Simulation of soil loss under different climatic conditions and agricultural farming economic benefits: The example of Yulin City on Loess Plateau.

• The SWAT model is used to quantitatively analyze the regional soil and water loss affected by different climate changes. • The evaluation and prediction model of agricultural sustainable planting is constructed in case of Yulin City, China. • With fixed precipitation, the increase and decrease of 5 °C temperature would lead to an extreme change rate of soil loss. • With fixed temperature, the increase and decrease of +20 % precipitation would lead to an extreme change rate of soil loss. • Slope change and crop rotation should be adopted to realize the coordination of soil conservation and agricultural benefits. As different hydrological phenomena caused by different climates have a far-reaching impact on agricultural sustainable development, analysis of the impact of soil erosion on agricultural sustainable planting under different climates was conducted. The SWAT model was used to quantitatively analyze the regional soil and water loss affected by different climate changes. In addition, the evaluation and prediction model of agricultural sustainable planting was constructed with EPIC software, in order to achieve the agricultural sustainable planting by selecting appropriate crops. Based on the analysis of Yulin City in Shaanxi Province, the results showed that: with fixed precipitation, the increase and decrease of 5°C temperature would lead to a change rate of soil loss of -27.78 % and 9.52 % respectively; with fixed temperature, the increase and decrease of +20 % precipitation would lead to a change rate of soil loss of 21.43 % and - 38.10 % respectively. The situation of soil erosion under the slope environment was more serious, and the yield of grain and farming income decreased. It is necessary to choose reasonable planting methods and environmental control policies to reduce the impact of soil erosion on agricultural sustainable planting. Currently, conservation tillage is adopted as the control measure in Yulin. The results of this paper indicated that slope change and crop rotation should be adopted simultaneously to realize the coordination of soil and water conservation and agricultural benefits under the climate change background. [ABSTRACT FROM AUTHOR]