农业生产不仅要提高生态系统服务的产品功能，更要恢复和维持其各种维持生命的间接服务功能。
Agricultural production should not only improve production services of agroecosystem, but also restore or maintain its indirect services.
生态系统服务功能的内涵，是指生态系统过程所形成与维持的人类赖以生存的自然环境条件与效用。
The intension of ecosystem services is the effectiveness and the natural ambient conditions of human survivable necessary formed and maintained during the course of the development of ecosystem.
土地利用政策评价在保护、维持生态系统服务功能价值方面起到了积极的作用。
The expansion of cities, towns and roads were the main causes of the values' decrease. Despite this aspect, the land-use policies are positive in protection and maintain the balance of ecosystem.
土地利用政策评价在保护、维持生态系统服务功能价值方面起到了积极的作用。
The expansion of cities, towns and roads were the main causes of the values' decrease. Despite this aspect, the land-use policies are positive in protection and maintain the balance of ecosystem.
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