基于LUCC的黄土丘陵区生态服务价值动态演变研究  

Dynamic Evolution of the Ecological Service Value Based on LUCC in Loess Hilly-gully Region

作　　者：张文海[1] 赵阳[1] 余新晓[1] 刘旭辉[1] 贾剑波[1] 孙佳美[1] 

机构地区：[1]北京林业大学水土保持学院水土保持与荒漠化防治教育部重点实验室,北京100083

出　　处：《应用基础与工程科学学报》2013年第3期442-452,共11页Journal of Basic Science and Engineering

基　　金：国家自然科学基金(41171028);国家"十二五"科技支撑项目(2011BAD38B05)

摘　　要：结合黄土丘陵区土地利用特点,对该区域不同土地利用类型单位面积生态服务价值表进行了扩展与修正.并以该区域典型流域罗玉沟4期土地利用数据为基础,分析并预测了该流域1986—2020年间土地利用变化特征及其生态服务价值动态演变规律.研究结果表明,1986—1995年间流域土地利用类型发生巨大变化,72.98%的坡耕地转变为梯田,同一时期内流域生态服务价值增加15.04%;1995、2008以及2020年流域生态服务价值较1986年分别增加15.31%,13.29%和15.64%,具体表现为支持服务与供给服务价值的增加.坡耕地、梯田、林地是流域生态服务价值构成的主体,平均占总生态服务价值的82.35%;坡改梯工程的实施是流域生态服务价值增加的主要驱动力,而城镇建设面积的增加则会在一定程度上导致流域生态服务价值减少.Combined with the land use characteristics of the Loess hilly-gully region, eco-service value of per unit area with different land-use types were extended and corrected. The eco-services value of Luoyugou watershed resulted from the land-use change were analyzed and predicted dynamically with land use data of four periods. The results indicated that land-use types changed dramatically from 1986 to 1995. And large-scale sloping farmlands（ about 72.98% ） were converted to terraces in the same period, accordingly, the eco-service value of the watershed increased 15.04 %. Moreover, the eco-service values in 2001,2008 and 2020 increased by 15.31% ,13.29% and 15.64% ,respectively,than that in 1986,which was majorly due to the increase in support services and supply services. Sloping farmland, terrace and forest were the main contributor of the eco-service value, which accounted for an average of 82.35% of the total value of eco-services in the study region. In addition, the result also illustrated that the implementation of transforming slope into terrace was the main driving force for the increase in the value of eco-services, while the increase in the area of the settlements would lead to the decline in the value of watershed eco-services to some extent

关 键 词：黄土丘陵区 马尔科夫模型 修正 土地利用 覆被变化 生态服务价值 

分 类 号：F301.2[经济管理—产业经济] X826[环境科学与工程—环境工程]