湖泊科学Issue(3)：436-444,9.
三峡水库香溪河初级生产力及其影响因素分析∗
Primary production and its influencing factors in Xiangxi River, Three-Gorges Reservoir
摘要
Abstract
The dark and light bottle method of oxygen measurement was adopted to determine the primary production at different sites and different water depths (0. 5, 1. 0, 2. 0, 5. 0 and 10. 0 m) in Xiangxi River, Three-Gorges Reservoir during 2013 and 2014. 4 sites were located in the upper reaches (PYK), the middle reaches (XK), the anabranch (WJW) and the lower reaches ( HK) , respectively. There was a significant spatial difference in phytoplankton primary production. The gross primary production of the anabranch on the upper reaches was much higher than that on the middle reaches, but the least gross primary production ap-peared at the lower reaches. With the increase of the depth of the water, the primary production increased at 0 2 m depth, and then decreased at >2 m water depth. The primary production showed a significant seasonal variation. The light intensity, water temperature and weather have influenced the primary production of Xiangxi River significantly. There is a close relationship be-tween the primary production and chlorophyll-a. It could be concluded that hydraulic regime was the important factor to influence the primary production and divided Xiangxi River into two different parts. Based upon the primary production, Xiangxi River was eutrophic with autotrophic metabolism.关键词
香溪河/三峡水库/初级生产力/浮游植物/黑白瓶法Key words
Xiangxi River/Three-Gorges Reservoir/primary production/phytoplankton/dark and light bottle method引用本文复制引用
张琪,袁轶君,米武娟,杨毅,毕永红,胡征宇..三峡水库香溪河初级生产力及其影响因素分析∗[J].湖泊科学,2015,(3):436-444,9.基金项目
中国长江三峡集团公司科研项目(CT-12-08-01)和国家自然科学基金项目(31123001)联合资助 （CT-12-08-01）
