蒙古栎林生态系统的辐射能量与水分关系的研究  

Studies on the Relationship between Radiate Energy and Water in Oak Forest.

作　　者：魏晓华[1] 王业蘧[2] 

机构地区：[1]江西省政府山江湖开发治理办公室,南昌330046 [2]东北林业大学林学系,哈尔滨150040

出　　处：《农村生态环境》1993年第3期5-8,12,共5页Rural Eco-Environment

摘　　要：本文把水分循环与辐射能量转换两个功能过程结合起来,研究蒙古栎林生态系统中的辐射能量与水分的关系。结果表明,森林作用层与林地作用层由于获得不同待征的辐射能量,导致水分交换的数量与方向不同。约74.5％的净辐射用于森林的水分蒸发散,而蒸发散又占降雨量77.45％。可见,辐射能量的大部分用于水分循环。本文还研究了辐射能量对融雪过程的影响,发现针阔混交林在冬季由于具有获得适度辐射能量的特点,使得它是一种较理想的融雪径流产流模式,为合理经营森林提供了依据。The relationship between radiation and water in oak forest was studied with the combination of water cycling and radiation energy transfer processes. The results show that water movement direction and water-exchanging quantities are varied with different radiations in the forest layer and ground layer. About 74. 5% of net radiation is used for evaportranspiration which accounts ior 77. 45 % of rainfall, so most radiation is mainly consumed on water cycling. In addition, the impact of radiate energy on snow-melting process was studied. It is found that mixed forest is an ideal runoff model of snow-melting because of its proper radiation characteristics as compared with other two forest types.

关 键 词：辐射能量 蒸发散 栎林 生态系统 

分 类 号：S718.554[农业科学—林学]