三峡库区防护林不同林分结构森林小气候研究

研究表明：1．中龄林、成熟林对森林小气候影响最大，幼龄林、衰退林影响最小。2．复层混交林＞单层混交林＞单层纯林。并建立了y＝41．3038—9．9219×X_1－0．3002X_2等数学模型。结论：在各林分主要因子中，对森林小气候影响大小排序为：郁闭度＞平均树高＞树冠层厚度等。

The Study on the Forest Minus Climate of Different Protecting Forest Structures in Sanxia Reservior Zone

Factors of the forest minus climate,which are the important to the foresty system,influence the changes of the forest eclogica1 environment and growth of trees,so it is necessary to observe and study them, the paper introduced the different methods of observing the forest minus climate and compared the deviation of various forest structrue's influencement on the forest minus climate,the results were given as follows: 1Middle forests and rippen ones had the most important influencement on them,but the youngth and the dec1ining had the best. 2. Multi-cheories mroed forest>mono theory-mixed forests>mono-theory pure forests.3. By the methods of the aregression,the paper studied the relationship between the major of the forests and the minus climate,one of the modles described as: Y = 4l. 3038- 9. 9219X_1 - 0. 3002X_2. Among the major factors of forests,the important was arranged as:shedness>average hight of tress>the hight of the cocuopy.