南昌工程学院学报Issue(4)：16-22,7.
苏南丘陵区典型造林树种毛竹耗水特性研究
A Study on water consumption characteristics of Phyllostachys edulis, a typical afforestation species in Southern Jiangsu Province of China
摘要
Abstract
In order to study water consumption characteristics of Phyllostachys edulis,this paper conducts a continuous observation from September 2012 to August 2013 of the leaf transpiration rate,the sap flow rate and environmental factors by using LI-6400,sap flow meter and mini weather station in Nanjing Dongshanqiao Forest. The results indicate that:(1)the change of the transpiration rate(Tr )takes on a single-peak curve in all seasons. So does the net photosynthetic rate(Pn )in spring,autumn and winter. The Tr and Pn are at its highest in summer. Stomatal conductance has a prominent influence on the tran-spiration rate.(2)The sap flow rate of Phyllostachys edulis showes distinct diurnal changing rhythms both in sunny and cloudy days in different seasons. The crest values of the sap flow rate in spring,summer,au-tumn and winter are 2. 207 kg / h,4. 380 kg / h,2. 062 kg / h,and 0. 300 kg / h respectively.(3)The domi-nant environmental factors in spring,summer are solar radiation,but VPD in autumn and winter. Soil tem-perature and VPD have a significant impact on the average daily sap flow rate of Phyllostachys edulis.(4) The models which relate the transpiration rate,sap flow rate,daily sap flow with impact factors can explic-itly reflect the water consumption characteristics of Phyllostachys edulis.关键词
毛竹/蒸腾速率/树干液流/耗水特性/苏南丘陵区Key words
Phyllostachys edulis/transpiration rate/sap flow/water consumption characteristics/Southern Jiangsu Province分类
农业科技引用本文复制引用
刘鑫,谢德晋,张金池,庄家尧,施倩,岳健敏,韩诚..苏南丘陵区典型造林树种毛竹耗水特性研究[J].南昌工程学院学报,2014,(4):16-22,7.基金项目
长三角水源区面源污染林业生态修复技术研究项目（201104055-1）；国家自然科学基金资助项目（31170663）；江苏省高等学校林学优势学科建设项目 （）
