文献类型：期刊文献

中文题名：近十五年来东北地区沼泽湿地变化研究

英文题名：Study on Land Use and Land Cover Change of Marsh Landscape in Northeast China in Last 15 years

作者：陈静[1];张树文[2];张养贞[2]

第一作者：陈静

机构：[1]北京联合大学应用文理学院;[2]中国科学院东北地理与农业生态研究所

第一机构：北京联合大学应用文理学院

年份：2009

卷号：38

期号：1

起止页码：85-91

中文期刊名：内蒙古师范大学学报：自然科学汉文版

收录：CSTPCD

语种：中文

中文关键词：景观生态学;景观类型;斑块;时空动态变化;沼泽湿地;东北地区

外文关键词：landscape ecology theories; landscape type; patches; spatial-temporal variation; marsh; Northeast China

摘要：以RS和GIS为技术平台,以LCS为指导理念,应用景观生态学的理论和方法,定量分析和研究1986-2000年东北地区沼泽湿地动态变化及其时空分布特征.对东北地区沼泽湿地的时空动态变化程度、变化方向、变化形式以及景观格局变化和景观转化特征进行分析,结果表明:1986-2000年以来,东北地区沼泽湿地总面积呈下降趋势,后5年年均缩减速率是前10年的28倍;景观动态变化方面,前10年沼泽湿地景观斑块变化剧烈,后5年变化相对平缓;15年间沼泽斑块数总体呈减少趋势,但沼泽景观破碎度不断上升,斑块的形状变得越来越不规则,边界扩散程度加强,斑块越来越复杂.沼泽景观转化特征分析表明,沼泽湿地土地利用方式不当和研究区气候变干旱,是沼泽面积减少的主要原因.而沼泽景观扩张的主要因素也是气候变干,使部分湖泊退化为沼泽;洪水淹没了部分草地并使部分河水漫过河道,是导致沼泽景观扩张的另一原因.沼泽景观在收缩与扩张双驱力的影响下,形成独特的景观空间格局.
According to the LCS directing idea, by employing the methods and theories of landscape ecology and based on the remote sensing and GIS technique, the dynamic change of marsh in Northeast China is analyzed by quantification. Through researching on the LUCC degree, direction, and the transforming relationship between the major landscape types and its related land cover types, the spatial- temporal variation pattern of marsh landscape from 1986 to 2000 is studied. The research shows the general dynamic trend of marsh in Northeast China,i. e. ,the area has been reducing, and the average reduced rate of the last five years is 28 times as fast as that before 10 year＇s. The variation of the landscape patches in the first 10 years was more tempestuous than that in the last 5 years. Although the amount of the patches was declined, the fragmentation degree was rising, and the shape of the patches was more and more irregular. From the analysis on marsh landscape transformation, we gained the result that the area of marsh conversed into dry land was biggest,that was to say,the most important reason in the reduction of marsh area was mankind reclamation. Secondly, because the climate had been becoming dryer and dryer, some marsh deteriorated to lawn,and it played the unnegleetable role in the marsh reduction. In addition,it was evidence to the conversion from lake to marsh that the climate was becoming dryer.