本文選題：基本農(nóng)田　切入點(diǎn)：耕地質(zhì)量　出處：《成都理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：基本農(nóng)田是耕地的精華,如何科學(xué)合理的劃定基本農(nóng)田,解決糧食安全與社會(huì)發(fā)展之間的矛盾是一個(gè)亟待解決的問題。本文在綜合分析基本農(nóng)田的內(nèi)涵與研究區(qū)特定地形地貌因素的基礎(chǔ)上提出耕地自然質(zhì)量和立地條件是基本農(nóng)田劃定的兩項(xiàng)必要條件。在此基礎(chǔ)上構(gòu)建耕地自然質(zhì)量評(píng)價(jià)體系和耕地立地條件評(píng)價(jià)體系,開展耕地自然質(zhì)量評(píng)價(jià)和耕地立地條件評(píng)價(jià),最終構(gòu)建耕地綜合質(zhì)量評(píng)價(jià)體系,并以此劃定基本農(nóng)田。本文以南江縣為例探討適合川東北中低山丘陵區(qū)的基本農(nóng)田劃定方法,取得以下研究成果:(1)南江縣耕地自然質(zhì)量評(píng)價(jià)體系包含坡度、灌溉保證率、剖面構(gòu)型、土壤有機(jī)質(zhì)含量、地表巖石露頭狀況和土壤類型6個(gè)指標(biāo),而立地條件評(píng)價(jià)體系包括耕地到主干道距離、耕地到中心城鎮(zhèn)距離、耕地與其相鄰?fù)恋仡愋瓦m宜性和耕地連片性4個(gè)指標(biāo)。隨機(jī)提取5000個(gè)耕地地塊,測算其耕地綜合質(zhì)量評(píng)價(jià)分值與標(biāo)準(zhǔn)糧產(chǎn)量的相關(guān)關(guān)系,確定研究區(qū)耕地自然質(zhì)量評(píng)價(jià)與耕地立地條件評(píng)價(jià)的最佳比例關(guān)系為3:2。(2)本文以南江縣為研究對(duì)象進(jìn)行實(shí)證研究,通過耕地綜合質(zhì)量評(píng)價(jià)模型,最終確定南江縣耕地綜合質(zhì)量狀況。研究認(rèn)為南江縣耕地綜合質(zhì)量最優(yōu)的耕地面積為3889.20hm2,占耕地總面積的8.6%,主要位于南江縣中部、南部地區(qū),包括長赤鎮(zhèn)、正直鎮(zhèn)、沙河鎮(zhèn)、大河鎮(zhèn)、下兩鎮(zhèn)、八廟鄉(xiāng)、傅家鄉(xiāng)、天池鄉(xiāng)、鳳儀鄉(xiāng)和朱公鄉(xiāng)等鄉(xiāng)鎮(zhèn),該區(qū)域耕地自然條件較好,社會(huì)經(jīng)濟(jì)條件優(yōu)越,耕地綜合質(zhì)量較高。參照前人研究成果和上級(jí)下達(dá)目標(biāo),最終確定60分的耕地可劃為基本農(nóng)田,面積為39312.90hm2,基本農(nóng)田保護(hù)率達(dá)到86.93%。(3)通過劃定結(jié)果之間的比較,得出此方法劃定的基本農(nóng)田不僅能滿足基本農(nóng)田的內(nèi)在涵義,而且可以滿足上級(jí)下達(dá)的劃定要求;引入土地人口資源承載力概念對(duì)研究結(jié)果進(jìn)行驗(yàn)證,發(fā)現(xiàn)除南江鎮(zhèn)以外其余鄉(xiāng)鎮(zhèn)基本都能滿足本鄉(xiāng)鎮(zhèn)所能承載人口的最低基本農(nóng)田理論保有量。
[Abstract]:Basic farmland is the essence of cultivated land. How to define basic farmland scientifically and reasonably, It is an urgent problem to solve the contradiction between food security and social development. This paper puts forward the natural quality and site condition of cultivated land on the basis of comprehensive analysis of the connotation of basic farmland and the specific terrain and geomorphological factors in the study area. On the basis of which the evaluation system of natural quality of cultivated land and the evaluation system of site conditions of cultivated land are constructed. The evaluation of cultivated land natural quality and cultivated land site condition is carried out, the comprehensive quality evaluation system of cultivated land is constructed, and the basic farmland is delimited. Taking Nanjiang County as an example, this paper discusses the basic farmland delineation method suitable for middle and low mountain hilly areas in northeast Sichuan. The following research results are obtained: 1) the natural quality evaluation system of cultivated land in Nanjiang County includes six indexes: slope, irrigation guarantee rate, profile configuration, soil organic matter content, outcrop status of surface rock and soil type. The evaluation system includes four indexes: the distance between cultivated land and main road, the distance between cultivated land and central town, the suitability of cultivated land and its adjacent land types and the continuity of cultivated land. The correlation between the evaluation score of comprehensive quality of cultivated land and the yield of standard grain is calculated, and the optimal proportion of evaluation of natural quality of cultivated land and site condition of cultivated land is determined to be 3: 2. 2. The paper takes Nanjiang County as the research object. Based on the comprehensive quality evaluation model of cultivated land, the comprehensive quality of cultivated land in Nanjiang County is determined. The optimum cultivated land area in Nanjiang County is 3889.20 hm2.It accounts for 8.6% of the total cultivated land area, mainly located in the central and southern part of Nanjiang County. Including Changchi Town, Zhengzheng Town, Shahe Town, Dahe Town, Lower two towns, Bamiao Township, Fu hometown, Tianchi Township, Fengyi Township, Zhu Gongxiang and other townships. The natural conditions of cultivated land in this region are relatively good, and the social and economic conditions are superior. The comprehensive quality of cultivated land is relatively high. According to the previous research results and the goals issued by the higher authorities, 60 points of cultivated land can be classified as basic farmland, with an area of 39312.90 hm2.The protection rate of basic farmland reaches 86.93%. It is concluded that the basic farmland delineated by this method can not only satisfy the inherent meaning of the basic farmland, but also meet the requirements of the demarcation issued by the superior, and the concept of carrying capacity of land population and resources is introduced to verify the research results. It is found that all the other townships except Nanjiang Town can basically satisfy the minimum basic farmland theoretical quantity which can carry the population.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：F323.211

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相關(guān)碩士學(xué)位論文 前1條

1 湯敏;基于數(shù)量—布局—質(zhì)量的基本農(nóng)田劃定與保護(hù)研究[D];中國地質(zhì)大學(xué)（北京）;2011年

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本文編號(hào)：1588296