藏东紫曲河湿地变化及其气候条件分析  

Analysis of wetland changes and its climatic conditions in Ziqu River,the eastern Xizang

作　　者：玉洛 顿玉多吉 西绕卓玛 次仁桑姆 Yuluo;Dunyu Duoji;Xirao Zhuoma;Ciren Sangmu(Meteorological Bureau of Changdu,Changdu 854000,China;Xizang Climate Center,Lhasa 850000,China)

机构地区：[1]西藏昌都市气象局,昌都854000 [2]西藏自治区气候中心,拉萨850000

出　　处：《西藏科技》2024年第8期43-48,共6页Xizang Science And Technology

基　　金：第二次青藏高原综合科学考察研究项目(2019QZKK0304);第二次青藏高原综合科学考察研究项目(2019QZKK0106)。

摘　　要：湿地作为我国重要的国土资源和自然资源,是地球最重要的生态系统之一。文章利用2015、2021年卫星遥感影像数据和类乌齐近40年气象资料,对紫曲河湿地面积变化和气候变化进行了分析。结果表明:近40年来紫曲河湿地区域气温上升、降水增多,整体呈暖湿化趋势;遥感影响分析表明,2021年紫曲河湿地草本沼泽面积较2015年增加0.48 km^(2),河流面积增加0.28 km^(2),泥潭/滩涂面积减少0.89 km^(2),湿地面积总体呈增大趋势,其中,非湿地转变为泥潭、草本等湿地的面积增加趋势明显。气候暖湿化与湿地面积变化的相关性分析表明,年降水量对木本沼泽、泥潭/滩涂湿地的面积变化影响较大,年平均气温及年平均最高气温对草本沼泽湿地和河流湿地的面积变化有着较大影响,均呈正相关;年平均最低气温对泥潭/滩涂湿地的面积变化有着较大影响,呈负相关。As an important land resource and natural resource,wetlands are one of the most important ecosystems on earth.This paper applies the satellite remote sensing image data in 2015 and 2021,and the meteorological data of Ziqu in the past 40 years for the analysis of the area change and climate change of Ziqu wetland.The results show that the temperature and precipitation in the Ziqu River wetland area have increased in the past 40 years and the overall trend has been warm and humid.Remote sensing impact analysis show that in 2021,the area of herbaceous swamps in Ziqu River wetland increased by 0.48km^(2),the area of rivers increased by 0.28km^(2),and the area of marsh/tidal flats decreased by 0.89km^(2)compared with 2015.Overall,the area of wetlands appears to be an increasing trend,and the area of non-wetlands converted into quagmire and herbaceous wetlands increase significantly.The correlation analysis between climate warming and humidification and the area change of wetland show that the annual precipitation had a greater influence on the area change of woody swamp and quagmire/mudflat wetland,and the average annual temperature and average annual maximum temperature had a greater influence on the area change of herbaceous swamp wetland and river wetland,both of which were positively correlated,while the average annual minimum temperature had a greater impact on the area change of quagmire/mudflat wetland,which was negatively correlated.

关 键 词：紫曲河湿地 湿地变化 暖湿化 相关性分析 

分 类 号：P467[天文地球—大气科学及气象学]