Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
Key Lab of Conservation Tillage and Ecological Agriculture, Liaoning Pro-vince, Shenyang 110016, China.
Ying Yong Sheng Tai Xue Bao. 2023 Jul;34(7):1883-1891. doi: 10.13287/j.1001-9332.202307.012.
Scientific evaluating ecosystem service value (ESV) of cover crop cultivation system can provide important guidance for the construction of conservation tillage pattern in Northeast China. Based on empirical analysis and the theory of ecosystem service value, we calculated the ESVs of intercropping maize with gramineous cover crop ryegrass and with leguminous cover crops, alfalfa and hairy vetch, with maize monoculture as the control. The ESVs included product supply, gas regulation, nutrient cycling, and soil and water conservation. Results showed that ESVs of cover crop-maize intercropping were higher than those of maize monoculture. Nutrient cycling value was the highest, followed by product supply value, accounting for 67.3% and 29.3% of total ESV, respectively. The nutrient cycling value of cover crop-maize intercropping was higher than that of maize monoculture. The product supply value of alfalfa-maize and hairy vetch-maize were 18.7% and 21.0% higher than that of ryegrass-maize, respectively. Cover crops had the potential to increase the value of gas regulation services, but had little impact on the value of soil and water conservation. Considering the ESVs, intercropping maize with leguminous cover crops would have the greatest benefits.
科学评估覆盖作物种植系统的生态系统服务价值（ESV）可以为东北地区保护性耕作模式的建设提供重要指导。基于实证分析和生态系统服务价值理论，我们计算了间作玉米与禾本科黑麦草和豆科紫花苜蓿、毛叶苕子与玉米单作的 ESV，以玉米单作为对照。ESV 包括产品供应、气体调节、养分循环以及水土保持。结果表明，间作覆盖作物的 ESV 高于玉米单作。养分循环价值最高，其次是产品供应价值，分别占总 ESV 的 67.3%和 29.3%。间作覆盖作物的养分循环价值高于玉米单作。紫花苜蓿-玉米和毛叶苕子-玉米的产品供应价值分别比黑麦草-玉米高 18.7%和 21.0%。覆盖作物有增加气体调节服务价值的潜力，但对水土保持价值的影响较小。考虑到 ESV，间作豆科覆盖作物将带来最大的效益。
