Spectral attenuation of ultraviolet and visible radiation in lakes in the Yunnan Plateau, and the middle and lower reaches of the Yangtze River, China
Spectral attenuation of ultraviolet and visible radiation in lakes in the Yunnan Plateau, and the middle and lower reaches of the Yangtze River, China
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云南高原及长江中下游湖泊紫外可见辐射光谱衰减
DOI：
10.1039/c0pp00270d
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发表时间：
2011-03
影响因子：
3.1
通讯作者：
Liu, Xiaohan
中科院分区：
文献类型：
--
作者：
Zhang, Yunlin;Yin, Yan;Zhang, Enlou;Zhu, Guangwei;Liu, Mingliang;Feng, Longqing;Qin, Boqiang;Liu, Xiaohan
2006年和2007年在中国云南高原16个湖泊42个站点和长江中下游4个湖泊41个站点进行了太阳辐射光谱的现场测量，以确定影响紫外辐射（UVR）和光合有效辐射（PAR）的主要因子。YP中PAR的漫衰减系数（K _d（PAR））在0.19 ~ 2.88 m^-1之间变化，显著低于YR中测量的数值，后者在0.55 ~ 4.52 m^-1之间变化（t检验，p < 0.001）。在UV-B波段（320 nm），YP中的K _d（320）范围为0.59 ~ 18.56 m^−1，显著低于YR中的K_d（320）范围（4.80 ~ 20.64 m^−1）（t检验，p < 0.001）。相应的1%衰减深度在YP湖中为0.25至7.81 m，在YR湖中为0.22至0.96 m（t检验，p < 0.001）。偏相关分析被用来划分在两个不同的区域的UVR和PAR衰减的每一个光学活性物质的重要性。在YP湖中，发色溶解有机物（CDOM）吸收解释了UV-B（320 nm）和UV-A（360 nm）衰减的大部分变化（偏相关：分别为r = 0.911，p <0.001; r = 0.820，p <0.001）。Tripton和浮游植物没有显着的贡献UVR衰减。Tripton、浮游植物和CDOM对PAR衰减均有显著贡献，其中Tripton的偏相关系数最高。在YR湖泊中，浮游植物，和CDOM都作出了显着的贡献，紫外线衰减。CDOM对UVR的贡献随波长的增大而减小，而浮游植物和总有机质对UVR的贡献随波长的增大而增大。Tripton对UV-A衰减的贡献最大。总有机质和浮游植物对PAR衰减有显著的贡献，总有机质的偏相关系数较高，而CDOM对PAR衰减的贡献不显著。研究中的UVR和PAR的吸收和衰减数据表明，从吸收为主的Kd在YP湖泊的YR湖泊散射为主的Kd。
Solar radiation spectra were measured in China in 2006 and 2007 in situ in 16 lakes with 42 stations in the Yunnan Plateau (YP) and in 4 lakes with 41 stations in the middle and lower reaches of the Yangtze River (YR) to determine the principal factors influencing ultraviolet radiation (UVR) and photosynthetically active radiation (PAR). The diffuse attenuation coefficient for PAR ( K _d(PAR)) varied from 0.19 to 2.88 m^-1 in the YP, which was significantly lower than the values that were measured in the YR, which ranged from 0.55 to 4.52 m^-1 ( t -test, p < 0.001). In the UV-B region (320 nm), K _d(320) ranged from 0.59 to 18.56 m^−1 in the YP, significantly lower than that in the YR, which ranged from 4.80 to 20.64 m^−1 ( t -test, p < 0.001). The corresponding 1% attenuation depths ranged from 0.25 to 7.81 m in the YP lakes and 0.22 to 0.96 m in the YR lakes ( t -test, p < 0.001). Partial correlation analyses were used to partition the importance of every optically-active substance on UVR and PAR attenuation in the two different regions. In the YP lakes, chromophoric dissolved organic matter (CDOM) absorption explained most of the variability in the UV-B (320 nm) and UV-A (360 nm) attenuations (partial correlation: r = 0.911, p <0.001; r = 0.820, p <0.001, respectively). Tripton and phytoplankton made no significant contributions to UVR attenuation. Tripton, phytoplankton and CDOM all made significant contributions to PAR attenuation with the highest partial correlation corresponding to tripton. In the YR lakes, tripton, phytoplankton, and CDOM all made significant contributions to UVR attenuation. The contribution of CDOM to UVR decreased with increasing wavelength, but the contribution of tripton and phytoplankton to UVR increased with increasing wavelength. Tripton contributed the most to UV-A attenuation. Tripton and phytoplankton made significant contributions to PAR attenuation with a higher partial correlation for tripton but CDOM had no significant contribution to PAR attenuation. The absorption and attenuation data of UVR and PAR in this study showed a shift from absorption-dominated K d in the YP lakes to scattering-dominated K d in YR lakes.
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云南高原湖泊有色溶解有机物变化及紫外线可能的衰减深度
影响因子：
1.6
作者：
Liu, Ming Liang;Zhang, En Lou;Zhang, Yun Lin;Wang, Xin;Qin, Bo Qiang
通讯作者：
Qin, Bo Qiang
影响因子：
4.5
作者：
Tartarotti B;Sommaruga R
通讯作者：
Sommaruga R
DOI：
10.18307/2008.0315
发表时间：
2008
期刊：
Journal of Lake Sciences
影响因子：
--
作者：
Sun Cheng-hua
通讯作者：
Sun Cheng-hua
DOI：
10.1016/j.jphotobiol.2007.11.008
发表时间：
2008-02
期刊：
Journal of photochemistry and photobiology. B, Biology
影响因子：
--
作者：
K. Hayakawa;Yuko Sugiyama
通讯作者：
K. Hayakawa;Yuko Sugiyama
影响因子：
2.6
作者：
B. R. Hargreaves;S. Girdner;M. Buktenica;R. W. Collier;E. Urbach;G. Larson
通讯作者：
B. R. Hargreaves;S. Girdner;M. Buktenica;R. W. Collier;E. Urbach;G. Larson