Assessment of ecological water transfer benefits in the Hotan River Basin,Xinjiang
Carrying out an assessment of the benefits of ecological water transfer is of great significance in guiding the fine management and efficient use of water resources and precise ecological restoration. The paper objectively assessed the ecological water transfer benefits of the Hotan River Basin over the past five years based on data from vegetation surveys and remote sensing monitoring,and the results showed that:Ecological water transfers flooded and irrigated 288 700 acres,affecting 384 000 acres;Calculations based on GRACE gravity satellite data yielded an increase in groundwater storage of more than 20 mm;A large number of poplar seedlings have sprouted,the age structure of the stand has been optimized,individual growth has improved and vegetation cover has increased;The remotely sensed ecological index,RSEI,improved by 41. 18％,with a decrease of 29 490 acres(12. 69％ )in areas with poor ecological class status and an increase of 200 acres(65. 89％ )in areas with excellent ecological class status;There are problems in the ecological water transfer process,such as imperfect monitoring and evaluation system and imprecise targeting of water transfer. The results of the research provide important guidance for directing the precise and scientific work of ecological water delivery in arid zones,as well as for carrying out ecological restoration benefit assessment in similar areas.
water resourcesHotan River Basinecological water transfermonitoring and assessment
万方数据
维普
