carrying-capacity of an ecosystem 生态系统的负荷能力
The urban population capacity, refers to the potential in an ecosystem or a social economy system of a city that can support the population survive.
城市人口容量，指一个城市的生态系统和社会经济系统能够支持多大人口规模得以生存的潜力。
Plant net primary production (NPP) of agriculture vegetation represents the capacity of sequestrating atmospheric CO2 in agro-ecosystem, and plays an important role in terrestrial carbon cycling.
农业植被净初级生产力代表了农田生态系统固定大气co_2的能力，是陆地生态系统碳循环的重要组成部分。
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