張昌善 程文仕 劉學錄



摘要 在測算蘭州市土地集約度的基礎上,構建改進的灰色關聯度模型,研究蘭州市土地集約度與土地利用結構之間的相關性。結果表明:1998—2008年蘭州市土地集約度逐步提高,經歷了由粗放、基本集約到較集約的3個階段;土地集約度與土地利用結構之間呈現明顯的關聯性,集約度與建設用地、林地負相關,且與建設用地負相關性較高;與耕地、牧草地、未利用地、園地呈現正相關且相關程度依次減弱。因此,調整土地利用結構是提高土地集約利用的有效途徑,因地制宜地控制建設用地,優化耕地、園地、牧草地、未利用地的利用,有助于提高土地集約度。
關鍵詞 土地集約度;土地利用結構;乘數合成歸一法;改進灰色關聯度模型
中圖分類號 F301.2 文獻標識碼 A 文章編號 0517-6611(2017)13-0195-03
Study on the Relationship between Urban Land Intensive Degrees and Land Use Structure Based on the Improved Grey Relational Model in Lanzhou City
ZHANG Chang-shan1,2,CHENG Wen-shi1,LIU Xue-lu1*
(1.College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou,Gansu 730070;2.Yumen City Land Resources Bureau,Jiuquan,Gansu 735000)
Abstract On the basis of land intensive degrees results,quantitative relationship between land intensive degrees and land use structure were studied using the improved grey relational model. The results showed that:Land intensive degrees gradually increased and had experienced from extensive to more intensive 3 periods in Lanzhou City during 1998-2008;land intensive degrees and land use structure had obvious relation that intensive degrees were negatively related to construction land, woodland, particularly negative relation high for construction land, and the arable land, forage land, unused land and garden land presented positive relation that weakened accordingly. Therefore, adjusting land use structure was effective way to improve land intensive utilization, to restrain the spread of construction land according to local conditions and to optimize cultivated land, garden land, meadow land and unused land utilization, which help to improve land intensive degrees.
Key words Land intensity degree;Land use structure;Multipliers method of synthesis;The improved grey relational model
隨著工業化、城鎮化進程的加快,人地矛盾日益突出。土地集約利用是推動城鎮化快速良性發展和生活環境質量全面提高的重要途徑[1]。開展土地集約利用評價,掌握土地集約利用度與土地利用結構的關系,有利于提高土地利用率,優化配置、合理利用土地資源[2]。土地利用集約度是指在生產過程中,單位土地面積投放的資本和勞動數量;土地利用結構是土地功能分區在土地利用上的實體表現。目前,關于土地集約度與利用結構關系的研究較少,僅有于永建等[3]采用熵值法對部分區域城鎮土地集約利用度與土地利用結構的關系進行了研究,少見有關構建土地集約度與土地利用結構的關聯測度模型的研究報道?!?br>