了落葉松針葉的C、N、P計(jì)量比,特別是針葉N:P比值。除了單施磷肥外,處理N1、N2、N1P、N2P均在一定程度增加了針葉的N:P比,其中處理N1、N2、N2P下的針葉N:P顯著大于對(duì)照組(CK),以處理N2P的施肥效果最優(yōu)。(2)、氮磷配施(N1P、N2P)顯著影響了土壤的C、N、P含量及計(jì)量比,優(yōu)于其他幾個(gè)處理。各施肥處理在一定程度降低了土壤C:N比值,增加了土壤C:P和N:P比值。除了施肥處理P外,土壤C:P高于我們土壤C:P的平均值,也高于全球不同生態(tài)系統(tǒng)土壤C:P的平均值,說(shuō)明該區(qū)域土壤P缺乏。另外,施肥處理N1P和N2P下,土壤C:P與土壤P相關(guān)性不顯著,說(shuō)明氮磷配施對(duì)土壤P缺乏狀態(tài)有一定的改善作用。各處理下,土壤C:N和N:P顯著增加,且土壤C:N和N:P與N之間存在著顯著相關(guān)關(guān)系,說(shuō)明該區(qū)域植物生長(zhǎng)易受N限制,施肥處理在一定程度上改善了土壤可利用N缺乏的狀況。(3)、落葉松針葉和土壤的C、N、P含量及化學(xué)計(jì)量比之間不僅存在著一定的相關(guān)關(guān)系,也存在一定的差異,總體上計(jì)量比間的關(guān)聯(lián)性要比養(yǎng)分元素高。針葉的C、N、P含量和C:N、C:P比值高于土壤的,針葉的N:P比值小于土壤的,這種差異代表了植物養(yǎng)分需求和土壤養(yǎng)分供應(yīng)間的競(jìng)爭(zhēng)和互作關(guān)系。由于C在植物體內(nèi)較穩(wěn)定,一般認(rèn)為全球生態(tài)系統(tǒng)主要是通過(guò)改變的植株的N、P含量而影響C:N:P比值。
[Abstract]:In recent years, the area of plantations has increased rapidly, but with the intensive planting of pure plantations, the problem of soil fertility decline is becoming more and more serious. The factors leading to the soil fertility decline of plantation are comprehensive, and the fundamental reason is the unreasonable disturbance and destruction of soil ecosystem caused by human activities. In this study, continuous fertilization and ecochemometrics theory were used to explore the relationship between the contents of C ~ (+) N ~ (+) P in coniferous leaves of Larix principis-rupprechtii Mayr and soil, and the ratio of N ~ (2 +) to N ~ (2 +) in the middle aged larch plantation of North China (Larix principis-rupprechtii Mayr). This paper attempts to find out the limiting nutrient elements in the growth and development of Larix gmelinii plantation and to explore the effect of exogenous NbP on soil fertility in order to understand the nutrient distribution pattern and its internal circulation mechanism of plantation ecosystem. The results showed that different fertilization treatments had no significant effect on the coniferous C content of larch plantations in North China, but to some extent affected the N ~ (+) P content of needles, and then influenced the C ~ (+) N ~ (+) P ratio of larch needles, especially the N: P ratio of needles. In addition to N _ 1N _ 2N _ 2N _ 2N _ 1P _ 2P, N _ 1N _ 2N _ 2N _ 2P increased the N: P ratio of needles to a certain extent, and the N _ (1) N _ (2) N _ (2) N _ (2) N _ (2) P was significantly higher than that in the control group, so that N _ (2) N _ (2) and N _ (1) P (N _ (1) P _ (2) N _ (2) P) significantly affected the content and the metering ratio of N ~ (2 +) N ~ (2 +) P in soil. Better than the others. The ratio of C to N in soil was decreased and the ratio of C to P and N to P in soil were increased in different fertilization treatments. In addition to fertilization treatment, soil C _ (1) P was higher than the average value of soil C _ (1) P in our soil, and also higher than that of soil C _ (1) P in different ecosystems of the world, which indicated that soil P was deficient in this region. In addition, under N 1P and N 2P fertilization treatments, the correlation between soil C1P and soil P was not significant, which indicated that the combined application of N and P could improve the status of soil P deficiency to some extent. Under different treatments, soil C: n and N: P increased significantly, and there was a significant correlation between soil C: n and N: P, indicating that the growth of plants in this region was easily restricted by N. Fertilization improved the available N deficiency in soil to a certain extent. There was not only a certain correlation but also some differences between the CnP content and the stoichiometric ratio between larch needles and soil. Overall, the correlation between measurement ratios is higher than nutrient elements. The ratio of N to P in needle was higher than that in soil, and the ratio of N to P in needle was lower than that in soil. This difference represented the competition and interaction between plant nutrient demand and soil nutrient supply. Since C is more stable in plants, it is generally believed that the global ecosystem affects the ratio of C to N: P mainly by changing the content of N + P in plants.
【學(xué)位授予單位】：西北農(nóng)林科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：S714

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李建國(guó)，，陳國(guó)海，賀慶棠，邵海榮;華北落葉松生態(tài)適應(yīng)性的定量分析與評(píng)價(jià)[J];生態(tài)學(xué)報(bào);1996年02期

2 侯庸,王桂青,張良;華北落葉松群落與土壤肥力的關(guān)系[J];河北大學(xué)學(xué)報(bào)(自然科學(xué)版);2001年03期

3 孔德龍;劉江林;;迭部林區(qū)華北落葉松引種試驗(yàn)效果淺析[J];甘肅科技;2009年21期

4 張欽弟;張金屯;蘇日古嘎;張斌;程佳佳;;龐泉溝自然保護(hù)區(qū)華北落葉松種群生命表與譜分析[J];應(yīng)用與環(huán)境生物學(xué)報(bào);2010年01期

