海洋地质与第四纪地质2018，Vol.38Issue(1)：23-31,9.DOI:10.16562/j.cnki.0256-1492.2018.01.003
全球变化下九龙江河流-河口系统营养盐循环过程、通量与效应
Nutrient cycling processes, fluxes and effects in the Jiulong river-estuary system under global change
摘要
Abstract
River-estuary is an important component of earth system linking land and ocean cycling of materials.Human activities and climatic change have substantially altered nutrient cycling accompanied by series of negative ecological effects (e.g.,eutrophication,harmful algal bloom,hypoxia,acidification).Based on the recent studies using in-situ observation,experimental and modeling approaches as tools,this paper summarized current understanding of the subtropical Jiulong River-Estuary system in Southeast China,including long-term change in nutrients (nitrogen,phosphorus,silica) in terms of concentration and flux and controlling factors,aquatic denitrification,nutrient retention by cascade dam reservoirs,and impacts of climate change (storm events and warming) on nutrient delivery and cycling.Potential effects of nutrient variation on aquatic ecosystems are also discussed.Current results suggest that small and medium-sized rivers are more sensitive than large rivers to human and climate perturbation in terms of nutrient biogeochemistry and ecology.Research priorities on nutrient biogeochemistry of the watershed-estuary-coast continuum under global change were proposed:(1) Capture nutrient changes at various temporal and spatial scales through intensive field observation and reveal key processes and drivers of nutrient cycling using multidisciplinary integrated study approach.(2) Evaluate the uniqueness of small and medium-sized rivers and their role in regulating global or regional climate and environment.(3) Further study the nutrient retention by river dams and coastal wetlands and associated effects on the aquatic ecosystems.关键词
营养盐/富营养化/人类活动/气候变化/九龙江Key words
nutrient/eutrophication/human activity/climate change/the Jiulong River分类
资源环境引用本文复制引用
陈能汪..全球变化下九龙江河流-河口系统营养盐循环过程、通量与效应[J].海洋地质与第四纪地质,2018,38(1):23-31,9.基金项目
国家自然科学基金“亚热带暴雨事件的河海界面生物地球化学响应”(41376082) （41376082）
国家自然科学基金“亚热带典型河流-河口系统氮的反硝化过程与调控”(41076042) （41076042）
国家自然科学基金“亚热带河流-河口界面氨氮污染转运的主控过程”(41676098) （41676098）
NSFC国际(地区)重大合作项目“九龙江流域-河口-近海系统耦合变动及环境生态效应”(40810069004) （地区）
福建省自然科学基金“九龙江河流-河口界面无机磷和铵氮转化及其与颗粒物的关系”(2016J01197) （2016J01197）
中央高校基本科研业务费专项资金“海陆界面水动力、颗粒物与营养盐耦合”(20720160120) （20720160120）
中央高校基本科研业务费专项资金“梯级电站库区群甲藻水华爆发的‘空间级联反应’机制”(2012121053) （2012121053）
