CAJ | 학술논문

选取青海省玉树州隆宝地区9 252 km2范围,1990-2004年15年间遥感影像处理数据资料,采用实证分析法和灰色关联度分析法分析了气候变化尺度下隆宝地区生态环境变化与气候因子间的关联度.得出:隆宝地区生态环境处于明显的不稳定状态,生态类型转化十分明显,最具代表湿地生态类型的湖泊和沼泽面积均呈缩减状态,沼泽缩减速度为487.3 hm2/a.不同生态类型面积变化与气象因子中的气温因子关联度大的有河流、沼泽、灌草过渡带、不宜林草地;与气温、冻土关联度大的是湖泊;与气温、蒸发关联度大的是其他水域;与气温、降水关联度大的是草地和裸岩;与气温、蒸发、冻土关联度大的是永久雪地冰川;与气温、降水、蒸发、冻土关联度都大的是宜林草地和滩涂,只与冻土关联度大的是灌木林生态类型.
선취청해성옥수주륭보지구9 252 km2범위,1990-2004년15년간요감영상처리수거자료,채용실증분석법화회색관련도분석법분석료기후변화척도하륭보지구생태배경변화여기후인자간적관련도.득출:륭보지구생태배경처우명현적불은정상태,생태류형전화십분명현,최구대표습지생태류형적호박화소택면적균정축감상태,소택축감속도위487.3 hm2/a.불동생태류형면적변화여기상인자중적기온인자관련도대적유하류、소택、관초과도대、불의림초지;여기온、동토관련도대적시호박;여기온、증발관련도대적시기타수역;여기온、강수관련도대적시초지화라암;여기온、증발、동토관련도대적시영구설지빙천;여기온、강수、증발、동토관련도도대적시의림초지화탄도,지여동토관련도대적시관목림생태류형.
The study selected the areas of 9 252 km2 in Longbao region of Yushu state in Qinghai and 15 years remote sensing image data from 1990 to 2004. The correlation between changes of ecological environment in Longbao region under the scale of climate change and climate factors was analyzed by means of evidence analysis and gray correlation analysis. The results showed that the ecological environment of Longbao region was in an obvious instable condition, the transformation of ecological types was remarkable, the area of lake and marsh which were the most representative factors of the wetland ecotype had been reduced, and the reducing rate of marsh was 487.3 hm2/a. The area changes of different ecological types such as rivers, marshes, transit area of shrub grassland and unsuitable forest grassland were more correlative with temperature, and lakes were more correlative with temperature and frozen earth, other waters were more correlative with temperature and evaporation, grassland and uncovered rock were more correlative with temperature and precipitation, permanent snow or glaciers were more correlative with temperature, evaporation and frozen earth. The grassland suitable for forestry and shoal were all associated with precipitation, evaporation and the frozen earth. The shrubbery ecotype was only correlative with frozen earth.