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当前位置: 首页 > 文章 > 三江平原挠力河流域湿地垦殖的影响因素 东北林业大学学报 2011,39 (1) 74-76
Position: Home > Articles > Influence Factors of Wetland Cultivation in Naoli River Watershed of Sanjiang Plain Journal of Northeast Forestry University 2011,39 (1) 74-76

三江平原挠力河流域湿地垦殖的影响因素

作  者：
姚允龙;吕宪国;于洪贤;王蕾
单  位：
中国科学院湿地生态与环境重点实验室;东北林业大学
关键词：
三江平原;挠力河;湿地;垦殖;地形;地貌
摘  要：
综合利用DEM数据、地貌数据和1954—2000年5个时段的土地利用/覆被数据,分析了该流域近50a来的湿地垦殖过程及其影响因素,结果发现:2000年的沼泽湿地面积仅为1954年面积的36.7%,而且80%左右的沼泽湿地都开垦为耕地。自然环境要素与农场建设对整个湿地的开垦过程产生了重要影响。分布于不同海拔高度与不同坡度上的沼泽湿地被开垦为不同土地利用类型,其规律为:林地>居民地>耕地>草地>水域;从地貌特征来看,湿地开垦过程遵循由高河漫滩到河流阶地,再到低河漫滩的过程;从农场建设的角度来看,1954—1995年期间,湿地开垦距农场的距离逐渐增大,1995—2000年期间主要集中对农场周边残留湿地的蚕食。
译  名：
Influence Factors of Wetland Cultivation in Naoli River Watershed of Sanjiang Plain
作  者：
Yao Yunlong,Lü Xianguo(Key Laboratory of Wetland Ecology and Environment,Chinese Academy of Sciences,Changchun 130012,P.R.China);Yu Hongxian(Northeast Forestry University);Wang Lei(Key Laboratory of Wetland Ecology and Environment,Chinese Academy of Sciences)
关键词：
Sanjiang plain,Naoli river,Wetlands;Cultivation,Topography;Topography;Physiognomy
摘  要：
Wetland cultivation and its influence factors in Naoli River watershed,a typical region in Sanjiang Plain,were analyzed by DEM data,relief data and data of land use and land cover for five periods of time from 1954 to 2000 obtained by RS/GIS technology.Results showed that the area of wetland in 2000 reduced to 36.7% of the original size in 1954,and nearly 80% of the area was turned into cropland.Natural environmental factors and the construction of farms had important impacts on the wetland cultivation process.The wetland distributed at different altitudes and different slope gradients were cultivated to different land use types.Forest land was distributed on the slope with highest slope gradients,followed by residential land,cultivated land,grassland and water body.As viewed from geomorphological features,wetland cultivation abided by a process from high alluvial flat to river terrace,and then to low alluvial flat.From the perspective of the farm construction,the distance between the cultivated wetlands and the farms gradually increased over the period of 1954-1995,and wetland encroachment focused on the surrounding of farms over the period of 1995-2000.

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