In this study, the impacts of land use/land cover (LULC) and climate change on the streamflow and sediment yield were investigated for the Payaswani River Basin, Western Ghats, India. The LULC was determined using Landsat images, and climate data were procured from five general circulation models for representative concentration pathway (RCP) 4.5 (moderate emission) and 8.5 (high emission). The land change modeler was used to derive the future LULC and its changes from 1988 (historical) to 2030 (future) by using the transition matrix method. The SWAT model was used to assess the impacts of LULC and climate change for the streamflow and sediment yield. The results showed that decrease in forests and grasslands and increase in plantation, agricultural, and urban areas from 1988 to 2030 would lead to an increase in the mean streamflow (11.23%) and sediment yield (17.41%). Under RCP 4.5, climate change would decrease the streamflow by 2.38% in 2030. However, under RCP 8.5, climate change would increase the streamflow by 0.12% in 2030. The sediment yield under RCP 4.5 and 8.5 would increase by 1.23% and 3.33%, respectively. In comparison with the baseline condition, by 2030 future changes in the LULC and climate would increase the streamflow by 7.05% and 11.71% under RCP 4.5 and 8.5, respectively. The sediment yield would increase by 7.92% and 27.11% under RCP 4.5 and 8.5, respectively. The streamflow and sediment yield were predicted to increase in the summer and winter but decrease in the monsoon season.

在这项研究中，调查了印度西高止山脉的帕亚斯瓦尼河流域的土地利用/土地覆盖（LULC）和气候变化对河流流量和沉积物产量的影响。利用Landsat图像确定了LULC，并从五个常规循环模型获得了气候数据，分别代表有代表性的浓度途径（RCP）4.5（中等排放量）和8.5（高排放量）。通过转换矩阵方法，使用土地变化建模器得出了未来的土地利用变化量及其从1988年（历史）到2030年（未来）的变化。SWAT模型用于评估流域土地利用变化和气候变化对水流和沉积物产量的影响。结果表明，从1988年到2030年，森林和草原的减少以及种植，农业和城市地区的增加将导致平均流量增加（11。23％）和沉积物产率（17.41％）。在RCP 4.5下，气候变化将在2030年使径流减少2.38％。但是，在RCP 8.5下，气候变化将在2030年使径流增加0.12％。RCP4.5和8.5下的沉积物产量将分别增加1.23％和3.33％ ， 分别。与基准条件相比，到2030年，在RCP 4.5和8.5下，LULC和气候的未来变化将分别使流量增加7.05％和11.71％。在RCP 4.5和8.5下，沉积物产率分别增加7.92％和27.11％。预计夏季和冬季的水流量和泥沙产量会增加，但在季风季节会减少。2030年为12％。RCP4.5和8.5下的沉积物产量将分别增加1.23％和3.33％。与基准条件相比，到2030年，在RCP 4.5和8.5下，LULC和气候的未来变化将分别使流量增加7.05％和11.71％。在RCP 4.5和8.5下，沉积物产率分别增加7.92％和27.11％。预计夏季和冬季的水流量和泥沙产量会增加，但在季风季节会减少。2030年为12％。RCP4.5和8.5下的沉积物产量将分别增加1.23％和3.33％。与基准条件相比，到2030年，在RCP 4.5和8.5下，LULC和气候的未来变化将分别使流量增加7.05％和11.71％。在RCP 4.5和8.5下，沉积物产率分别增加7.92％和27.11％。预计夏季和冬季的水流量和泥沙产量会增加，但在季风季节会减少。