湖泊科学2019，Vol.31Issue(1)：256-267,12.DOI:10.18307/2019.0124
云南程海真光层深度的时空分布及其影响因子
Temporal-spatial distribution of euphotic depth and its influencing factors in Lake Chenghai, Yunnan Province, China
摘要
Abstract
Lake Chenghai is a plateau-enclosed deep lake located in Yongsheng County, Lijiang City, Yunnan Province, China.To understand the temporal-spatial distribution of euphotic depth and its influencing factors, we carried out field investigations including nine sampling sites in the lake from March 2016 to February 2017. The results showed that the mean value of the attenuation coefficient of photosynthetically active radiation and the euphotic depth were 1.06±0.25 m-1and 4.64± 1.27 m, respectively.There were no significant difference in the spatial distribution of the euphotic depth in the whole year, months, rainy and dry seasons. Meanwhile, the euphotic depth were significantly different among months (throughout the whole year, as well as in the rainy and dry seasons), and the highest and the lowest monthly value of euphotic depth were 6.49± 1.03 m (May) and 3.63± 0.48 m (July), respectively. Moreover, the phytoplankton biomass was the main regulating factor that controlling the euphotic depth, and the impact of suspended solids on euphotic depth was found in rainy season, few impact of chromophoric dissolved organic matter on euphotic depth was detected. To further test the indirect influencing factors that affecting euphotic depth, the Spearman correlation between the phytoplankton biomass and its ecological factors was also conducted. This study could accumulate the limnological data and provide the reference for the environmental protection of Lake Chenghai.关键词
真光层/漫射衰减系数/光合有效辐射/浮游植物/雨旱季/云贵高原/程海Key words
Euphotic zone/diffuse attenuation coefficient/photosynthetically active radiation/phytoplankton/rainy and dry seasons/Yunnan-Guizhou Plateau/Lake Chenghai引用本文复制引用
李凯迪,周远洋,周起超,董云仙,张运林,常军军,陈乐,陆轶峰..云南程海真光层深度的时空分布及其影响因子[J].湖泊科学,2019,31(1):256-267,12.基金项目
国家重点研发计划项目(2017YFA0605202) （2017YFA0605202）
国家自然科学基金项目(41601208,41621002) （41601208,41621002）
中国科学院前沿科学重点研究项目(QYZDB-SSW-DQC016) （QYZDB-SSW-DQC016）
云南省环境科学研究院创新团队计划项目联合资助 （）
