Investigations on tree species suitable for the recultivation of degraded land areas in Central Amazonia.

In cooperation with the Embrapa Amazonia Ocidental in Manaus (Amazonas, Brasil) and three German projects (ENV 23, ENV 45, ENV 52), in the year 2000 we especially investigated (1) photosynthesis and carbohydrate allocation and (2) the plant-water relationships of the selected tree species. Special emphasis was given to the three species of the family Meliaceae. Comparative experiments have been done for monoculture, polycultures, enrichment cultures, and primary forests.bitstream/item/198164/1/Id-6216-todo.pdfAnnual Report 2000

Investigations on tree species suitable for the recultivation of degraded land areas in Central Amazonia.

Project activities in 1999, in Manaus-AM(Brasil): water supply of the trees, carbohydrate supply of the trees, seed provenances, wood quality. After five years of experiments the investigations (1) the biomass production and nutrition of five plantation grown tree species, (2) the comparison of nutrient fluxes and grwoth dynamics of Carapa guianensis grown in monoculture and enrichment plantations, and (3) the study of cambial growth dynamics of three selected Meliaceae were terminated. In 1999 the data evaluation was carried out.bitstream/item/198184/1/Id-5276-todo.pdfAnnual Report 1999. Cooperation: Dr. Reissmann, E. Neves