栓皮栎水源林林木耗水尺度扩展方法研究  

Study on Scaling-Up Method for Stand Water Consumption of Quercus variabilis Water Conservation Forest

作　　者：王华田[1] 邢黎峰[1] 马履一[2] 孙鹏森[3] 

机构地区：[1]山东农业大学林学院,泰安271018 [2]北京林业大学资源与环境学院,北京100083 [3]中国林业科学研究院森林生态环境与保护研究所,北京100091

出　　处：《林业科学》2004年第6期170-175,共6页Scientia Silvae Sinicae

基　　金：国家自然科学基金项目"30371147;2003";山东农业大学博士后基金"华北地区主要造林树种耗水特性和耗水调控机制研究";教育部博士点学科专项基金"北京市水源保护林区低耗水树种选择与林分结构配置的研究"(2000-2002)资助

摘　　要：Single trees sapwood scattering style and diameter classes diurnal water consumption rhythm were studied in a 48 years old Quercus variabilis stand at the east hill slope, located in the Forest Research Station of Beijing Forestry University in the water conservation area in Beijing (39°54′N, 116°28′E). Results showed that relation between trees sapwood area and diameter at breast height (DBH) was significant. Single trees daily water consumption ascended as DBH and sapwood area increased, and related significantly. Daily water consumption of different diameter class in September ascended steeply from the early morning and got the peak around 11:00 pm, and then descended till 18:00 when it got the valley slowly. Three-dimension model of daily-accumulated water consumption was acquired by scaling-up method from the typical Richards model and characteristic parameters of daily stand water consumption course were calculated from modulated Richards equation derivative: W d-it-j=(-7.147+1.174 d-i)[1-(-3 025.937+d 2.175 i)e (-0.011t-j)] 1/(1-d 0.242 i)(R=0.985 8).Single trees sapwood scattering style and diameter classes diurnal water consumption rhythm were studied in a 48 years old Quercus variabilis stand at the east hill slope, located in the Forest Research Station of Beijing Forestry University in the water conservation area in Beijing (39°54′N, 116°28′E). Results showed that relation between trees sapwood area and diameter at breast height (DBH) was significant. Single trees daily water consumption ascended as DBH and sapwood area increased, and related significantly. Daily water consumption of different diameter class in September ascended steeply from the early morning and got the peak around 11:00 pm, and then descended till 18:00 when it got the valley slowly. Three-dimension model of daily-accumulated water consumption was acquired by scaling-up method from the typical Richards model and characteristic parameters of daily stand water consumption course were calculated from modulated Richards equation derivative: W d-it-j=(-7.147+1.174 d-i)[1-(-3 025.937+d 2.175 i)e (-0.011t-j)] 1/(1-d 0.242 i)(R=0.985 8). 

关 键 词：栓皮栎 水源保护林 林木耗水量 林地水量平衡 

分 类 号：S727.210.1[农业科学—林木遗传育种] S715.4[农业科学—林学]