[Variation Characteristics and Its Driving Forces of Fractional Vegetation Cover in the Shaanxi Section of the Yellow River Basin Under the Background of the Grain for Green Program].
摘要
-values of 0.641 and 0.27, respectively. In particular, the cumulative afforestation area in Guanzhong and northern Shaanxi showed a strong correlation with FVC changes, with correlation coefficients of 0.84 and 0.89, respectively, indicating a positive impact of the Grain for Green Program on increasing vegetation cover. ④ The interactive effects of multiple factors had stronger explanatory power than individual factors, exhibiting either dual-factor enhancement or nonlinear enhancement relationships. The interaction between precipitation and temperature had the greatest influence on the spatial differentiation of FVC across the study area and northern Shaanxi. Meanwhile, the interaction between elevation and land use types dominated the spatial differentiation of FVC in the Guanzhong region. ⑤ Over time, the influence of natural factors on FVC in the study area showed a declining trend, while the influence of anthropogenic factors has gradually increased. Overall, these findings provide important insights for further formulation of ecological protection policies in the Yellow River Basin.