本文選題：溫度　切入點(diǎn)：水分　出處：《吉林農(nóng)業(yè)大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

【摘要】：全球氣候變化已經(jīng)受到了世界各國(guó)的關(guān)注,其引發(fā)的水熱條件改變,將對(duì)土壤有機(jī)質(zhì)的分解造成顯著影響。本試驗(yàn)采用室內(nèi)培養(yǎng)方法,模擬了暖干(土壤含水量較低的情況下升高溫度)和暖濕(土壤含水量較高的情況下升高溫度)兩種氣候條件下,吉林省三種主要耕作土壤(黑土、白漿土、黑鈣土)有機(jī)質(zhì)含量及活性有機(jī)碳組分含量(可溶性有機(jī)碳、微生物量碳、易氧化有機(jī)碳)的變化規(guī)律,從而為適應(yīng)氣候變化的土壤培肥技術(shù)提供理論基礎(chǔ)。研究結(jié)果如下:1.在模擬的暖干和暖濕兩種模式下,土壤總有機(jī)碳含量的變化趨勢(shì)不同。在暖干模式下,黑土和白漿土的總有機(jī)碳含量在4個(gè)設(shè)定溫度條件下的變化趨勢(shì)為:-10℃30℃20℃10℃;黑鈣土則是-10℃30℃10℃20℃。溫度與黑土有機(jī)碳呈顯著負(fù)相關(guān)關(guān)系,溫度與白漿土和黑鈣土有機(jī)碳沒(méi)有相關(guān)關(guān)系。在暖濕模式下,3種土壤總有機(jī)碳量逐漸減小,溫度與黑土、白漿土和黑鈣土的總有機(jī)碳之間呈極顯著負(fù)相關(guān)關(guān)系。3種土壤在同一溫度梯度,不同水分處理之間,低水分處理總有機(jī)碳含量大于高水分處理。2.在模擬的暖干和暖濕兩種模式下,土壤有機(jī)碳礦化率表現(xiàn)出不同的變化規(guī)律。在暖干模式下,黑土和白漿土的有機(jī)碳礦化率在4個(gè)設(shè)定溫度條件下的變化趨勢(shì)為:10℃20℃30℃-10℃,黑鈣土則是20℃10℃30℃-10℃。3種土壤之間有機(jī)碳礦化率表現(xiàn)為黑土黑鈣土白漿土。在暖濕模式下,3種土壤的有機(jī)碳礦化率逐漸下降,即30℃20℃10℃-10℃。研究結(jié)果還表明,同樣是在30℃培養(yǎng)150d的條件下,土壤含水量由7.5%-9.5%提高到15%-19%,土壤有機(jī)碳的礦化損失量即可由5.2%-10%提升到13.7%-14%。3.在模擬的暖干和暖濕兩種模式下,土壤活性有機(jī)碳含量的變化趨勢(shì)不同。在暖干模式下,黑土的易氧化有機(jī)碳含量在4個(gè)設(shè)定溫度條件下的變化趨勢(shì)為:-10℃30℃20℃10℃;白漿土和黑鈣土則是-10℃30℃10℃20℃。溫度與黑土和白漿土易氧化有機(jī)碳呈顯著負(fù)相關(guān)關(guān)系,溫度與黑鈣土易氧化有機(jī)碳沒(méi)有相關(guān)關(guān)系。3種土壤的微生物量碳含量在4個(gè)設(shè)定溫度條件下的變化趨勢(shì)為:-10℃30℃20℃10℃。溫度與黑土和黑鈣土微生物量碳呈顯著負(fù)相關(guān)關(guān)系,溫度與白漿土微生物量碳沒(méi)有相關(guān)關(guān)系。3種土壤的可溶性有機(jī)碳含量在4個(gè)設(shè)定溫度條件下的變化趨勢(shì)為:-10℃30℃20℃10℃。溫度與黑土可溶性有機(jī)碳之間呈極顯著負(fù)相關(guān)關(guān)系,溫度與白漿土和黑鈣土可溶性有機(jī)碳之間沒(méi)有相關(guān)關(guān)系。在暖濕模式下,3種土壤的活性有機(jī)碳含量逐漸減小,溫度與黑土、白漿土和黑鈣土的活性有機(jī)碳之間均呈極顯著負(fù)相關(guān)關(guān)系。4.在模擬的暖干和暖濕兩種模式下,土壤活性有機(jī)碳與總有機(jī)碳的比值均下降,但是暖濕條件下降明顯�？傆袡C(jī)碳與活性有機(jī)碳組分之間均呈極顯著相關(guān)關(guān)系,活性有機(jī)碳組分可以被當(dāng)作溫度對(duì)土壤有機(jī)質(zhì)含量影響的早期指標(biāo)。
[Abstract]:Global climate change has been the world's attention, which led to the change of water and heat conditions, the decomposition of soil organic matter has a significant impact. In this experiment, the indoor culture method to simulate the warm dry (soil moisture under the condition of low temperature) and warm (soil moisture under the condition of higher. Temperature) two different climatic conditions, three kinds of main cultivated soil in Jilin province (black soil, albic soil, chernozem) the content of organic matter and active organic carbon fractions (soluble organic carbon, microbial biomass carbon, easily oxidized organic carbon) variation, thus providing a theoretical basis for soil fertilization technology to adapt to climate change. The results are as follows: 1. in the simulation of warm dry and warm wet two modes, different trends of total organic carbon content of the soil. In warm dry mode, black and white slurry soil total organic carbon content in the 4 set temperature conditions The trend is: -10 C 30 C 20 C 10 C; C 30 C -10 chernozem is 10 degrees 20 degrees Celsius. The temperature was significantly and negatively correlated with soil organic carbon, temperature had no correlation with soil organic carbon and chernozem white pulp. In wet mode, 3 kinds of soil total organic carbon decreased gradually the temperature, and between the total organic carbon black, Albic Soil and chernozem was negatively related to.3 in the same kind of soil temperature gradient between different water treatments, low water treatment total organic carbon content is higher than that of the high water treatment of.2. in the simulation of warm dry and warm wet two modes, soil organic carbon mineralization the rate showed a different variation. In warm dry mode, the change trend of organic carbon mineralization in black and white slurry soil at the rate of 4 set temperature: 10 degrees centigrade 20 degrees 30 DEG -10 DEG, chernozem organic carbon mineralization is between 20 DEG C and 10 C 30 DEG -10 DEG.3 for the rate of soil show Black black soil soil. Calcium in warm mode, 3 kinds of soil organic carbon mineralization rate decreased gradually, which is 30 C 20 C 10 -10 OC. The results also show that the same is the culture condition of 150D at 30 DEG C, soil moisture increased from 7.5%-9.5% to 15%-19%, the loss of soil organic mineralization can be carbon increased from 5.2%-10% to 13.7%-14%.3. in the simulation of the warm dry and warm wet two modes, different trends of soil active organic carbon content. In warm dry mode, change trend in the 4 set temperature under the condition of the soil easily oxidized organic carbon content is: -10 C 30 C 20 C 10 C; white PLANOSOL and chernozem is -10 C 30 C 10 C 20 C. And the temperature of black soil and albic soil is negatively related to the oxidation of organic carbon, temperature and microbial biomass carbon content changes were not related to.3 oxidation of organic carbon in soils in 4 set temperature conditions Trend: -10 C 30 C 20 C 10 C. Temperature showed a significant negative correlation with soil microbial biomass carbon black, trends in the 4 set temperature conditions of soluble organic carbon in Albic soil temperature and microorganism biomass carbon not related to soil.3 is: -10 C 30 C 20 C 10 C. Between temperature and soil soluble organic carbon was negatively related, no correlation between temperature and soil soluble organic carbon and chernozem. In wet mode, 3 kinds of soil active organic carbon content decreases, temperature and soil active organic carbon, between Albic Soil and black soil were there was a significant negative correlation between.4. in the simulation of warm dry and warm wet two modes, the ratio of active soil organic carbon and total organic carbon decreased, but warm conditions decreased significantly. The total organic carbon and labile organic carbon fractions showed extremely significant correlation between The active organic carbon component can be used as an early indicator of the effect of temperature on the content of soil organic matter.

