基于高程约束的区域LUCC及其生态效应研究

发布时间：2018-03-27 17:04

本文选题：LUCC　切入点：高程约束　出处：《福建师范大学》2011年硕士论文

【摘要】：以福州市五区七县(不包括平潭县)为研究区,以1994-2006年间3期遥感影像解译分类获得的土地利用/覆被数据为基础,采用多种反映土地利用/覆被变化(LUCC)的指数和模型,引入区域农田食物生产单价系数和区域服务支付系数,构建个性化的生态系统服务价值测算模型及生态效应测算模型,对研究区的全域及不同高程约束下的LUCC及其生态效应进行分析。研究结果显示：1)1994-2006年间,土地利用/覆被发生了明显的此消彼长变化：林地、耕地和未利用地减少,其余类型增加；其转移特征为：以林地转变为耕地、草地和园地,以及耕地转变为建设用地和林地为主。在土地利用/覆被变化速度方面,未利用地和建设用地的单一动态度最大,全域的土地利用/覆被综合动态度持续上升,且后一时段(2001-2006年)的增速超过前一时段(1994-2001年)。土地利用程度指数有小幅增加,LUCC导致的生态系统服务价值有大幅增加,LUCC的生态效应指数和生态效应模数减增互现。2)从高程角度看,耕地、建设用地和未利用地的变化集中于第一级,园地的变化集中于第四、五级,水域和草地的变化集中于第三、二级,林地的变化集中于第一、三、四级。各高程等级的土地利用程度综合指数随海拔升高而递减。由LUCC导致的各高程等级的生态服务价值量均增加。各高程等级LUCC的生态效应指数大致呈现随高程等级增加而减小的特征,且在后一时段均较前一时段明显减小；各高程等级LUCC的生态效应模数亦大致呈现随高程等级增加而减小的趋势,且后一时段第一、二、三级的生态效应模数较前一时段均增加,而其余两个高程等级则均减小。
[Abstract]:Taking the five districts and seven counties (excluding Pingtan County) in Fuzhou as the research area, based on the land use / cover data obtained from the interpretation and classification of three remote sensing images from 1994 to 2006, various indices and models reflecting land use / cover change (LUCCs) were adopted. The unit price coefficient of regional farmland food production and the regional service payment coefficient are introduced to construct a personalized ecosystem service value measurement model and an ecological effect measurement model. The LUCC and its ecological effects under different height constraints in the study area were analyzed. The results showed that land use / cover changed significantly from 1994 to 2006: forest land, cultivated land and unused land decreased. The other types are increased; their transfer characteristics are as follows: the conversion of woodland into cultivated land, grassland and garden land, and the conversion of cultivated land to construction land and woodland, and in terms of the rate of land use / cover change, The single dynamic degree of unused land and construction land is the largest, and the comprehensive dynamic degree of land use / cover in the whole area continues to increase. Moreover, the growth rate of the latter period (2001-2006) was higher than that of the previous period (1994-2001). The land use degree index increased slightly and the value of ecosystem services caused by Lucc increased significantly, and the ecological effect index and the modulus of ecological effect increased and increased. 2) from the elevation point of view, The changes of cultivated land, construction land and unused land are concentrated in the first level, the changes of garden land are concentrated in the fourth and fifth levels, the changes of waters and grasslands are concentrated in the third and second levels, and the changes of forest land are concentrated in the first and third levels. Grade 4. The comprehensive index of land use degree of each elevation grade decreases with elevation. The value of ecological service of each elevation grade caused by LUCC increases, and the ecological effect index of LUCC of each elevation grade presents approximately with elevation. A feature that increases and decreases in rank, The ecological effect modulus of LUCC of each elevation grade also showed the trend of decreasing with the increase of elevation grade, and the ecological effect modulus of the first, second and third stage of the later period were all increased compared with the previous period, and the ecological effect modulus of each elevation grade in the second period was significantly lower than that in the previous period, and the ecological effect modulus of each elevation grade also showed a trend of decreasing with the increase of elevation grade. The other two levels decreased.
【学位授予单位】：福建师范大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：X196;F301

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