5 郭向民;梁愛(ài)林;高素瓊;;陜北勞山林區(qū)華北落葉松引種育苗、造林試驗(yàn)初報(bào)[J];科技信息;2010年16期

6 田春麗;;太行山區(qū)華北落葉松平地全光育苗技術(shù)探討[J];科技情報(bào)開(kāi)發(fā)與經(jīng)濟(jì);2010年18期

7 張文濤;江源;董滿宇;楊艷剛;楊浩春;;蘆芽山不同海拔華北落葉松徑向生長(zhǎng)與氣候因子關(guān)系的研究[J];北京師范大學(xué)學(xué)報(bào)(自然科學(xué)版);2011年03期

8 董滿宇;江源;王明昌;張文濤;楊浩春;;蘆芽山林線華北落葉松徑向變化季節(jié)特征[J];生態(tài)學(xué)報(bào);2012年23期

9 江萍,孫向?qū)?華北落葉松酶活性及抗逆性機(jī)理研究[J];山西林業(yè)科技;2004年01期

10 韓芬;王輝;邊銀霞;李永兵;;華北落葉松枝葉揮發(fā)性物質(zhì)的化學(xué)成分及其化感作用[J];應(yīng)用生態(tài)學(xué)報(bào);2008年11期

相關(guān)會(huì)議論文 前9條

1 楊俊明;沈熙環(huán);趙志誠(chéng);;華北落葉松四類試材插穗生根性狀的遺傳、變異和利用[A];面向21世紀(jì)的中國(guó)林木遺傳育種——中國(guó)林學(xué)會(huì)林木遺傳育種第四屆年會(huì)文集[C];1997年

2 杜平;;華北落葉松平茬苗、扦插苗培育技術(shù)和造林效果[A];面向21世紀(jì)的中國(guó)林木遺傳育種——中國(guó)林學(xué)會(huì)林木遺傳育種第四屆年會(huì)文集[C];1997年

3 楊俊明;沈熙環(huán);趙士杰;賈桂霞;;華北落葉松扦插生根能力選擇及采穗圃營(yíng)建[A];持續(xù)發(fā)展，再創(chuàng)輝煌——中國(guó)林學(xué)會(huì)林木遺傳育種分會(huì)第五屆年會(huì)文集[C];2002年

4 楊俊明;沈熙環(huán);趙志誠(chéng);;華北落葉松采穗圃經(jīng)營(yíng)管理技術(shù)的研究[A];面向21世紀(jì)的中國(guó)林木遺傳育種——中國(guó)林學(xué)會(huì)林木遺傳育種第四屆年會(huì)文集[C];1997年

5 楊俊明;沈熙環(huán);賈桂霞;;提高華北落葉松良種實(shí)生繁殖效率的途徑和方法[A];持續(xù)發(fā)展，再創(chuàng)輝煌——中國(guó)林學(xué)會(huì)林木遺傳育種分會(huì)第五屆年會(huì)文集[C];2002年

6 薛繼志;周全良;;寧夏六盤山區(qū)華北落葉松優(yōu)樹(shù)資源調(diào)查及進(jìn)一步開(kāi)展研究利用工作的思考[A];第六屆全國(guó)林木遺傳育種大會(huì)論文集[C];2008年

7 楊民益;李理鋒;趙軍;張芳;;白樺與華北落葉松造林對(duì)比試驗(yàn)[A];寧夏林學(xué)會(huì)第二屆林業(yè)優(yōu)秀學(xué)術(shù)論文集[C];2011年

8 焦一之;吳志蓮;段淑懷;李永貴;;北京市潮關(guān)西溝流域華北落葉松立地指數(shù)的研究[A];第八屆海峽兩岸山地災(zāi)害與環(huán)境保育學(xué)術(shù)研討會(huì)論文集[C];2011年

9 李英武;楊斌;唐建寧;周全良;安永平;程曉福;樊亞鵬;;六盤山華北落葉松無(wú)性系種子園現(xiàn)狀分析及低產(chǎn)改良關(guān)鍵技術(shù)探討[A];第八屆寧夏青年科學(xué)家論壇（林業(yè)專題論壇）論文集[C];2012年

相關(guān)重要報(bào)紙文章 前9條

1 記者 李江天;我省禁止使用華北落葉松苗造林[N];遼寧日?qǐng)?bào);2008年

2 記者 崔國(guó)璽;遼寧向華北落葉松亮“紅牌”[N];中國(guó)經(jīng)濟(jì)導(dǎo)報(bào);2008年

3 記者 王立忠;今秋起我市禁用華北落葉松苗造林[N];鐵嶺日?qǐng)?bào);2008年

4 記者 孟祥山;遼寧禁止用華北落葉松苗造林[N];消費(fèi)日?qǐng)?bào);2008年

5 記者 任鵬飛;不成林難成材 遼寧禁用華北落葉松造林[N];新華每日電訊;2008年

6 首席記者 倪穎　實(shí)習(xí)生 邴帥;岫巖清理華北落葉松苗木[N];鞍山日?qǐng)?bào)　;2008年

7 特約記者 張清福;遼寧岫巖全面清理華北落葉松苗木[N];中國(guó)花卉報(bào);2009年

8 河北省林業(yè)技術(shù)推廣總站 商立志;華北落葉松造林技術(shù)[N];河北科技報(bào);2009年

9 記者王玉芳;中日合作五臺(tái)山綠化項(xiàng)目扎實(shí)推進(jìn)[N];山西科技報(bào);2011年

相關(guān)博士學(xué)位論文 前5條

1 姚延h

本文編號(hào)：2009611