本文關(guān)鍵詞：平原糧食生產(chǎn)核心區(qū)耕地細(xì)碎化定量評(píng)價(jià)　出處：《河南農(nóng)業(yè)大學(xué)學(xué)報(bào)》2015年04期 　論文類型：期刊論文

  更多相關(guān)文章： 耕地細(xì)碎化指數(shù) 定量評(píng)價(jià)指標(biāo)體系 河南 平原糧食生產(chǎn)核心區(qū)

【摘要】：以河南省糧食核心區(qū)主體范圍內(nèi)的平原鄉(xiāng)鎮(zhèn)為研究區(qū)域,以行政村為調(diào)查和評(píng)價(jià)單元,探索耕地細(xì)碎化定量狀況。利用遙感影像、土地利用數(shù)據(jù)庫與實(shí)地校核獲取研究區(qū)域耕地圖斑數(shù)據(jù),采用層次分析法,選取戶均地塊數(shù)、塊均耕地面積、地塊密度、景觀形狀指數(shù)、分離度、分維數(shù)、土地利用程度、潛在農(nóng)業(yè)人口轉(zhuǎn)移指數(shù)8個(gè)評(píng)價(jià)指標(biāo)構(gòu)建鄉(xiāng)鎮(zhèn)尺度的耕地細(xì)碎化定量評(píng)價(jià)體系,進(jìn)行耕地細(xì)碎化量化評(píng)價(jià)。結(jié)果表明:研究區(qū)域的耕地細(xì)碎化指數(shù)CLFI(Cultivated land fragmentation index)為0.769 9,為Ⅲ級(jí),中度細(xì)碎化;各行政村耕地細(xì)碎化指數(shù)CLFI范圍在0.689 1~0.980 1,主要分布在0.7~0.8,細(xì)碎化等級(jí)多屬于Ⅲ級(jí),中度細(xì)碎化;隨著距離鄉(xiāng)鎮(zhèn)政府所在地白寺村的增加,耕地細(xì)碎化指數(shù)CLFI逐漸增高,耕地細(xì)碎化級(jí)別與程度降低;其原因主要是耕地的稀缺性和人口的不斷增長,溝渠、道路對(duì)耕地的分割,家庭聯(lián)產(chǎn)承包責(zé)任制以及區(qū)域經(jīng)濟(jì)的發(fā)展等。商水縣白寺鎮(zhèn)耕地細(xì)碎化指數(shù)CLFI為0.769 9,產(chǎn)權(quán)制度下的戶均地塊數(shù)和塊均耕地面積對(duì)白寺鎮(zhèn)耕地細(xì)碎化程度的影響較大,戶均地塊數(shù)、地塊密度和景觀形狀指數(shù)在總體上限制了CLFI的提高。
[Abstract]:Taking the plain villages and towns in the grain core area of Henan Province as the research area and the administrative village as the investigation and evaluation unit, the paper explores the quantitative status of cultivated land fragmentation and makes use of remote sensing images. Land use database and field check to obtain the study area cultivated land map spot data, using the analytic hierarchy process, select the number of block plots, block average cultivated land area, plot density, landscape shape index, separation degree, fractal dimension. Land use degree, potential agricultural population transfer index, 8 evaluation indicators to build the township scale of farmland fragmentation quantitative evaluation system. The quantitative evaluation of the fineness of cultivated land was carried out. The results showed that the fineness index of cultivated land CLFI(Cultivated land fragmentation index was obtained from the study area. 0.769 9. Grade 鈪，

本文編號(hào)：1389533