本文選題：土地利用 + 土壤質(zhì)量�。� 參考：《內(nèi)蒙古農(nóng)業(yè)大學》2015年碩士論文

【摘要】：內(nèi)蒙古鄂爾多斯市地域廣闊,資源豐富,土地利用方式多樣,具有典型的能源開發(fā)區(qū)和傳統(tǒng)農(nóng)耕區(qū)。本文對鄂爾多斯市能源開發(fā)重點區(qū)的伊金霍洛旗和達拉特旗2012年-2014年土壤質(zhì)量野外監(jiān)測數(shù)據(jù)進行系統(tǒng)分析,探討不同土地利用方式下土壤養(yǎng)分狀況和土壤質(zhì)量變化情況。1、兩個旗縣2012年土壤質(zhì)量指標顯示：土壤有機質(zhì)、土壤全氮量、土壤全磷量在0-30cm均呈現(xiàn)隨土壤剖面深度增加含量逐步降低的趨勢,土壤全鉀量在0-30cm呈現(xiàn)隨土壤剖面深度增加保持相對穩(wěn)定的趨勢；土壤含鹽量均值為0.19-0.36g/kg, PH值在8.57-9.26,整體呈現(xiàn)弱堿性。2、土壤有機質(zhì)、土壤全氮量、土壤全磷量在不同土地利用方式下差異顯著(p0.05),土壤全鉀量在不同土地利用方式下差異不顯著(p0.05)；兩個旗縣土壤有機質(zhì)含量、全氮含量、全磷含量均表現(xiàn)為“稍缺”“缺”“極缺”的水平,全鉀含量均處于“稍豐”的水平。3、2012年伊金霍洛旗各土地利用方式間,土壤有機質(zhì)、全氮、全鉀、含鹽量指標的變異系數(shù)在天然牧草地利用方式下最大,在水澆耕地、旱作耕地利用方式下變異系數(shù)較�。�2013、2014年水澆耕地和早作耕地的有機質(zhì)、全效氮磷鉀含量均有穩(wěn)步升高的趨勢,其它各種土地利用方式下土壤質(zhì)量指標差距較小；2012年達拉特旗水澆耕地的各項土壤質(zhì)量指標的變異系數(shù)均大于天然牧草地；2013、2014年水澆耕地土壤養(yǎng)分含量有一定提高,土壤質(zhì)量各指標的變異系數(shù)以pH的變異系數(shù)最小。
[Abstract]:Erdos city in Inner Mongolia has a vast area, rich resources and various land use modes. It has typical energy development zones and traditional farming areas. In this paper, the field monitoring data of soil quality in the key areas of energy development in Erdos from 2012 to 2014 are systematically analyzed. The soil nutrient status and soil quality change under different land use patterns were discussed. The soil quality indexes of two flag counties in 2012 showed that: soil organic matter, soil total nitrogen content, Soil total phosphorus content decreased gradually with the increase of soil profile depth in 0-30cm, and soil total potassium content in 0-30cm showed a relatively stable trend with the increase of soil profile depth. The average value of soil salt content was 0.19-0.36 g / kg, the PH value was 8.57-9.26, the soil organic matter, soil total nitrogen and total phosphorus content were significantly different under different land use patterns, but the total potassium content was not significantly different under different land use patterns. Soil organic matter content, total nitrogen content and total phosphorus content in the two counties were all at the level of "slightly deficient" and "extremely deficient", and the total potassium content was at the level of "slightly abundant". In 2012, the soil organic matter was found among the different land use patterns in Yijinhuoluo Banner. The coefficient of variation of total nitrogen, total potassium and salt content was the highest in the natural pasture land use mode, and the coefficient of variation was smaller in irrigated cultivated land and dry cultivated land in 2013.The organic matter of water-irrigated cultivated land and early cultivated land in 2014 was lower than that of dry cultivated land. The content of total nitrogen, phosphorus and potassium increased steadily, and the difference of soil quality index was small under other land use methods, and the coefficient of variation of soil quality indexes in 2012 was higher than that in natural forage land. In 2013, the soil nutrient content of irrigated cultivated land increased to some extent in 2014, and the coefficient of variation of soil quality was the least in pH.
【學位授予單位】：內(nèi)蒙古農(nóng)業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：S159.2

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