本文選題：LIBS技術(shù) + 小流域��； 參考：《內(nèi)蒙古師范大學(xué)》2017年碩士論文

【摘要】：LIBS技術(shù)即激光誘導(dǎo)擊穿技術(shù)是近些年來廣泛運(yùn)用的新型技術(shù),它具有檢測速度快,前期處理簡單且對(duì)樣品微損甚至無損,多元素同時(shí)分析等優(yōu)點(diǎn)。基于此,本文選取希拉穆仁草原的閉合小流域?yàn)檠芯繉?duì)象,分別用LIBS技術(shù)與傳統(tǒng)實(shí)驗(yàn)室方法對(duì)所取土壤樣品的磷鉀元素含量進(jìn)行檢測,通過比較結(jié)果驗(yàn)證LIBS技術(shù)結(jié)果的精確性。最后利用LIBS技術(shù)的實(shí)驗(yàn)結(jié)果分析磷鉀元素在小流域的空間分布特征。得出如下結(jié)論:(1)LIBS技術(shù)測出的磷鉀含量與傳統(tǒng)實(shí)驗(yàn)檢測出的結(jié)果相比,實(shí)驗(yàn)數(shù)據(jù)準(zhǔn)確。兩種方法測出的磷鉀含量誤差率很小,基本都在5%以內(nèi),有個(gè)別超出5%,但超出部分很小。通過符號(hào)檢驗(yàn)得出,實(shí)驗(yàn)室數(shù)據(jù)和LIBS技術(shù)測出的磷鉀含量無顯著差異,根據(jù)方差分析得到p0.05,呈顯著相關(guān),說明傳統(tǒng)實(shí)驗(yàn)數(shù)據(jù)與LIBS技術(shù)的含量無差異,結(jié)果準(zhǔn)確。(2)研究區(qū)的植被分布特征為在基地內(nèi)、牧民圍封區(qū)和徑流“滯留”地帶,植被的生長狀況要好,在放牧條件和旅游區(qū)等受人為干擾大的地區(qū),植被的生長狀況差。(3)磷元素在小流域的分布特征表現(xiàn)為在植被蓋度高、地上生物量大和植被高度高的的區(qū)域磷元素的含量要高,還有在徑流“滯留”地帶,水分條件較好的地方磷元素含量高,最后在牲畜集中駐留的地方磷元素含量比較高。(4)鉀元素在小流域的分布特征與磷元素有一定的相似性,在植被生長狀況較好的區(qū)域鉀元素產(chǎn)生富集現(xiàn)象,在天然形成的洼地,水分條件較好的區(qū)域鉀元素的含量也比較高,還有在牲畜比較集中、停留時(shí)間較長的區(qū)域鉀元素含量高,最后有母質(zhì)鉀長石出露的地區(qū),鉀元素富集。
[Abstract]:Laser induced breakdown (LIBS) technology is a new technique widely used in recent years. It has the advantages of high detection speed, simple pre-processing, even non-destructive to samples, and multi-element simultaneous analysis. Based on this, the closed watershed of Xilamuren grassland was selected as the research object, the content of phosphorus and potassium in soil samples was detected by LIBS technique and traditional laboratory method, and the accuracy of the results of LIBS technique was verified by comparing the results. Finally, the spatial distribution characteristics of phosphorus and potassium in small watershed were analyzed by using the experimental results of LIBS technique. It is concluded that the phosphorus and potassium content measured by the LIBS technique is more accurate than that of the traditional experiment. The error rate of phosphorus and potassium content measured by the two methods is very small, basically less than 5%, and some of them exceed 5%, but the excess part is very small. The results of symbol test showed that there was no significant difference in phosphorus and potassium content between laboratory data and LIBS technique, but there was a significant correlation between the two methods according to variance analysis, which indicated that there was no difference between traditional experimental data and LIBS technique. The results showed that the vegetation distribution characteristics of the study area were: in the base, herdsman enclosure area and runoff "detention" zone, the vegetation growth condition should be good, and in the areas where grazing conditions and tourist areas were seriously disturbed by human beings, The distribution of phosphorus in small watershed is characterized by high vegetation coverage, high aboveground biomass and high vegetation height, and high phosphorus content in runoff "retention" zone. The distribution of potassium in the small watershed is similar to that of phosphorus in the small watershed, and the content of phosphorus is higher in the area where livestock live in the area where the water content is better, and the distribution of potassium in the small watershed is similar to that of phosphorus, and the distribution of potassium in the small watershed is similar to that of phosphorus. In areas where vegetation growth is better, potassium is enriched. In naturally formed depressions, the content of potassium is also relatively high in areas with better water conditions, as well as in areas where livestock is relatively concentrated and where the duration of residence is longer. Finally, potassium is enriched in areas where the parent potassium feldspar is exposed.
【學(xué)位授予單位】：內(nèi)蒙古師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：S812

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王智化;許東相;何勇;萬凱迪;朱燕群;岑可法;;溫度對(duì)準(zhǔn)東煤裂解特性及堿金屬釋放影響的試驗(yàn)研究[J];中國電機(jī)工程學(xué)報(bào);2015年S1期

2 楊慧;涂春艷;李青芳;楊利超;曹建華;;巖溶區(qū)次生林地不同地貌部位土壤C、N、P化學(xué)計(jì)量特征[J];南方農(nóng)業(yè)學(xué)報(bào);2015年05期

3 余克強(qiáng);何勇;劉飛;;基于激光誘導(dǎo)擊穿光譜的土壤類型判別分析[J];農(nóng)業(yè)工程學(xué)報(bào);2015年12期

4 鄧奔;王杰;姜培培;吳波;沈永行;;高峰值功率微片激光器及其在LIBS中的應(yīng)用[J];中國激光;2014年11期

5 郭新送;宋付朋;高楊;馬富亮;;模擬降雨下3種類型土壤坡面的泥沙流失特征及其養(yǎng)分富集效應(yīng)[J];水土保持學(xué)報(bào);2014年03期

6 沈躍良;姚順春;潘剛;徐齊勝;李旭;樊炬;徐少波;陸盛資;李壯揚(yáng);陸繼東;;粘合劑對(duì)激光誘導(dǎo)擊穿光譜技術(shù)測量粉煤灰未燃碳的影響[J];中國激光;2014年03期

7 張大成;馬新文;趙冬梅;張穎;;藥用膠囊中鉻元素的LIBS快速檢測[J];藥物分析雜志;2013年12期

8 鄧歐平;周稀;黃萍萍;鄧良基;;川中紫色丘區(qū)土壤養(yǎng)分空間分異與地形因子相關(guān)性研究[J];資源科學(xué);2013年12期

9 徐媛;姚明印;劉木華;;激光誘導(dǎo)擊穿光譜檢測牛奶中的Na元素[J];光電子.激光;2013年05期

10 董大明;鄭文剛;趙春江;趙賢德;矯雷子;張石銳;;農(nóng)田土壤中鉀元素含量的激光誘導(dǎo)擊穿光譜測量方法[J];光譜學(xué)與光譜分析;2013年03期

，

本文編號(hào)：1782134