Leaf area index (LAI) is not only an important attribute of land surface vegetation system, but also a key parameter for the models of global water balancing and carbon circulation.
叶面积指数LAI不仅是陆表植被系统的一个重要属性，而且是全球水平衡、碳循环等模型中的重要输入参数。
Therefore, a new kind afforestation budgetary method that takes the multiple parameter m as the index is put forward by the characteristics of city ecological system.
为此，根据城市生态系统的特点提出了一种新的以综合参数M为指标的绿化概算方法。
The parameter index of the DSP chips is the bottleneck of improving the system performance.
DSP芯片的参数指标制约着系统性能的提高。
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