文章摘要
孙琳,唐国平,窦乙峰,刘永林,吴裕珍.东江流域2001-2013年土地利用/覆被类型变化的时空特征及成因[J].水土保持通报,2018,38(3):293~300,306
东江流域2001-2013年土地利用/覆被类型变化的时空特征及成因
Land Use/Cover Change and Underlying Driving Forces in Dongjiang River Basin During 2001-2013
投稿时间:2017-11-16  修订日期:2017-12-06
DOI:10.13961/j.cnki.stbctb.2018.03.047
中文关键词: 土地利用/覆被类型  时空差异  驱动力  东江流域
英文关键词: land use/cover  spatiotemporal heterogeneity  driving forces  Dongjiang River basin
基金项目:国家自然科学基金项目“气候变化与土地利用对东江流域河流碳氮营养物浓度的影响”(41671192);广州市科委基金项目“分析陆地植被对流溪河径流和水体溶解有机氮浓度的调控”(42050441)
作者单位E-mail
孙琳 中山大学 水资源与环境系, 广东 广州 510275  
唐国平 中山大学 水资源与环境系, 广东 广州 510275 Tanggp3@mail.sysu.edu.cn 
窦乙峰 中山大学 水资源与环境系, 广东 广州 510275  
刘永林 中山大学 水资源与环境系, 广东 广州 510275  
吴裕珍 中山大学 水资源与环境系, 广东 广州 510275  
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中文摘要:
      [目的]区分人类活动和自然环境变化对东江流域土地利用/覆被类型变化的贡献率,为优化流域土地利用方式、保护流域生态环境和支持粤港澳大湾区建设提供有益的信息和科技支撑。[方法]基于时间序列的遥感影像土地利用/覆被类型栅格数据,结合区域经济发展、土地利用评价指标体系和灰色关联分析,量化东江流域2001-2013年间土地利用/覆被类型变化的时空特征和成因。[结果]①随着时间推移,东江流域土地利用/覆被类型格局由常绿阔叶林、草地和耕地共同主导型转变为常绿阔叶林主导型;②研究期内不同土地利用/覆被类型变化差异明显,灌丛、混合林、常绿阔叶林和草地变化剧烈且相互之间转化频繁,水域、耕地和城镇用地面积变化相对平缓;③非城镇用地转化空间差异显著,耕地的转化程度表现为:下游 > 上游 > 中游;④人口增加、城市建设、技术革新和经济增长是推动东江流域土地利用/覆被类型发生变化的主要原因。[结论]总体来说,最近10 a多东江流域的土地利用/覆被类型变化有利于流域生态环境和水资源的保护,进而有助于粤港澳大湾区的建设。
英文摘要:
      [Objective] To examine the spatiotemporal characteristics of land use/cover change and underlying forces in the Dongjiang River basin in order to provide useful information for optimizing the way of land use and supporting the construction of the big-bay area in Guangdong, Hongkong, and Macao.[Methods] Based on a series of land use/cover data derived from remote sensing images, we analyzed land use/cover change in the basin during 2001-2013 using several metrics such as land use net change, annual change rate, and the integrated degree of land use dynamics. The gray-relevance analysis was used to explore the driving forces of land use/cover change in the basin.[Results] ① Evergreen broadleaf forest, grassland and cropland used to be four major types of land use/cover in the basin, while evergreen broadleaf forest became the dominant type during 2001-2013. ② Although shrubs, mixed forest, evergreen broadleaf forest, and grassland experienced significant change, their areas were relatively stable due to the inter-conversions among those land types. ③ The extent of built-up land was the highest in the lower-reach areas, higher in the mid-reach areas, and the lowest in the upper-reach areas of the basin. ④ Population growth, urbanization, technology renovation, and rapid economic development were the main driving forces that trigger land use/cover change in the basin.[Conclusion] Land use/cover change in the Dongjiang River basin over the past decade was beneficial to the protecting of ecological environment and water resources, and was also contributive to the construction of the big-bay area of Guangdong, Hongkong and Macao.
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