Abstract
The importance of spontaneous lac host-trees for preserving the fragile agroecosystem of the main lac producing areas of China, located in the tropical part of Yunnan province, is analyzed. In upland fields, the fire-resistant vegetation consists mainly of these trees. Farmers deliberately preserve young sprouts during the cultivation cycle. This benefits both soil fertility and lac production. Host-trees, mainly Dalbergia and Ficus, form a range of multipurpose trees which although limited to some ten species allows maximum use of the heterogeneities of the village territory. Finally, lac host-trees are associated with some environmental values important to farmers. This circumstance contributes to the sustainability of lac host-tree agroforestry in spite of current problems in the lac market.
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