本文選題：浙江省　切入點(diǎn)：土壤剖面　出處：《浙江農(nóng)林大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：本文利用浙江省土系調(diào)查的145個(gè)剖面數(shù)據(jù)研究土壤有機(jī)碳的剖面分布特性。根據(jù)土壤系統(tǒng)分類,首先從土綱、亞綱、土類三個(gè)層面研究土壤有機(jī)碳與土壤深度之間的相關(guān)關(guān)系,獲得一系列土壤有機(jī)碳隨剖面深度分布的數(shù)學(xué)模型。然后以水耕人為土為例,利用土壤有機(jī)碳的剖面分布模型,采用改進(jìn)的土壤類型法計(jì)算土壤有機(jī)碳的密度,并與其他學(xué)者的研究結(jié)果進(jìn)行比較。研究表明大多數(shù)土壤類型的有機(jī)碳含量與深度呈現(xiàn)負(fù)相關(guān)關(guān)系。其中在土綱和亞綱層面,土壤有機(jī)碳含量和土壤深度之間可以用冪函數(shù)很好描述,如人為土有機(jī)碳與剖面深度之間關(guān)系為y=63.665t-0.61,R2=0.4244(n=254);淋溶土為y=51.028t-0.637,R2=0.5286(n=80);雛形土為y=35.093t-0.49,R2=0.3455(n=176)。在土類這一層面上,土壤有機(jī)碳含量與土壤深度的負(fù)相關(guān)關(guān)系更加明顯,最佳擬合曲線方程有冪函數(shù)、指數(shù)函數(shù)、對(duì)數(shù)函數(shù)和二次函數(shù),擬合精度較高。為驗(yàn)證本文所建立的土壤剖面有機(jī)碳分布模型的實(shí)用性和可行性,以浙江省面積大且有代表性的水耕人為土為例,根據(jù)本文建立的土壤有機(jī)碳剖面分布模型進(jìn)行有機(jī)碳密度的估算,1 m土層水耕人為土的土壤有機(jī)碳密度范圍為69.04~101.90 t·hm-2,平均值為85.47 t·hm-2,與通過土類計(jì)算的結(jié)果接近,同時(shí)也與其它研究者的結(jié)果接近,說明本方法的可行性。采用土壤有機(jī)碳剖面分布模型及改進(jìn)的土壤類型法對(duì)土壤有機(jī)碳密度和儲(chǔ)量計(jì)算能達(dá)到較好的效果,據(jù)此可以快速的計(jì)算出各種類型的土壤有機(jī)碳儲(chǔ)量,這不失為一種估算土壤有機(jī)碳儲(chǔ)量的新方法。
[Abstract]:In this paper, the distribution characteristics of soil organic carbon (SOC) profile were studied by means of 145 profiles of soil series survey in Zhejiang Province. According to soil system classification, the correlation between soil organic carbon and soil depth was studied from three aspects of soil order, subclass and soil type. A series of mathematical models for the distribution of soil organic carbon with the depth of soil profile were obtained, and the density of soil organic carbon was calculated by using the improved soil type method. The results are compared with those of other scholars. The results show that the organic carbon content of most soil types is negatively correlated with the depth of soil, especially at the soil and subclass levels. The relationship between soil organic carbon content and soil depth can be well described by power function. For example, the relationship between soil organic carbon and profile depth is yt63.665t-0.61n ~ (2) N ~ (2 +) ~ (0.4244N); the leaching soil is y ~ (51.028) -0.637 ~ (2) C ~ (2 +) 0.5286n800; and the prototype soil is y ~ (35. 093t) ~ (0.49) -0.3455N ~ (176N). The negative correlation between soil organic carbon content and soil depth is more obvious. The best fitting curve equation has power function, exponential function, logarithmic function and quadratic function. In order to verify the practicability and feasibility of the soil profile organic carbon distribution model established in this paper, the large area and representative soil of Zhejiang Province is taken as an example. According to the soil organic carbon profile distribution model established in this paper, the soil organic carbon density is estimated in the soil organic carbon density of soil organic carbon density in the soil layer of 1 m soil layer, the range of soil organic carbon density is 69.04 ~ 101.90 t 路hm ~ (-2), the average value is 85.47 t 路hm ~ (-2), which is close to the result calculated by soil type. At the same time, the results are close to those of other researchers, which shows the feasibility of this method. Using the soil organic carbon profile distribution model and the improved soil type method, the calculation of soil organic carbon density and reserves can achieve better results. Based on this, various types of soil organic carbon reserves can be calculated quickly, which is a new method for estimating soil organic carbon reserves.
【學(xué)位授予單位】：浙江農(nóng)林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：S153.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 楊安廣;苗正紅;邱發(fā)富;楊清臣;王宗明;毛德華;;基于GIS的三江平原表層土壤有機(jī)碳儲(chǔ)量估算及空間分布研究[J];水土保持通報(bào);2015年02期

2 劉苗;劉國華;;土壤有機(jī)碳儲(chǔ)量估算的影響因素和不確定性[J];生態(tài)環(huán)境學(xué)報(bào);2014年07期

3 黃玉麟;郭治興;吳志峰;柴敏;;土壤有機(jī)碳儲(chǔ)量估算結(jié)果精度分析——以廣東省為例[J];中國農(nóng)學(xué)通報(bào);2014年17期

4 上官魁星;吳金水;周腳根;朱捍華;;縣域尺度土壤有機(jī)碳儲(chǔ)量估算的樣點(diǎn)密度優(yōu)化[J];土壤學(xué)報(bào);2014年01期

5 王曉旭;麻萬諸;章明奎;;浙江省典型土壤的發(fā)生學(xué)性質(zhì)與系統(tǒng)分類研究[J];土壤通報(bào);2013年05期

6 周銀;吳宏海;梁建設(shè);史舟;;浙江省水稻土有機(jī)碳儲(chǔ)量估算和密度比較研究[J];土壤通報(bào);2013年04期

7 張甘霖;王秋兵;張鳳榮;吳克寧;蔡崇法;章明奎;李德成;趙玉國;楊金玲;;中國土壤系統(tǒng)分類土族和土系劃分標(biāo)準(zhǔn)[J];土壤學(xué)報(bào);2013年04期

8 劉進(jìn)來;馬樹恩;劉玲;;森林土壤有機(jī)碳儲(chǔ)量及時(shí)空格局研究現(xiàn)狀[J];河北林業(yè)科技;2013年03期

9 葉玲燕;傅偉軍;姜培坤;李永夫;張國江;杜群;;浙江省森林表層土壤基本化學(xué)性質(zhì)和有機(jī)碳儲(chǔ)量的空間變異[J];浙江農(nóng)林大學(xué)學(xué)報(bào);2012年06期

10 朱耀軍;郭菊蘭;武高潔;;紅樹林濕地有機(jī)碳研究進(jìn)展[J];生態(tài)學(xué)雜志;2012年10期

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