The function of improving productivityofecosystem.
提高生态系统生产力的作用;
2
Nitrogen and phosphorus are the necessary mineral nutrition to trees. They determine the growth of individual, the development of community and the productivityofecosystem in the nature.
氮、磷是树木必需的矿质营养,在自然界中它们影响着树木个体的生长、群落的发育及整个生态系统的生产力。
3
The productivity or fertility of such an ecosystem increases as the amount of organic material that can be broken down into nutrients increases.