【學(xué)位授予單位】：吉林農(nóng)業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：S153.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 湯緒;楊續(xù)超;田展;Gnter Fischer;潘婕;;氣候變化對(duì)中國(guó)農(nóng)業(yè)氣候資源的影響[J];資源科學(xué);2011年10期

2 汪太明;王業(yè)耀;香寶;胡鈺;;交替凍融對(duì)黑土可溶性有機(jī)質(zhì)熒光特征的影響[J];光譜學(xué)與光譜分析;2011年08期

3 趙俊芳;郭建平;馬玉平;俄有浩;王培娟;鄔定榮;;氣候變化背景下我國(guó)農(nóng)業(yè)熱量資源的變化趨勢(shì)及適應(yīng)對(duì)策[J];應(yīng)用生態(tài)學(xué)報(bào);2010年11期

4 劉彥隨;劉玉;郭麗英;;氣候變化對(duì)中國(guó)農(nóng)業(yè)生產(chǎn)的影響及應(yīng)對(duì)策略[J];中國(guó)生態(tài)農(nóng)業(yè)學(xué)報(bào);2010年04期

5 周曙東;周文魁;朱紅根;王傳星;王艷;;氣候變化對(duì)農(nóng)業(yè)的影響及應(yīng)對(duì)措施[J];南京農(nóng)業(yè)大學(xué)學(xué)報(bào)(社會(huì)科學(xué)版);2010年01期

6 楊桂生;宋長(zhǎng)春;王麗;王麗麗;李英臣;;水位梯度對(duì)小葉章濕地土壤微生物活性的影響[J];環(huán)境科學(xué);2010年02期

7 張劍;汪思龍;王清奎;劉燕新;;不同森林植被下土壤活性有機(jī)碳含量及其季節(jié)變化[J];中國(guó)生態(tài)農(nóng)業(yè)學(xué)報(bào);2009年01期

8 王紅;范志平;鄧東周;陳德龍;孫學(xué)凱;高俊剛;曾德慧;;不同環(huán)境因子對(duì)樟子松人工林土壤有機(jī)碳礦化的影響[J];生態(tài)學(xué)雜志;2008年09期

9 黃靖宇;宋長(zhǎng)春;張金波;郭躍東;廖玉靜;;凋落物輸入對(duì)三江平原棄耕農(nóng)田土壤基礎(chǔ)呼吸和活性碳組分的影響[J];生態(tài)學(xué)報(bào);2008年07期

10 黃黎英;曹建華;周莉;徐祥明;莫彬;張佩;;不同地質(zhì)背景下土壤溶解有機(jī)碳含量的季節(jié)動(dòng)態(tài)及其影響因子[J];生態(tài)環(huán)境;2007年04期

，

本文編號(hào)：1570303