摘要
于1984年生长季,对河北省隆化县碱房乡大水泉村西山28年生油松人工纯林两块标准地水量平衡各分量进行了观测研究。其中1号标准地郁闭度0.7,密度2742株/ha;4号标准地郁闭度0.4,密度1358株/ha。两块标准地林分水量分配有一定差异。1号标准地林冠截留和树木蒸腾均较4号标准地大,地表径流和林地蒸发散小于4号标准地。两块标准地树木蒸腾、枯枝落叶截持、地表径流和土壤水分贮量变化差异均较小,而林地蒸发散和林冠截留差异较大。
The water balance of two plots (crown density 0.7 and stand density 2 742/ha in plot 1, and crown density 0.4 and stand density 1 358/ha in plot 4) in a 28—year old chinese pine plantation was observed during the growing season of 1984. The site studied is located on the western hill of Great Spring in Jlanfang, Longhua County, Hebei Province. The results indicate that the two plots differ in water balance. In plot 1 crown interception and tree transpiration are higher whereas surface flow and ground evapotranspiration are low compared with those in plot 4. The differences are insignificant in tree transpiration, litter interception, surface flow and change of soil water storage and significant in ground evapotranspiration and crown interception.
关键词
油松
人工林
水量平衡
Chinese Pine, Plantation, Water Balance.
