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通过分析开封沙地试验区农林牧复合生态系统基础资源、发展特点、组成与结构特征,论述了其生物生产、能量流动与物质循环三大功能。结果表明,生物生产性能不断提高,能量流动日趋优化。物质投入、产出比例尚待进一步调整,K素亏缺现象仍然严重。
By analyzing the basic resources, development characteristics, composition and structure characteristics of the agroforestry complex in the experimental area of Kaifeng Sandy Land, the author discusses the three functions of biological production, energy flow and material circulation. The results showed that the performance of biological production is continuously improved and the energy flow is optimized day by day. Material inputs and outputs still need to be further adjusted, and the shortage of K is still serious.