| 1982-2012年南四湖自然水域演化分析 |
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| 引用本文： | 吕方,杜婷,杨俊,席建超,李雪铭.1982-2012年南四湖自然水域演化分析[J].资源科学,2014,36(4):848-855. |
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| 作者姓名： | 吕方 杜婷 杨俊 席建超 李雪铭 |
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| 作者单位： | 自然地理与空间信息科学辽宁省重点实验室, 大连116029;自然地理与空间信息科学辽宁省重点实验室, 大连116029;自然地理与空间信息科学辽宁省重点实验室, 大连116029;中国科学院地理科学与资源研究所, 北京100101;中国科学院地理科学与资源研究所, 北京100101;自然地理与空间信息科学辽宁省重点实验室, 大连116029 |
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| 基金项目： | 国家科技部支撑计划：“南四湖核心区生态带构建技术及示范——南四湖核心区生态系统评估与演变趋势研究”（编号：2012BAC04B00）。 |
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| 摘 要： | 湖泊水域的动态变化对湖泊水资源开发、湖泊生态环境保护以及洪涝灾害预报具有重要的指导意义。近年来南四湖自然水域面积变化剧烈,并引发了一系列生态环境问题。基于山东省南四湖多时序遥感与土地利用数据,运用遥感和GIS技术,采用GIS空间分析的方法,选取湖泊水域变化幅度、湖泊分形维数变化指数、湖泊变化强度指数和土地利用转移矩阵等因子,对南四湖30年的自然水域面积变化和形态变化特征进行分析,在此基础上探讨南四湖自然水域和其他土地利用类型的转移变化特点;最后对引起自然水域面积变化的机制进行了分析。研究结果表明:①南四湖自然水域30年间面积共减小529.02km2,减少了44.45%,年平均减小量为17.63km2;②研究时段内,景观分形维数呈先下降后上升的趋势;其中,1982-1992年自然水域景观分形维数呈下降趋势,而1992-2002年,2002-2012年景观分形维数呈上升趋势,说明在研究时段内1982-1992年人类活动对南四湖自然水域的影响相对于1992-2012年较大;③总体上,自然水域变化强度呈先增大后减小的趋势,其中河流在2002-2012年,1992-2002年两个时段变化强度数为整正数,水域减小趋势得到了一定程度的控制;④研究时段内南四湖自然水域主要转换为农用地,其次为建设用地,说明人类活动和城市经济的发展对自然水域的影响较大。
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| 关 键 词： | 自然水域 演化 南四湖 |
Evolutionary Analysis of Nansihu Lake Natural Water Area from 1982 to 2012 |
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| LV Fang,DU Ting,YANG Jun,XI Jianchao and LI Xueming.Evolutionary Analysis of Nansihu Lake Natural Water Area from 1982 to 2012[J].Resources Science,2014,36(4):848-855. |
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| Authors: | LV Fang DU Ting YANG Jun XI Jianchao and LI Xueming |
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| Institution: | Liaoning Key Laboratory of Physical Geography and Geomatics, Dalian 116029, China;Liaoning Key Laboratory of Physical Geography and Geomatics, Dalian 116029, China;Liaoning Key Laboratory of Physical Geography and Geomatics, Dalian 116029, China;Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;Liaoning Key Laboratory of Physical Geography and Geomatics, Dalian 116029, China |
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| Abstract: | Dynamic changes in water have an important effect on the exploitation of water resources, ecological environmental protection and flood disaster prediction. A series of ecoenvironment problems have arisen from changes in water in Nansihu, Shandong. Supported by remote sensing and GIS, using multi-temporal TM images for 1982, 1992, 2002, 2009 and 2012 in Nansihu, we selected indices including the lake varying intensity index, lake fractal dimension index and transfer matrix of land use to analyze changes in lakes and lake morphology. We found that the lakes of Nansihu decreased by 529.02km2 from 1982 to 2012; the annual average was 17.63km2. From 1982 to 2012, the Fractal Dimension underwent major change and the Fractal Dimension of Nature Lake decreased from 1982 to 1992. This suggests that lake shape is simple and the effect of human activities is intense. From 1992 to 2012 the fractal Dimension increased, meaning that the effect of human activity is smaller and lake shape is complex. On the whole, the Intensity Index of nature Lake Evolution was negative from 1992 to 2012, and the decrease was controlled; while the intensity index of a few lakes'evolution is positive from 1982 to 1992. From 1982 to 2012, the water area of lakes was mainly transferred into farmland and the land of construction. |
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| Keywords: | natural water area lake evolution Nansihu Lake |
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