A healthy ecosystem means that it can exert function normally and realize the best services of ecosystem.
健康的生态系统意味着生态系统能正常发挥功能，实现生态系统的最佳服务。
Rivers in urban area are characterized themselves by special landscape ecological function, and can provide with important ecosystem services.
城市河流具有特殊的景观生态学意义，并能提供重要的生态系统服务，其价值逐渐受到社会各界的广泛关注。
Rivers in urban area are characterized themselves by special landscape ecological function, and can provide with important ecosystem services.
城市河流具有特殊的景观生态学意义，并能提供重要的生态系统服务，其价值逐渐受到社会各界的广泛关注。
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