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  本文關(guān)鍵詞：秦嶺林區(qū)華山松林與云杉林土壤碳密度特征　出處：《西北農(nóng)林科技大學》2016年碩士論文　論文類型：學位論文

  更多相關(guān)文章： 華山松 云杉林 有機碳密度 海拔 坡向 坡位

【摘要】：秦嶺地區(qū)是中國的一個重要組成部分,其環(huán)境問題與人們息息相關(guān)。隨著經(jīng)濟的不斷發(fā)展,其環(huán)境問題日益嚴重,解決水土流失等問題已經(jīng)刻不容緩,因此,對該區(qū)的土壤的研究非常重要。通過對秦嶺林區(qū)華山松與云杉林不同地區(qū)土壤各層有機碳密度的測定,包括寧東、寧西、龍草坪和太白,采用室外采樣和室內(nèi)分析的方法,可以得出,在秦嶺林區(qū)華山松與云杉林不同區(qū)域土壤有機碳密度存在一定的差異。結(jié)果表明:(1)就整體而言,華山松林的土壤有機碳密度為132.2 t/hm2,云杉林的土壤有機碳密度為157.8 t/hm2�？梢钥闯�,華山松林的土壤有機碳密度是小于云杉林土壤有機碳密度的。(2)隨著海拔的升高,華山松和云杉林土壤有機碳密度呈逐漸增大的趨勢。(3)隨著土層的加深,土壤有機碳密度逐漸減小。(4)土壤A層、B層、C層和整體的有機碳密度均是陰坡陽坡。無論是陰坡還是陽坡,云杉的土壤碳密度大于華山松的碳密度。(5)坡位對兩者的影響大概是相同的,都是下坡位土壤有機碳密度中坡位土壤有機碳密度上坡位土壤有機碳密度,在相同坡位時,云杉林土壤有機碳密度大于華山松土壤有機碳密度。針對以上結(jié)果,我們應(yīng)該提高保護環(huán)境的意識,合理利用林地,促進當?shù)氐慕?jīng)濟發(fā)展。
[Abstract]:Qinling region is an important part of China, its environmental problems are closely related to people. With the development of economy, its environmental problems become more and more serious, so it is urgent to solve the problems of soil and water loss. It is very important to study the soil in this area. Through the determination of soil organic carbon density in different areas of Pinus huashanensis and Picea lanceolata in Qinling forest area, including Ningdong, Ningxi, Dragon Lawn and Taibai. By means of outdoor sampling and indoor analysis, it can be concluded that there are some differences in soil organic carbon density between Pinus huashanensis and Picea lanceolata in Qinling forest area. The soil organic carbon density of Pinus armandii forest was 132.2 t / hm ~ (2), and that of Picea lanceolata forest was 157.8 t / hm ~ (2). The soil organic carbon density of Pinus armandii forest is smaller than that of Picea lanceolata forest. Soil organic carbon density of Pinus huashanensis and Picea chinensis forest increased gradually with the deepening of soil layer, soil organic carbon density decreased gradually. C layer and the whole organic carbon density are both shady slope and sunny slope. The soil carbon density of spruce is larger than that of Pinus armandii. The soil organic carbon density in the downhill position is middle slope soil organic carbon density. In the same slope position, the soil organic carbon density of the Picea lanceolata forest is higher than that of the Pinus huashanensis soil organic carbon density. We should improve the awareness of environmental protection, rational use of woodland, and promote local economic development.
【學位授予單位】：西北農(nóng)林科技大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：S714.2

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