和田河沙漠段生态输水植被恢复遥感评价和植被变化驱动因素分析  

Remote Sensing Evaluation of Vegetation Restoration and Analysis of Driving Factors of Vegetation Change in the Desert Section of Hotan River

作　　者：才仁加甫 曹彪 白云岗 刘旭辉 余其鹰 刘敏杰 Cairenjiapu;CAO Biao;BAI Yungang;LIU Xuhui;YU Qiying;LIU Minjie(Xinjiang Research Institute of Water Resources and Hydropower,Urumqi 830049,China;College of Resources and Environment,Xinjiang Agricultural University,Urumqi,830052,China;School of Water Conservancy Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]新疆水利水电科学研究院,乌鲁木齐830049 [2]新疆农业大学资源与环境学院,乌鲁木齐830052 [3]郑州大学水利科学与工程学院,郑州450001

出　　处：《新疆农业科学》2022年第8期2041-2050,共10页Xinjiang Agricultural Sciences

基　　金：塔里木河流域管理局科研计划(TGJHTJJG-2018KYXM0001);自治区公益性科研院所基本科研业务经费资助项目(KY2021078);新疆水利科技专项(XSKJ-2022-22)。

摘　　要：【目的】结合和田河沙漠段生态输水以来植被变化情况,评价和田河沙漠段治理成效,研究植被变化的驱动因素,为和田河沙漠段生态修复提供指导。【方法】运用卫星遥感影像数据和野外调查资料,对和田河沙漠段生态输水以来植被响应特征指标NDVI值进行系统研究分析。【结果】2002年生态输水以来,和田河沙漠段NDVI值整体提高,平均增幅达37.24%。生态输水对河岸1~2.75 km范围内植被影响显著,年际间NDVI值呈先升高后降低又升高趋势。整个沙漠段植被呈现上、下游较好,中游较差的特点,两河汇合口下游15~115 km为植被脆弱区域。沙漠段NDVI值变化与气温和河段耗水均呈正相关关系。【结论】和田河生态输水促进河道两岸植被的生态恢复,植被变好趋势明显。沙漠段NDVI值变化与气温和河段耗水密切相关,温度升高和上、下游断面水量损耗(生态引水)增加,均有助于和田河沙漠段植被改善。【Objective】To explore the vegetation changes of Hotan River desert section since the ecological water transport,evaluate the governance effect in the desert section,determine the driving factors of vegetation changes in the hope of providing guidance for the ecological restoration of Hotan River desert section.【Method】The NDVI values of vegetation response characteristics since ecological water diversion in the desert section of Hotan River were systematically studied by using the impact data of satellite remote sensing and field investigation data.【Result】Since the ecological water conveyance in 2002,the NDVI value of Hotan River desert section increased as a whole,with an average increase of 37.24%.The ecological water diversion had a significant effect on the vegetation within the range of 1~2.75 km,and the NDVI value increased first,then decreased,and finally increased.The vegetation in the whole desert section was good in the upper and lower reaches,but weak in the middle section.The area with fragile vegetation was located 15~115 km downstream of the confluence of the two rivers.There was a positive correlation between NDVI value and temperature and water consumption in the desert section.【Conclusion】The ecological water conveyance of Hotan River promotes the restoration of ecological vegetation on both banks of the river,and the trend of vegetation improvement is obvious.The change of NDVI value in desert section is closely related to temperature and water consumption in river reach.The increase of temperature and water consumption(ecological water diversion)in the upper and lower reaches of the desert section is conducive to the vegetation improvement in the River.

关 键 词：和田河 生态输水 遥感监测 植被恢复 NDVI 

分 类 号：S-03[农业科学]