已入深夜,您辛苦了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!祝你早点完成任务,早点休息,好梦!

Temporal dependence of chlorophyll a–nutrient relationships in Lake Taihu: Drivers and management implications

富营养化 环境科学 营养物 浮游植物 叶绿素a 水华 浊度 营养水平 水文学(农业) 生态学 生物 植物 材料科学 岩土工程 工程类 冶金
作者
Wei Zou,Guangwei Zhu,Hai Xu,Mengyuan Zhu,Yunlin Zhang,Boqiang Qin
出处
期刊:Journal of Environmental Management [Elsevier BV]
卷期号:306: 114476-114476 被引量:44
标识
DOI:10.1016/j.jenvman.2022.114476
摘要

Eutrophication and its associated algal blooms are principal environmental challenges confronting lakes worldwide. The empirical relationships between nutrient (total nitrogen, TN; total phosphorus, TP) and chlorophyll a (Chla) level are widely used as a theoretical basis for lake eutrophication management. Here, seasonal environmental variables and Chla from 2005 to 2020 in Chinese shallow eutrophic Lake Taihu were examined and Chla-nutrient equations in the entire period and annually from 2005 to 2020 were explored using 95% quantile regression model. The results showed robust linear relationships of logChla-logTN and logChla-logTP in the vast majority of cases. Based on Chla-nutrient equations in the entire study period, 0.69 mg/L TN and 52 μg/L TP are recommended as nutrient threshold in Lake Taihu. Furthermore, the results revealed increasing Chla sensitivity to nutrient for each study month (i.e. February, May, August, and November) from 2005 to 2020, whose drivers included increase in water temperature and water level, decrease in wind speed, mass ratio of nitrogen to phosphorus, and grazing effect. It is noteworthy that atmospheric stilling is likely to be the key climatic factor promoting annual peak Chla in Lake Taihu. For one, the deviations of the sub-index of Trophic State Index indicated that light is a critical limiting factor of summer Chla in Lake Taihu. For another, calmer water mainly due to atmospheric stilling decreased near 40% non-algal turbidity and a substantially increased buoyant cyanobacteria during the study period, improving phytoplankton "light niche". Thus, increasing algal sensitivity to nutrient occurred until the additional algal-turbidity induce further light limitations or the exhaustion of TN (or TP) cause nutrient limitation. Given atmospheric stilling is a global phenomenon, this study would affect future algal bloom mitigation efforts in shallow lakes as temperature is always the focus in the recent literatures on global climate change.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
aa完成签到,获得积分10
2秒前
Doris完成签到 ,获得积分10
2秒前
Chi_bio关注了科研通微信公众号
3秒前
CodeCraft应助hhhi采纳,获得10
6秒前
一直向前发布了新的文献求助10
8秒前
12秒前
15秒前
15秒前
AFM发布了新的文献求助10
20秒前
21秒前
独特跳跳糖完成签到 ,获得积分10
21秒前
立军完成签到,获得积分10
24秒前
Sarah完成签到 ,获得积分10
25秒前
落晖完成签到 ,获得积分10
25秒前
Chi_bio发布了新的文献求助10
25秒前
xx1234567890发布了新的文献求助10
26秒前
张aa完成签到 ,获得积分10
26秒前
风鱼完成签到 ,获得积分10
27秒前
没有昵称完成签到 ,获得积分10
30秒前
三井库里发布了新的文献求助10
32秒前
36秒前
洛芷发布了新的文献求助10
39秒前
在水一方应助hugeng采纳,获得10
39秒前
Eliauk完成签到 ,获得积分10
41秒前
Jepsen完成签到 ,获得积分10
41秒前
41秒前
hhhi发布了新的文献求助10
46秒前
空里流霜不觉飞完成签到 ,获得积分10
47秒前
50秒前
hugeng完成签到,获得积分10
51秒前
noothinh完成签到,获得积分10
52秒前
Chi_bio完成签到,获得积分10
53秒前
lizigongzhu完成签到,获得积分10
53秒前
hugeng发布了新的文献求助10
54秒前
ding应助昏睡的南霜采纳,获得10
55秒前
ding应助曹大壮采纳,获得10
55秒前
yydragen应助黎乐荷采纳,获得30
55秒前
55秒前
Lucas应助废式脂肪采纳,获得10
56秒前
59秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
Aktuelle Entwicklungen in der linguistischen Forschung 300
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989918
求助须知:如何正确求助?哪些是违规求助? 3532013
关于积分的说明 11255831
捐赠科研通 3270829
什么是DOI,文献DOI怎么找? 1805053
邀请新用户注册赠送积分活动 882233
科研通“疑难数据库(出版商)”最低求助积分说明 809216