發(fā)布時間：2018-03-25 13:03

  本文選題：永久基本農(nóng)田　切入點(diǎn)：網(wǎng)格化　出處：《中國農(nóng)業(yè)資源與區(qū)劃》2017年05期

【摘要】：[目的]通過運(yùn)用網(wǎng)格化技術(shù)和綜合評價法將研究區(qū)劃分為4類永久基本農(nóng)田劃定類型區(qū),為創(chuàng)新縣域尺度永久基本農(nóng)田保護(hù)區(qū)劃定的方法和技術(shù)體系,協(xié)調(diào)耕地保護(hù)、經(jīng)濟(jì)發(fā)展和生態(tài)保護(hù)之間的關(guān)系提供有力支撐。[方法]文章以宜興市為實(shí)證研究區(qū),將城鎮(zhèn)周邊區(qū)域網(wǎng)格化,選取綜合等別、距城鎮(zhèn)和可建設(shè)占用區(qū)的距離等因子作為評價指標(biāo),確定永久基本農(nóng)田約束劃入?yún)^(qū)。同時,根據(jù)土壤綜合污染指數(shù)修訂耕地利用等,得到耕地綜合等,然后以耕地距離城鎮(zhèn)、交通干線的距離和空間連片度作為評價指標(biāo),對耕地進(jìn)行立地條件評價并劃分等級,最后將約束劃入?yún)^(qū)以外的耕地以綜合等-立地條件的形式,劃分為不同的類型區(qū)。[結(jié)果](1)城鎮(zhèn)外延區(qū)被劃分為1.232 0萬個100m×100m的網(wǎng)格評價單元,在網(wǎng)格環(huán)境下,納入約束劃入?yún)^(qū)的耕地面積5 170.33hm~2,占全部耕地的9.65%;(2)耕地利用等修訂后得到的綜合等與利用等相比,耕地等別依然集中在4、5等,受重金屬污染區(qū)影響出現(xiàn)了8等耕地;(3)約束劃入?yún)^(qū)外的耕地被劃分為優(yōu)先劃入?yún)^(qū)、適宜劃入?yún)^(qū)及整治劃入?yún)^(qū),耕地面積占比分別為21.16%、40.52%及28.67%。[結(jié)論]通過網(wǎng)格化確定的約束劃入型主要分布在規(guī)劃選定的重點(diǎn)建設(shè)項(xiàng)目區(qū)和有條件建設(shè)區(qū),與城鎮(zhèn)主要發(fā)展方向一致,既滿足了城鎮(zhèn)連片發(fā)展的需求,也實(shí)現(xiàn)了對城鎮(zhèn)周邊優(yōu)質(zhì)耕地優(yōu)先保護(hù);優(yōu)先劃入型分布在城鎮(zhèn)周邊或交通干線沿線,區(qū)位條件優(yōu)越,且耕地質(zhì)量高;適宜劃入型在立地條件或綜合等方面有較大發(fā)展?jié)摿?可通過整治措施提升其質(zhì)量水平;整治劃入型受重金屬污染嚴(yán)重,綜合等別較低且立地條件較差,在經(jīng)過差別化的土地整治后可作為入選永久基本農(nóng)田的后備資源。
[Abstract]:[objective] to divide the study area into 4 types of permanent basic farmland by using gridding technique and comprehensive evaluation method, and to coordinate cultivated land protection for innovating the method and technical system of defining permanent basic farmland reserve at county scale. The relationship between economic development and ecological protection provides strong support. [methods] taking Yixing City as an empirical study area, the paper gridded the surrounding areas of cities and towns, and selected comprehensive, etc. Factors such as distance from towns and buildable occupied areas are used as evaluation indexes to determine the restriction of permanent basic farmland. At the same time, according to the comprehensive pollution index of soil, the use of cultivated land is revised to obtain the comprehensive utilization of cultivated land, and then the distance between cultivated land and towns is taken as the distance between cultivated land and towns. The distance and spatial connectivity of traffic trunk lines are used as evaluation indexes to evaluate and classify the site conditions of cultivated land. Finally, the cultivated land outside the area is restricted in the form of comprehensive iso-site conditions. Divided into different types of areas. [results] the urban epitaxial area is divided into 1.232 million grid evaluation units of 100m 脳 100m, in the grid environment, The area of cultivated land included in the restricted area is 5170.33hmm2, which accounts for 9.65% of the total cultivated land. Compared with the utilization of cultivated land and so on, the cultivated land is still concentrated in 4% of the total cultivated land. Under the influence of heavy metal pollution area, 8 grade cultivated land is divided into priority area, suitable area and remediation area, and the cultivated land that is restricted into the area is divided into priority area. The proportion of cultivated land area is 21.16% and 28.6772% respectively. [conclusion] the constrained transfer type determined by gridding is mainly distributed in the key construction project areas and conditional construction areas, which are consistent with the main development direction of cities and towns. It not only meets the needs of urban continuous development, but also realizes the priority protection of high-quality cultivated land around the town, the priority is distributed around the town or along the main traffic lines, the location conditions are superior, and the quality of cultivated land is high. The suitable type has great development potential in site condition or synthesis, and can improve its quality level through regulation measures, and the regulation type is seriously polluted by heavy metals, and the comprehensive classification is low and the site condition is poor. After differential land reclamation, it can be used as a reserve resource for permanent basic farmland.
【作者單位】： 中國地質(zhì)大學(xué)土地科學(xué)技術(shù)學(xué)院;國土資源部土地整治重點(diǎn)實(shí)驗(yàn)室;
【基金】：國土資源部公益性行業(yè)科研專項(xiàng)課題“重金屬超標(biāo)農(nóng)用地安全利用管控技術(shù)研究”(201511082-02)
【分類號】：F323.211;P208

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