何锐, 赵运林, 徐正刚, 段酬苍, 陶彦妤, 彭姣. 1989—2013年西洞庭湖土地类型及水禽栖息地变动研究[J]. 西南林业大学学报, 2016, 36(4): 115-120. DOI: 10.11929/j.issn.2095-1914.2016.04.019
引用本文: 何锐, 赵运林, 徐正刚, 段酬苍, 陶彦妤, 彭姣. 1989—2013年西洞庭湖土地类型及水禽栖息地变动研究[J]. 西南林业大学学报, 2016, 36(4): 115-120. DOI: 10.11929/j.issn.2095-1914.2016.04.019
He Rui1, 2, Zhao Yunlin1, 2, Xu Zhenggang 2, 3. Changes of Land Use and Waterfowl Habitats in Western Dongting Lake from 1989 to 2013[J]. Journal of Southwest Forestry University, 2016, 36(4): 115-120. DOI: 10.11929/j.issn.2095-1914.2016.04.019
Citation: He Rui1, 2, Zhao Yunlin1, 2, Xu Zhenggang 2, 3. Changes of Land Use and Waterfowl Habitats in Western Dongting Lake from 1989 to 2013[J]. Journal of Southwest Forestry University, 2016, 36(4): 115-120. DOI: 10.11929/j.issn.2095-1914.2016.04.019

1989—2013年西洞庭湖土地类型及水禽栖息地变动研究

Changes of Land Use and Waterfowl Habitats in Western Dongting Lake from 1989 to 2013

  • 摘要: 选取1989年、2002年和2013年的遥感影像对西洞庭湖土地利用类型转移格局及水禽栖息地进行遥感解译与变动分析。结果表明:1989—2013年,保留率最高的仍然是水体 (8734%) 和泥滩地 (5961%),保留率最低的是林地 (1379%),草滩地的保留率仅为3054%,而向芦苇滩地、旱地、林地的转化率则分别达2026%、2091%、1893%,远高于向水体与泥滩地转化的比例。虽然林地向泥滩地转化的比例达到了3477%,但芦苇滩地、旱地、林地以相互转化为主。西洞庭湖湿地破碎度升高,各种土地利用类型分布均匀度也增高。西洞庭湖的水禽栖息地变动大致可分为2个阶段:1989—2002年水体面积增长近14%,湿地优势度增长;2002—2013年水体面积减少近11%,林地面积增长约4%。在影响西洞庭湖水禽栖息地变动的驱动因素中,退田还湖、围湖养鱼、三峡工程、芦苇种植与杨树栽培等人类活动是最为重要的驱动因子,不适当的人为干预往往导致水禽生境退化。

     

    Abstract: In order to explore the transfer pattern of land use type and remote sensing interpretation and changes of waterfowl habitat in western Dongting lake, remote sensing images of winter in 1989, 2000 and 2013 were chosen and interpreted respectively in the study. The study showed that retention proportion of water and mudflats land was higher than other land use during 1989 to 2013. 8734% of water and 5961% of mudflats land were kept during the period. Only 3054% of marsh land was keep during the above period. The total transformation proportion of marsh land to reed land, dry land and forest was 2026%, 2091% and 1893% respectively and was higher than the transformation proportion of marsh land to water and mudflat land. In the meanwhile, 3477% of forest transformed to mudflat, while reed land, dry land and forest transformed each other during the period. Both of fragmentation index and evenness index of land use increased during the period. Changes of waterfowl habitat could be divided into two phase for the period. The water proportion increased 14% and wetland increased from 1989 to 2002, while water proportion decreased 11% and forest proportion increased 4% from 2002 to 2013. Human activities, such as returning farmland to lake, piscining in lake, the three gorges project, reed planting and poplar cultivation, are an important driving factor to the change of waterfowl habitat. Inappropriate human disturbance can be always leading to degeneration of waterfowl habitat.

     

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