CAJ | 학술논문

辉河湿地作为内蒙古辉河国家级自然保护区的主体,在维护区域生态平衡方面发挥着极其重要的作用.以辉河湿地为研究区,利用2000～2007年每一年的第97天至第289天的250 m分辨率16天合成的MODIS归一化植被指数(NDVI)数据,以及90 m分辨率的研究区DEM数据,根据典型地物第97天至第289天期间的NDVI变化曲线特征,构建典型湿地地物信息提取模型,对辉河湿地面积进行提取.利用距研究区最近的鄂温克旗气象站2000～2007年的气温、降水量和蒸发量数据,用灰关联分析法分析了湿地面积变化与气候因子的关系.研究结果表明,2000～2007年期间,辉河湿地面积波动变化,2000年辉河湿地面积最大,为651.75 km~2,2006年面积最小,为441.19 km~2;5～9月降水量对辉河湿地面积影响最大,它们之间的灰关联度为0.82,即当地植物生长期的降水量是影响辉河湿地面积变化的主导因子.
휘하습지작위내몽고휘하국가급자연보호구적주체,재유호구역생태평형방면발휘착겁기중요적작용.이휘하습지위연구구,이용2000～2007년매일년적제97천지제289천적250 m분변솔16천합성적MODIS귀일화식피지수(NDVI)수거,이급90 m분변솔적연구구DEM수거,근거전형지물제97천지제289천기간적NDVI변화곡선특정,구건전형습지지물신식제취모형,대휘하습지면적진행제취.이용거연구구최근적악온극기기상참2000～2007년적기온、강수량화증발량수거,용회관련분석법분석료습지면적변화여기후인자적관계.연구결과표명,2000～2007년기간,휘하습지면적파동변화,2000년휘하습지면적최대,위651.75 km~2,2006년면적최소,위441.19 km~2;5～9월강수량대휘하습지면적영향최대,타문지간적회관련도위0.82,즉당지식물생장기적강수량시영향휘하습지면적변화적주도인자.
Huihe weland (48°4′36″N-48°55′29″N,118°47′30″E-119°41′27″E) is located in the southwest part of Hulunbeier, Inner Mongolia. Huihe wetland is the main part of Huihe National Nature Reserve, and playing a very important role in regional ecological balance. However, many researches in Huihe wetland were focus on the diversity survey of vegetation and bird, and few researches using remote sensing technology. In this paper, 16-day composite MODIS NDVI data with 250 m resolution during 97th to 289th day in a year from 2000 to 2007 and DEM data 90 m resolution were used. Based on the NDVI profile of 3 land cover types in Huihe wetland during the period, the extracting model of wetland area was made. The result showed that the largest wetland area occurred in 2000 was 651.75 km~2; and the smallest one in 2006 was 441.19 km~2. the accuracy of the area extraction was evaluated using Landsat ETM+ image, which was 90% in 2000.The gray correlation analysis was used to analyze the relation between the wetland area and May-September precipitation, evaporation and air temperaturedegrees of gray correlation between area and climate factors is. The largest degree of gray correlation occurred between the wetland area and May-September precipitation was 0.82, which meant May-September precipitation was main influence factor on the wetland area.