1987-2015年七里海潟湖湿地景观格局变化及驱动力分析
Wetland landscape pattern changes and their driving force of Qilihai lagoon in 1987-2015
投稿时间:2017-03-16  修订日期:2018-07-19
中文关键词:潟湖湿地  景观格局变化  驱动力
英文关键词:Lagoon wetland  Landscape pattern changes  Driving force
基金项目:昌黎黄金海岸国家级自然保护区主要保护对象演变特征及环境效应研究”(14273303D)
作者单位E-mail
高杰 河北师范大学资源与环境科学学院 18232162140@163.com 
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中文摘要:
      基于1987,1994,2001,2005,2010和2015年的遥感数据,运用景观生态学原理,借助遥感和GIS技术,利用转移矩阵法、湿地动态度和景观格局指数等方法对1987-2015年七里海潟湖湿地景观格局变化进行分析,并利用主成分分析法对驱动力进行研究。结果表明:1987-2001年七里海潟湖湿地总面积持续增加,之后到2015年呈减小趋势,其中自然湿地面积逐渐减少到436.66 hm2,减少了74.0%。人工湿地面积比重由13.83%上升到67.92%,面积增加到1580.30 hm2。大面积的自然湿地转化为稻田和海水养殖场,各景观的百分比变化较大,景观多样性和均匀度降低,蔓延度增大,破碎度指数从0.005增加至0.012,表明景观异质性降低,形状趋于复杂化。社会经济和人口因素是稻田和海水养殖场规模扩大、自然湿地转化为人工湿地的主要驱动力。七里海潟湖湿地景观格局变化及驱动力分析可为湿地恢复与重建、自然保护区生物多样性提高提供理论基础与技术支撑。
英文摘要:
      Based on remote sensing data in 1987, 1994, 2001, 2005, 2010 and 2015, landscape patterns changes and their driving forces of the wetland of Qilihai lagoon are analyzed from conversion matrix, dynamic change of wetland ,landscape pattern index principal component analysis with the theory of landscape ecology and the technology of remote sensing and GIS in 1987-2015. Our results show that: the total area of wetland of Qilihai lagoon continues increase in 1987-2001, and it reduces in 2001-2015. The area of natural wetland gradually decreases to 436.66 hm2, a decrease of 74%. The proportion of artificial wetland area increases from 13.83% to 67.92%, and the area increases to 1580.30 hm2. A large area of natural wetlands was changed into paddies and marine farms. The change of the percentage of landscape is large. While the landscape diversity index,evenness index and the landscape heterogeneity decrease. Spread degree and fragmentation increase. And the shape tended to be complex. It is that natural wetlands are transformed into constructed wetlands and the increase of paddies and marine farms were induced by socioeconomic and population. The results can provide scientific basis for ecological environment protection in this area.
高杰.2018.1987-2015年七里海潟湖湿地景观格局变化及驱动力分析[J].水生态学杂志,39(4):8-16.
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