窟野河地处黄河中游的“几”字湾,是黄河重要水源补给段,其生境质量的好坏关系到流域生态安全和人民福祉。基于GIS技术采用InVEST模型和线性回归分析,揭示窟野河流域2000—2020年土地利用和生境质量的时空演变特征,探究窟野河流域生境质量变化的主要影响因子。结果表明:1)2020年,窟野河流域草地面积较2000年下降了6.60%,林地面积较2000年增加了35.05%。2)2000—2020年,窟野河流域整体以中高等生境质量区为主。生境质量整体提升,部分区域出现生境质量下降。3)2000—2020年,第二产业总产值、工业总产值、年末总人口、景观分离度指数与生境质量指数呈现较为明显的负相关关系,可见窟野河流域产业发展及人类活动对研究区生境质量的下降具有十分显著的影响。

The Kuye River is located in the ‘ji’ bay in the middle reaches of the Yellow River.It is an important water supply section of the Yellow River.The quality of its habitat is related to the ecological security and people's well-being of the basin.Based on GIS technology,InVEST model and linear regression analysis method were used to reveal the spatial and temporal evolution characteristics of land use and habitat quality in Kuye River Basin from 2000 to 2020.The main driving factors of habitat quality change in Kuye River Basin were further explored.The results showed that :1)In 2020,the grassland area of Kuye River Basin decreased by 6.60 % compared with that in 2000,and the forest land area increased by 35.05 % compared with that in 2000.2)From 2000 to 2020,the Kuye River Basin was dominated by areas of medium and high habitat quality.The overall habitat quality was improved,and the habitat quality was reduced in some areas.3)From 2000 to 2020,the total output value of the secondary industry,the total industrial output value,the total population at the end of the year,the landscape separation index and the habitat quality index showed a significant negative correlation.It can be seen that the industrial development and human activities in the Kuye River Basin have a very significant impact on the decline of habitat quality in the study area.