地理研究 ›› 2004, Vol. 23 ›› Issue (2): 157-164.doi: 10.11821/yj2004020003

• 论文 • 上一篇    下一篇

陕西省土地利用动态变化分析

李团胜   

  1. 长安大学地球科学与国土资源学院 西安710054
  • 收稿日期:2003-08-06 修回日期:2003-12-10 出版日期:2004-04-15 发布日期:2004-04-15
  • 作者简介:李团胜(1963-),男,陕西武功人,副教授,博士。主要从事土地利用/覆盖变化、景观生态、自然地 理等方面的教学与科研工作,发表论文50篇,出版著作3部。E-mail:tuanshli@pub.xaonline.com
  • 基金资助:

    国家自然科学基金重点项目(90102004);陕西省自然科学研究计划项目(2002D06)

Analysis on dynamic change of land use in Shaanxi Province

LI Tuan-sheng   

  1. College of Earth Science and Land &|Resources, Chang'an University, Xi'an 710054, China
  • Received:2003-08-06 Revised:2003-12-10 Online:2004-04-15 Published:2004-04-15

摘要:

基于陕西省 1 991~2 0 0 1年土地利用现状年度变更调查数据 ,分析了陕西省 1 991年初到2 0 0 1年末的土地利用动态变化。在这 1 1年间陕西省土地利用变化较大 ,其中以园地变化最大。城市用地、农村居民点及交通用地增长较快。从地区来看 ,杨凌土地利用最活跃 ,汉中土地利用最不活跃。土地利用程度最大的是杨凌 ,最小的是商洛。渭南、西安和杨凌的土地利用程度提高了 ,其余各地土地利用程度减小了。土地利用变化存在明显的地域差异 ,陕北、陕南以生态退耕还林还草为主 ,关中以结构调整为主。政策因素、自然因素、经济杠杆的调节及人口因素是陕西省土地利用变化的主要原因。

关键词: 土地利用动态变化, 驱动力, 陕西省dynamic change of land use, driving factors, Shaanxi Province

Abstract:

Based on detailed survey data of land use from early 1991 to late 2001, using models such as synthetic dynamic degree model,conversion rate model, new increase rate model, synthetic index model and synthetic index change model of land use, this paper analyzed great changes in land use in Shaanxi Province during this period of time.Figures indicated that 119.40×10 4hm 2 of farmland, 2.21×10 4hm 2of garden land,7.64×10 4hm 2 of forest land,21.02×10 4hm 2 of grassland,1.52×10 4hm 2 of rural residential land and city and town land,0.13×10 4hm 2 of traffic land,1.07×10 4hm 2 of waters and 14.85×10 4hm 2 of unused land changed to other types of land. Meanwhile, 10.44×10 4hm 2 of farmland, 45.47×10 4hm 2 of garden land, 59.79×10 4hm 2 of forest land, 29.28×10 4hm 2 of grassland, 9.65×10 4hm 2 of rural residential land and city and town land, 2.66×10 4hm 2 of traffic land, 2.36×10 4hm 2 of waters,and 8.19×10 4hm 2 of unused land were converted from other types of land. The synthetic dynamic degree of land use in Shaanxi is 0.726%·a -1. The covertsion rate of farmland is 1.885%·a -1, the biggest number among conversion rates of other land use types.Synthetic index of land use degree in Shaanxi is 2.301 in 1991, and 2.282 in 2001. The conclusions are drawn as follows: (1)Land use changed greatly in Shaanxi Province from 1991 through to 2001. Garden land changed most greatly, with cultivated land, traffic land, residential and urban land, and grassland also witnessing greater changes. (2)Land use in Yangling was most active and in Hanzhong was least active. The overall relative change rate of land use in Yan'an was high, because Yan'an emphasized the adjustment of industrial structure, put the policy of returning cultivated land to forest and grass into effect, and improved the infrastructure construction such as traffic conditions during the last 11 years. (3)Urban, rural residential and traffic land uses increased quickly, which indicates that under the situation of the West China development, the traffic conditions were improved and the urbanization steps quickened constantly in Shaanxi. (4)The land use degree in Yangling was the biggest. The one in Shangluo was the least. The land use degree in Weinan, Xi'an and Yangling increased during the last 11 years, and the land use degree in other regions decreased. (5) The cultivated land returning to forest and grass mainly happened in south and north of Shaanxi and agricultural structure adjustment mainly in the middle of Shaanxi.(6) The driving factors of land use change in Shaanxi are natural factor, policy factor, economic adjustment and population factors.

Key words: dynamic change of land use, driving factors, Shaanxi Province