本文選題：氣候變化 + 克氏針茅草原　； 參考：《內蒙古大學》2017年碩士論文

【摘要】：隨著全球氣候變暖的日益加劇,溫度升高和降水格局的變化已毋庸置疑。內蒙古克氏針茅草原地處干旱半干旱地區(qū),對氣候環(huán)境的變化響應敏感,研究內蒙古典型草原對氣候變化的響應有助于確定未來氣候變化下草原生態(tài)系統(tǒng)的適應方式。本文以內蒙古克氏針茅草原為研究對象,在2011年生長季利用開頂式生長室(OTC)對其進行增溫增雨試驗,探討草地微生物和土壤酶活性對氣候變化的響應機理,以期為未來氣候變化提供基礎數據和理論依據。主要包括以下結論:(1)增溫處理顯著增加了土壤溫度,降低了土壤濕度;增雨處理顯著增加土壤濕度而降低了土壤溫度。增溫、增雨及交互作用對土壤pH、有機質、全氮、銨態(tài)氮、全磷、速效磷的含量沒有顯著影響,T和TP處理顯著增加硝態(tài)氮的含量。(2)CT(控溫處理)、T(增溫處理)、P(增雨處理)和TP(增溫增雨處理)處理后,過氧化氫酶活性均有一定程度的增加,但是與CK處理未達到顯著性水平。CT、P和TP處理的脲酶活性顯著提高,而T處理無明顯的變化。CT、T、P和TP處理的堿性磷酸酶活性均有下降的趨勢,CT處理的酶活性顯著下降。CT、T、P和TP處理后的蔗糖酶活性有不同程度的波動,但與CK處理均未形成顯著性差異。(3)生長季和實驗處理對土壤細菌和真菌的多樣性一定影響,但是影響均不顯著。群落相似性分析表明增溫和增溫及交互作用在一定程度上改變了土壤微生物群落的結構。(4)不同土壤酶活性受到土壤理化指標的影響不同。不同土壤理化指標對土壤微生物多樣性的影響不同。微生物多樣性和酶活性的關系沒有規(guī)律性。(5)增溫、增雨及交互作用影響土壤微生物多樣性與土壤溫濕度之間的關系,并未表現出特異性規(guī)律。
[Abstract]:With the increasing global warming, there is no doubt that temperature rise and precipitation pattern change. Neopodium krjabini is located in arid and semi-arid area, and is sensitive to the change of climate environment. The study of the response of typical grassland to climate change in Inner Mongolia is helpful to determine the adaptation of grassland ecosystem under future climate change. In this paper, the experiment of warming and increasing rain was carried out by using OTC in the growth season of Inner Mongolia, and the response mechanism of microorganism and soil enzyme activity to climate change was discussed. In order to provide basic data and theoretical basis for future climate change. The main conclusions are as follows: (1) the increase of temperature significantly increased the soil temperature, decreased the soil moisture, and increased the soil moisture significantly and decreased the soil temperature under the rain treatment. Soil pH, organic matter, total nitrogen, ammonium nitrogen, total phosphorus, The content of available phosphorus had no significant effect on the content of nitrate-N. The activity of catalase increased to a certain extent after the treatments of temperature control treatment (temperature control treatment) and TP (temperature treatment) and TP( treatment) increased the content of nitrate-N, and the activity of catalase increased to a certain extent after the treatments of temperature control treatment (temperature control treatment) and TP treatment (temperature control treatment) and TPtreatment (temperature and precipitation treatment), respectively. However, the urease activity of the treatments with CK and CK did not reach the significant level. The activity of alkaline phosphatase (ALP) decreased in both CTT and TP treatments. The enzyme activity of CT treatment decreased significantly. The sucrase activity fluctuated in different degrees after treatment with CTT and TP. However, there was no significant difference between the treatments and CK treatments. The growth season and experimental treatment had a certain effect on the diversity of soil bacteria and fungi, but the effects were not significant. Community similarity analysis showed that warming, warming and interaction changed the structure of soil microbial community to a certain extent) different soil enzyme activities were affected by soil physical and chemical indexes. Different soil physical and chemical indexes have different effects on soil microbial diversity. The relationship between microbial diversity and enzyme activity was not regular.
【學位授予單位】：內蒙古大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：S812.2

【參考文獻】

相關期刊論文 前10條

1 劉捷豹;陳光水;郭劍芬;楊智杰;李一清;林成芳;楊玉盛;;森林土壤酶對環(huán)境變化的響應研究進展[J];生態(tài)學報;2017年01期

2 陳曉麗;王根緒;楊燕;楊陽;;山地森林表層土壤酶活性對短期增溫及凋落物分解的響應[J];生態(tài)學報;2015年21期

3 權國玲;尚占環(huán);;中國草地生態(tài)系統(tǒng)模擬增溫實驗的綜合比較[J];生態(tài)學雜志;2015年04期

4 保婭;達哇卓瑪;;不同海拔高度溫、濕度對土壤養(yǎng)分的影響[J];青海草業(yè);2014年04期

5 馮棣;張俊鵬;孫池濤;劉曉菲;黨紅凱;曹彩云;鄭春蓮;孫景生;李科江;馬俊永;;長期咸水灌溉對土壤理化性質和土壤酶活性的影響[J];水土保持學報;2014年03期

6 秦大河;Thomas Stocker;;IPCC第五次評估報告第一工作組報告的亮點結論[J];氣候變化研究進展;2014年01期

7 王學娟;周玉梅;王秀秀;江肖潔;韓士杰;;長白山苔原生態(tài)系統(tǒng)土壤酶活性及微生物生物量對增溫的響應[J];土壤學報;2014年01期

8 張菊;康榮華;趙斌;黃永梅;葉芝祥;段雷;;內蒙古溫帶草原氮沉降的觀測研究[J];環(huán)境科學;2013年09期

9 張昊;張利蘭;王佳;朱孔方;王洪濤;楊清香;;土霉素暴露對小麥根際抗生素抗性細菌及土壤酶活性的影響[J];生態(tài)學報;2012年02期

10 劉琳;朱霞;孫庚;羅鵬;王蓓;;模擬增溫與施肥對高寒草甸土壤酶活性的影響[J];草業(yè)科學;2011年08期

相關博士學位論文 前2條

1 于成德;中國北方半干旱草原土壤微生物對全球變化的響應[D];河南大學;2016年

2 金裕華;武夷山不同海拔土壤微生物多樣性的變化特征[D];南京林業(yè)大學;2012年

相關碩士學位論文 前2條

1 劉珊珊;基于宏基因學的農田土壤微生物響應氣候變化的機理解析[D];清華大學;2014年

2 盛文萍;氣候變化對內蒙古草地生態(tài)系統(tǒng)影響的模擬研究[D];中國農業(yè)科學院;2007年

，

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