摘要
以2005年、2010年、2020年三期遥感影像为基础,依据单一土地动态度、土地利用变化率和土地转移矩阵等方法对关中汉唐帝陵区土地利用/覆被的变化规律进行研究。结果表明:(1)在2005—2020年间,耕地面积占比逐年下降,园地和建设用地面积占比逐年上升,这3种土地利用类型构成了研究区主要的土地类型。(2)在整个时段内,土地利用程度综合指数一直在增加,主要是由于园地和建设用地面积占比大幅度增加所致。(3)在2005—2020年间,只有兴平市和渭城区的所有土地利用类型的相对变化率都大于1。(4)在所有时段内,耕地转出量最大,园地转入量最大,水域转出和转入量最小。(5)耕地面积和其他土地面积的快速减少是导致区域粮食安全问题的主要因素。为此,提出了开展土地整理、优化土地利用结构、实现集约节约利用、严格落实耕地的占补平衡制度的对策建议。为保障关中汉唐帝陵区的粮食安全提供理论指导。
Based on the remote sensing images of 2005,2010 and 2020,the land use/cover change patterns emperors’mausoleum in Guanzhong in the Han and Tang dynasties are studied based on unitary land dynamics,land use change rate and land transfer matrix.The results show that:(1)the proportion of cultivated land declined year by year during 2005-2020,and the proportion of garden land and construction land increased year by year,with these three types of land use constituting the main land types in the studied area.(2)The comprehensive land use index has been increasing throughout this period of time mainly due to a significant increase in the proportion of land used for gardening and construction.(3)Between 2005 and 2020,only Xingping City and Weicheng District had relative rate of change greater than one for all land use types.(4)The cultivated land was the largest land outflow area at all time periods.The garden was the largest land inflow area at all times,with the water land being the smallest land inflow ald oufflow area in all periods of time.(5)The rapid reduction of cultivated and other land areas is a major factor leading to regional food security problems.Therefore,countermeasures and suggestions were proposed to carry out land arrangement,optimize land use structure,realize intensive and economical use,and strictly implement the balance system of occupancy and compensation of cultivated land.It also provides theoretical guidance for ensuring food security in the Han-Tang Imperial Tomb areas of Guanzhong.
作者
韩申山
郭玲霞
许晓婷
王建兴
HAN Shenshan;GUO Lingxia;XU Xiaoting;WANG Jianxing(School of Resources,Environment and Historical Culture,Xianyang Normal University,Xianyang 712000,Shaanxi,China)
出处
《咸阳师范学院学报》
2020年第6期40-47,共8页
Journal of Xianyang Normal University
基金
陕西省教育厅哲学社会科学重点研究基地项目(17JZ079)。
