Because of its unique geographical location and ecological function, the Liaohe Delta Wetland is important in maintaining regional ecological balance and security. Monitoring and evaluating changes in the wetland are therefore of great importance. We used medium- and high-resolution satellite data, meteorological station data, and site measurement data to analyze changes in the area and spatial distribution of Phragmites australis and Suaeda salsa in the Liaohe Delta Wetland from 1998 to 2017, as well as their growth response to the climate change. The results showed that during 1998–2017, the areas of both P. australis and S. salsa wetlands alternated through periods of decreasing, increasing, and then decreasing trends. The annual change in the area and spatial distribution range of S. salsa fluctuated more than that of P. australis. The annual variation of normalized difference vegetation index (NDVI) in P. australis wetland showed an upward trend from 1998 to 2017. The area of P. australis cover that was improved, unchanged, and decreased accounted for 81.8%, 12.3%, and 5.9%, respectively, of the total area; evaporation and wind speed were the main meteorological factors affecting the NDVI; and contribution rates of the climate change and human activities to the NDVI were 73.2% and 26.8%, respectively. The area with vegetation cover being mainly S. salsa that was improved, unchanged, and decreased accounted for 63.3%, 18.3%, and 18.4%, respectively, of the total area; and no meteorological factors significantly affected the NDVI of S. salsa in the region. The interaction between vegetation growth and meteorological factors may help to explain the increasing trend in vegetation cover. The improvement in wetland vegetation also led to carbon sequestration and an increase in sequestration capacity.

辽河三角洲湿地由于其独特的地理位置和生态功能，对于维护区域生态平衡和安全至关重要。因此，监测和评估湿地的变化非常重要。我们使用中高分辨率卫星数据，气象台站数据和站点测量数据来分析1998年至2017年辽河三角洲湿地芦苇和小翅目芦苇的面积和空间分布变化及其增长响应应对气候变化。结果表明，在1998-2017年期间，南极假单胞菌和萨尔萨假单胞菌的面积湿地交替经历了由低到高的趋势。莎莎沙棘的面积和空间分布范围的年度变化比澳大利亚假单胞菌的波动更大。归一化植被指数（NDVI）在年变化芦苇湿地呈上升趋势从1998年到2017年的面积芦苇即得到改善，不变盖，和降低的占81.8％，12.3％，和5.9占总面积的百分比；蒸发和风速是影响NDVI的主要气象因素。气候变化和人类活动对NDVI的贡献率分别为73.2％和26.8％。植被覆盖的地区主要是改良，不变和减少的沙门氏菌分别占总面积的63.3％，18.3％和18.4％。而且没有气象因素显着影响该地区莎莎沙门氏菌的NDVI 。植被生长与气象因素之间的相互作用可能有助于解释植被覆盖率的增加趋势。湿地植被的改善也导致了碳固存和固碳能力的提高。