洱海流域不同种植模式稻田生态系统服务价值评估.

Field experiments were conducted to study the service function value of rice field ecosystems with different planting patterns. Using Y - OL（70% chemical fertilizer + 30% cow manure-rice-Lolium multiflorum Lamk.）, Y-OV（70% chemical fertilizer + 30% cow manure-rice-Vicia villosa Rothvar）, and Y-ON（70% chemical fertilizer +30% cow manure-rice-winter fallow）, three rotation treatments were conducted, and conventional fertilization and tillage mode C-ON（100% chemical fertilizer-rice-winter fallow）were used as the control. The functional value evaluation method and equivalent factor method were combined to estimate the service function value of the rice field ecosystem. Results showed that the service function values of the rice field ecosystem services in the Y-OL and Y-OV treatments were 169 669 yuan·hm-2 and 168 405 yuan·hm-2, respectively; the Y-ON and C-ON treatments yielded 99 247 yuan·hm-2 and 72 717 yuan·hm-2, respectively. The processing value of the Y-OL and Y-OV functions was significantly higher than that of Y-ON and C-ON, and the total value of the Y-ON processing service function was significantly higher than that of the C-ON processing（P<0.05）. Among them, the economic values of agricultural products, gas regulation, waste absorption, water purification, soil organic matter accumulation, nutrient recycling, biodiversity, and aesthetic landscapes of optimized fertilization and rotation were significantly higher than those of the conventional fertilization method（P<0.05）. In the optimized fertilization rotation, the water purification and nutrient cycle values of the rice-Vicia villosa Rothvar rotation were significantly higher than those of the rice-Lolium multiflorum Lamk. rotation（P<0.05）. In summary, 70% chemical fertilizer + 30% cow manure-rice-Lolium multiflorum Lamk and 70% chemical fertilizer + 30% cow manurerice-Vicia villosa Rothvar could effectively improve the functional service value of the rice field ecosystem, with the 70% chemical fertilizer+ 30% cow manure-rice-Vicia villosa Rothvar demonstrating a better effect. [ABSTRACT FROM AUTHOR]