復(fù)墾村莊土壤肥力評價研究
發(fā)布時間：2019-04-19 23:35
【摘要】：土壤是實現(xiàn)農(nóng)業(yè)可持續(xù)發(fā)展與陸地生態(tài)系統(tǒng)良性循環(huán)的物質(zhì)基礎(chǔ),土壤肥力是土壤各種性質(zhì)的綜合表現(xiàn),反映了土壤為植物提供適宜生長環(huán)境的能力。我國黃土高原產(chǎn)煤區(qū)煤炭開采導(dǎo)致大量的村莊需要搬遷整治,研究村莊復(fù)墾過程中土壤肥力的變化狀況能夠有效地判斷復(fù)墾措施的科學(xué)性與合理性,對于復(fù)墾后耕地土壤肥力改良與質(zhì)量提升提供一定的依據(jù)。為此,本文以山西省澤州縣西郜村為研究區(qū)域,以土壤肥力相關(guān)理論為基礎(chǔ),對村莊復(fù)墾的土壤肥力改良效果進行了研究。本文的研究內(nèi)容包括以下幾個方面:(1)對國內(nèi)外有關(guān)土壤肥力的研究進行綜述性介紹與回顧,探討不同研究內(nèi)容與技術(shù)方法,明晰本文研究的起點;(2)在分析研究區(qū)概況的基礎(chǔ)上并結(jié)合相關(guān)研究,構(gòu)建了復(fù)墾村莊土壤肥力評價指標(biāo)體系,并引入粗糙集理論來確定指標(biāo)權(quán)重;(3)對影響土壤肥力改良效果的關(guān)鍵因素進行了分析與模擬調(diào)控;(4)為后續(xù)土壤肥力進一步改良提出了建議措施。通過對以上內(nèi)容的研究,得出以下結(jié)論:(1)復(fù)墾過程對土壤肥力改良效果顯著,復(fù)墾后土壤肥力狀況趨于均勻且有了明顯提升;(2)物理因子中的關(guān)鍵因素對土壤肥力改良效果的影響最為顯著,符合研究對象的自身特點;(3)構(gòu)建的土壤肥力效果評價指標(biāo)體系具有一定的改進意義,能夠較為客觀地反映村莊在復(fù)墾過程中的土壤肥力的變化特征;(4)將粗糙集理論引入到土壤肥力評價指標(biāo)權(quán)重確定的過程中,使得結(jié)果更加客觀合理。本文的創(chuàng)新點是構(gòu)建了復(fù)墾村莊土壤肥力評價指標(biāo)體系,將粗糙集理論引入到評價過程中,對復(fù)墾村莊的土壤肥力狀況進行了合理評價,能夠為后續(xù)的相關(guān)研究提供一種有益的思路。
[Abstract]:Soil is the material basis for realizing sustainable development of agriculture and benign circulation of terrestrial ecosystem. Soil fertility is the comprehensive performance of various properties of soil, which reflects the ability of soil to provide suitable growth environment for plants. Coal mining in the coal-producing areas of the Loess Plateau in China results in a large number of villages that need to be relocated and renovated. The study of the changes of soil fertility in the process of reclamation in villages can effectively judge the scientific and rational measures of reclamation. It provides a certain basis for soil fertility improvement and quality improvement after reclamation. Therefore, based on the theory of soil fertility and the study area of Xigao Village, Zezhou County, Shanxi Province, the effect of soil fertility improvement of village reclamation was studied in this paper. The research contents of this paper include the following aspects: (1) introduce and review the research on soil fertility at home and abroad, discuss different research contents and technical methods, and clarify the starting point of this study; (2) on the basis of analyzing the general situation of the study area and combining with the related research, the evaluation index system of soil fertility in reclaimed villages was constructed, and rough set theory was introduced to determine the index weight; (3) the key factors affecting the effect of soil fertility improvement were analyzed and simulated. (4) suggestions for further improvement of soil fertility were put forward. Through the study of the above contents, the following conclusions are drawn: (1) the reclamation process has a remarkable effect on soil fertility improvement, and after reclamation, the soil fertility status tends to be uniform and has been significantly improved; (2) the key factors of physical factors have the most significant effect on soil fertility improvement, which accords with the characteristics of the research object; (3) the evaluation index system of soil fertility effect has a certain improvement significance, which can objectively reflect the change characteristics of soil fertility in the process of reclamation in villages; (4) the rough set theory is introduced into the process of determining the weight of soil fertility evaluation index, which makes the result more objective and reasonable. The innovation of this paper is to construct the evaluation index system of soil fertility in reclaimed villages. The rough set theory is introduced into the evaluation process, and the soil fertility status of reclaimed villages is evaluated reasonably. It can provide a useful train of thought for the follow-up related research.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：S158
本文編號：2461396
[Abstract]:Soil is the material basis for realizing sustainable development of agriculture and benign circulation of terrestrial ecosystem. Soil fertility is the comprehensive performance of various properties of soil, which reflects the ability of soil to provide suitable growth environment for plants. Coal mining in the coal-producing areas of the Loess Plateau in China results in a large number of villages that need to be relocated and renovated. The study of the changes of soil fertility in the process of reclamation in villages can effectively judge the scientific and rational measures of reclamation. It provides a certain basis for soil fertility improvement and quality improvement after reclamation. Therefore, based on the theory of soil fertility and the study area of Xigao Village, Zezhou County, Shanxi Province, the effect of soil fertility improvement of village reclamation was studied in this paper. The research contents of this paper include the following aspects: (1) introduce and review the research on soil fertility at home and abroad, discuss different research contents and technical methods, and clarify the starting point of this study; (2) on the basis of analyzing the general situation of the study area and combining with the related research, the evaluation index system of soil fertility in reclaimed villages was constructed, and rough set theory was introduced to determine the index weight; (3) the key factors affecting the effect of soil fertility improvement were analyzed and simulated. (4) suggestions for further improvement of soil fertility were put forward. Through the study of the above contents, the following conclusions are drawn: (1) the reclamation process has a remarkable effect on soil fertility improvement, and after reclamation, the soil fertility status tends to be uniform and has been significantly improved; (2) the key factors of physical factors have the most significant effect on soil fertility improvement, which accords with the characteristics of the research object; (3) the evaluation index system of soil fertility effect has a certain improvement significance, which can objectively reflect the change characteristics of soil fertility in the process of reclamation in villages; (4) the rough set theory is introduced into the process of determining the weight of soil fertility evaluation index, which makes the result more objective and reasonable. The innovation of this paper is to construct the evaluation index system of soil fertility in reclaimed villages. The rough set theory is introduced into the evaluation process, and the soil fertility status of reclaimed villages is evaluated reasonably. It can provide a useful train of thought for the follow-up related research.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：S158
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