| 苏北侵蚀型海岸湿地景观时空演变特征及驱动机制 |
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| 引用本文： | 张华兵,刘红玉,郝敬锋.苏北侵蚀型海岸湿地景观时空演变特征及驱动机制[J].生态与农村环境学报,2011,27(4). |
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| 作者姓名： | 张华兵 刘红玉 郝敬锋 |
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| 作者单位： | 1. 南京师范大学地理科学学院,江苏南京210046;盐城师范学院城市与资源环境学院,江苏盐城224002
2. 南京师范大学地理科学学院,江苏南京,210046 |
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| 基金项目： | 国家自然科学基金(41071119); 江苏省高校自然科学研究重大项目(10KJA170029); 江苏省哲学社会科学基金重点项目(07EYA039) |
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| 摘 要： | 运用RS、GIS技术和景观生态学方法,对盐城国家级自然保护区侵蚀型海岸湿地1987、1997和2007年3个时相的景观数据进行分析,辨识侵蚀型海岸湿地景观格局时空演变特征。结果表明,1987—1997年,研究区光滩面积比例由76.91%下降至58.37%,碱蓬湿地由18.68%下降至5.51%,芦苇湿地由4.42%上升至13.01%,并出现了米草湿地和养殖池景观类型,1997年其面积比例分别为13.35%和9.76%。1997—2007年,碱蓬湿地退化消失,养殖池减少,芦苇湿地、米草湿地、光滩面积增加,其比例分别为15.85%、14.50%和60.86%。就景观异质性而言,多样性指数先升后降,景观优势度持续下降。景观空间演替呈现单向性特征:1987—1997年,从陆地向海洋方向演替;1997—2007年,从海洋向陆地方向演替。海岸地貌过程和植物覆被类型的连续变化导致湿地景观演变呈连续变化,但干扰往往使生态过程的连续性发生改变。
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| 关 键 词： | 海岸湿地 侵蚀海岸 景观格局 驱动力 盐城自然保护区 |
Temporal-Spatial Variation of Erosional Coastal Wetland Landscape in North Jiangsu and Its Driving Forces |
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| ZHANG Hua-bing,LIU Hong-yu,HAO Jing-feng.Temporal-Spatial Variation of Erosional Coastal Wetland Landscape in North Jiangsu and Its Driving Forces[J].Journal of Ecology and Rural Environment,2011,27(4). |
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| Authors: | ZHANG Hua-bing LIU Hong-yu HAO Jing-feng |
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| Institution: | ZHANG Hua-bing1,2,LIU Hong-yu1,HAO Jing-feng1(1.College of Geography,Nanjing Normal University,Nanjing 210046,China,2.College of Urban and Resource Environment,Yancheng Teachers University,Yancheng 224002,China) |
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| Abstract: | With the aid of the technologies of RS,GIS and landscape ecology,landscape data of the erosional coastal wetland of Yancheng Nature Reserve in 1987,1997 and 2007 were analyzed to characterize spatial-temporal variation of erosional coastal wetland landscape.It was found that during the period from 1987 to 1997,the area of bare shoals decreased from 76.91% to 58.37% in proportion and that of salsa wetlands from 18.68% to 5.51%,while that of reed wetlands increased from 4.42% to 13.01%,and that of spartina we... |
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| Keywords: | costal wetland erosional coast landscape pattern driving force Yancheng Nature Reserve |
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