图1. 龙羊峡库区周围景观格局及输沙通道分布（A：流沙区输沙通道分布，Ⅰ—Ⅹ代表流沙区；B和C为不同区域的沙源，其中B为二塔拉分布的沙丘，C为三塔拉的巨型风蚀坑；D为卫星监测的沙尘暴（2021年1月10日）；E和F为风沙入库现状（2020年8月）。库区东南侧（木格滩）分布有连片的沙丘，沙丘发育更成熟，而库区西北侧（塔拉滩）沙丘呈现不连续分布，发育程度轻，沙丘高度低）

Fig.1. Landscape and sand transport corridors around Longyangxia Reservoir （A： The sand transport corridors of major sand areas， and Ⅰ—Ⅹ represent the different sandy land areas. Figure B and C represent the sand source in different area， figure B shows the dune in ErTala， figure C represents the mega-blowout in SanTala； Figure D represents the sand storm monitored by satellite； Figure E and F are the current situation of sand transported into the reservoir. In the southeast side of the reservoir area （Mugetan sandy-land）， continuous dunes are distributed， which are more mature， while in the northwest side of the reservoir area （Talatan sandy-land）， dunes are scattered， lightly developed and with low dune height）