04-12-2013 дата публикации
Номер: CN103425869A
Принадлежит:
The invention provides a method for acquiring a basin coverage rate for water conversation. The method includes the steps: 1) according to four stand types, including coniferous forest, broad-leaved forest, mixed broadleaf-conifer forest and shrubbery, of a basin forest, measuring area, canopy interception rate, saturated soil water-holding capacity and the like of each stand type; 2) superposing according to respective weights to acquire coverage area, capable of realizing water conservation, of one stand type, and determining a coverage rate of each stand for water conservation; 3) fitting to acquire a basin coverage rate used for water conservation. According to the method, the forest coverage rate of a basin for water conservation is obtained by combination of years' precipitation data of the studied basin according to forest area and forest types of a surface water basin, under the guidance of the coverage rate, reasonable planning and purposeful afforestation or deforestation are ...
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