Mixed tree systems

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  • Tham khảo sách 'committee on sustainable agriculture and the environment in the humid tropics', khoa học tự nhiên, công nghệ môi trường phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf720p japet75 30-01-2013 29 5   Download

  • The surface texture of the wax paintings and the mummy sculptures is similar. The gauze only becomes visible intermittently, the plaster on top of it having much the same appearance as wax. The various patinating agents, brown, green, red, white and black mix together to form an undulating surface, something like the bark of a tree which invites the onlooker to touch. Marie, Vito and Balzac are the foundation that many of the later sculptures are built on.

    pdf19p yasuyidol 01-04-2013 18 4   Download

  • The World Agroforestry Centre has classified rubber-based systems in Indonesia according to their intensity of management, as illustrated by the photographs on the opposite page. Intensively-managed monoculture rubber plantations contain less than 1% non-rubber trees, none of which have been planted deliberately. Simple mixed rubber agroforests contain up to one-third non-rubber trees, which have been deliberately planted or retained, between five and 20 non-rubber species greater than 2 m in height and 5–20 non-rubber trees as tall as, or taller than, the rubber trees.

    pdf42p thieubaotrang 23-04-2013 18 2   Download

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