金佛山方竹林水源涵养功能的初步研究

金佛山方竹(Chimonbambusa utilis)不仅是材、笋两用竹种,而且是涵养水源,保持水土的优良竹种,但以往缺乏这方面的研究,为了较系统地揭示方竹蓄水保土的功能。本次对金佛山方竹的林冠层、枯枝落叶层、土壤层的蓄水保土功能加以调查;同时为了便于比较还结合调查其它的林分。通过研究其结果: 1.林冠截留量: 方竹>针叶混交林>针叶纯林 2.枯枝落叶层蓄水量亮叶水青冈—方竹林>方竹林>针叶混交林>针叶林 3.土壤层的蓄水功能方竹林>亮叶水青冈—方竹林>马尾松林>枫香×麻栎林从而,本研究将为防护林建设中重视竹子的功能与作用,为适地适竹,合理选择与配置树种提供较可靠的依据。

PRELIMINIARY STUDY ON THE FUNCTION OF WATER AND SOIL CONSERVATION OF CHIMONOBAMBUSA UTILIS FOREST

Chimonobambusa utilis, one of the main economic species of bamboo in southwest region of china, not only is exploited with its timber and shoot but also is functioned with water and soil conservation. But few studies of this bamboo were found in china. In order to systematically know its function of water and soil conser- vation and ecological potenliality on the construction of shelter forest investigations of canopy, Litter and Soil layer were invest- igated, meanwhile, other forests also weredone for control. Some results were obtained: 1. Water-interception of canopy; Ch. utilis forest>mixed coniferous forest > pure coniferous forest; 2. Water-holding capacity of litter: Fagus-Ch. utilis mixed forest > Ch. utilis forest> mixed coniferous forest> pure coniferous forest; 3. Water-holding capaeity of soil layer: Ch. utilis forest >Fagus-Ch. utilis forest> Masson pine forest>Liguidambar- Quercus mixed forest. It showed that the functions of the bamboo should be emphasized in establishing shelterbelt forests, and provided the scientific basis for selecting proper bamboo or tree species on the best sites.