因需要对2003-2024年渭河流域进行数据分析并且进行归因

Paper title：Sensitivity Analysis of Remote Sensing Vegetation Index to Phenological Characteristics of Northern Vegetation: A Case Study in the Northern Foothills of Qinling Mountains (China) Paper abstract：Vegetation plays an important role in the exchange of heat and moisture in the earth-atmosphere system, and the vegetation index can not only better measure the growth and changes of vegetation, but also provides required data for meteorological, hydrological, ecological and other studies. Therefore, in-depth study of the spatial and temporal changes in regional vegetation index is of great significance for guiding eco-logical environment protection and governance. This paper takes the northern foothills of the Qinling Mountains and its north area in Shaanxi as the research object, focuses on comparing the applicability of normalized vegetation index (NDVI) derived from Sentinel-2, Landsat, and MODIS for extracting vegetation phenological characteristics. Furthermore, linear regression slope analysis and partial correlation methods are em-ployed to analyze and discuss the spatiotemporal distribution characteristics and in-fluencing factors of NDVI at different time scales. The results show that: 1) Sentinel-2 and MODIS data exhibit better spatiotemporal consistency than Landsat in obtaining monthly NDVI and capturing vegetation phenological characteristics, owing to the higher spatial resolution of Sentinel-2 and the superior temporal resolution and conti-nuity of MODIS ; 2) NDVI at different time scales in the study area showed a signifi-cant upward trend during 2001-2023, with a large NDVI increase mainly concentrated in the eastern part of the study area, especially in the Lishan Mountain area, while the areas with a decrease or no significant change in NDVI are mainly urban areas where human life and production are relatively frequent; 3) The NDVI in most areas of the study area showed an increasing trend from 2019 to 2023, especially in the Lishan Mountain area within the ecological protection and restoration project area, but there was a large area of NDVI decrease in the western part of the Qinling mountain front flood plain; 4) The lagging effects of precipitation and air temperature on monthly NDVI are both positive in a short period of time. Meanwhile, in spring and monthly scales, precipitation and air temperature have a positive correlation with vegetation growth in the study area, and the influence of air temperature is more significant. Paper type：期刊论文 Tutor 张渊智

为完成课题核心研究目标，需获取目标数据开展实证分析（如模型训练、变量验证、对比实验），确保研究结论的客观性、准确性及学术严谨性。

Paper title：基于XGBoost-SHAP的渭河流域三生空间生态风险耦合协调及驱动机制分析 Paper abstract：暂无 Paper type：期刊论文 Tutor 导师姓名：周秋文

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画渭河流域的径流掩膜图，需要渭河流域边界信息

论文题目： 数据在研究中的作用： 论文类型： 导师姓名：

学习一下渭河流域是否涉及定西市安定区和陇南市的宕昌县

论文题目：渭河流域旅游廊道构建 数据在研究中的作用：基础数据用于研究区范围制作 论文类型：学位论文 导师姓名：韩超

教学使用，用于制作研究区背景介绍图，是学生了解研究区概况