Compared with the natural ecosystems, agroecosystems possess their own special characteristics.
与自然生态系统相比，农业生态系统具有自己的独特性质。
How long can we continue to supplement agroecosystems with energy derived from declining fossil fuel supplies?
由于矿物燃料供应量下降，我们供应农业生态系统能量能持续多久？
Both cluster analysis and correlation analysis were used to study the correlation between the holistic structure and function of the agroecosystems.
采用聚类分析和相关分析相结合的方法，研究了系统整体结构与功能以及结构和功能两两指标间的相关性。
Both cluster analysis and correlation analysis were used to study the correlation between the holistic structure and function of the agroecosystems.
采用聚类分析和相关分析相结合的方法，研究了系统整体结构与功能以及结构和功能两两指标间的相关性。
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