欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
通过对计算树干液流密度的Granier经验公式进行试验验证和校正,比较不同长度的热消散探针（TDP）测量粉单竹液流的结果,探讨TDP在粉单竹液流研究中的适用性,并与邻近生长的常见树种荷木的液流日变化进行比较分析.结果表明：由于粉单竹的竹壁较薄、解剖结构异质性较高,10mm探针可能低估粉单竹的液流密度,8和5mm探针监测的液流密度值较准确.粉单竹液流密度平均值和日变化格局的偏度均大于荷木,而夜间荷木的液流活动比粉单竹活跃,说明粉单竹的夜间补水不如荷木.以TDP探针研究竹子的液流是可行的,但应用于不同竹种之前,必须对Granier经验公式进行有效的验证和校正.
英文摘要：
Based on the validation of Granier＇s empirical formula for calculating tree stem sap flux density,a comparative study was conducted on the measurement of Bambusa chungi sap flow by using different lengths of thermal dissipation probe（TDP）,aimed to approach the applicability of TDP in measuring the sap flow of B.chungii.The difference in the daily change of the sap flow between B.chungii and nearby growing Schima superb was also analyzed.Because of the thinner bamboo wall and the heterogeneous anatomy,the sap flux density of B.chungii measured by 10 mm long probe could be underestimated,but that measured by 8 and 5 mm long probes could be relatively accurate.The comparison of the sap flow between B.chungii and nearby growing S.superba revealed that both the mean sap flux density and its daily change pattern＇s skewness of B.chungii were higher than those of S.superba,but the nighttime sap flow of B.chungii was less than that of S.superba,indicating that the water recharge of B.chungii during nighttime was less active than that of S.superba.It was suggested that using TDP to investigate the sap flow of bamboo would be feasible,but careful calibration would be required before the TDP was put into application on different bamboo species.
同期刊论文项目
同项目期刊论文
Temporal variation in sap-flux-scaled transpiration and cooling effect of a subtropical Schima super
Stomatal and hydraulic conductance and water use in a eucalypt plantation in Guangxi, southern China
CO2 uptake of a mature Acacia mangium plantation estimated from sap flow measurements and stable car
Biophysical limits to responses of water flux to vapor pressure deficit in seven tree species with c
Effects of sap velocity on the daytime increase of stem CO2 efflux from stems of Schima superba tree
Nighttime sap flow of Acacia mangium and its implications for nighttime transpiration and stem water
期刊信息
位置：