Coverage is an important quantitative index for plant community structure.
盖度或者覆盖度是植物群落结构的一个重要数量指标。
The quantitative index is divided into bigger index value and lesser index value.
定量指标又分为大指标值和小指标值两种。
The quantitative index includes profit ability, debt paying ability, running ability, lasting ability.
其中定量指标包含盈利能力、偿债能力、营运能力、持续增长能力四大类指标；
The protective coefficient and the protective index are the two quantitative parameters for this study.
防护系数与防护指数两个指标就是定量研究指标。
The protective coefficient and the protective index are the two quantitative parameters for this study.
防护系数与防护指数两个指标就是定量研究指标。
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