“freshwater ecosystem productivity”的概念、定义、翻译、参考文献-科学参考

单词	freshwater ecosystem productivity
释义	freshwater ecosystem productivity Encyclopedia 理学淡水生态系统生产力释 freshwater ecosystem productivity淡水生态系统生产力有广义和狭义之分。从广义上讲，是指淡水水体中所有生物的总生产能力，而不是仅局限于对人类有价值的所谓经济产物；狭义上来说，是指淡水水体中能满足有经济价值的生物生长、发育、繁殖的性能，水体中生产的经济产品越多，则其生产力越高。淡水生态系统生产力的大小，不仅与水体理化特性（如肥沃程度）有关，也与其中生物组成及人类的经济活动有关。
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