%0 Journal Article
%T Attenuation of photosynthetically available radiation (PAR) in Meiliang Bay under different winds and waves<br>不同风浪条件下太湖梅梁湾光合有效辐射的衰减
%A ZHANG Yunlin~
%A <br>张运林
%J 应用生态学报
%D 2005
%I 
%X Based on the successive underwater irradiance measurement in situ from Jul. 12 to 17 in 2003, the attenuation of photosynthetically available radiation (PAR) and euphotic depth in Meiliang Bay were analyzed under different winds and waves. The results showed that the downward PAR attenuation coefficients ranged from 2.63 to 4.7 m(-1), with an average of 3.63 +/- 0.47 x m(-1), and the corresponding euphotic depth ranged from 0.98 to 1.75 m, with an average of 1.29 +/- 0.18 m, which demonstrated that phytoplankton and macrophyte could not grow below 1.5 m due to the lack of adequate solar radiation. The total suspended solids resulted from wind and wave increased the attenuation of light, with the downward attenuation coefficients of PAR being 2.63, 3.72 and 4.37 x m(-1) under small, medium and large wind and wave, respectively. Significant linear correlations were found between transparence, PAR attenuation coefficient, euphotic depth and total suspended solid, especially inorganic suspended solid, while chlorophyll a was the most nonsignificant light attenuator. Multiple stepwise linear regressions showed that inorganic suspended solid was the most important light attenuator dominating the light attenuation in wind-exposed Meiliang Bay.
%K Meiliang Bay
%K Photosynthetically available radiation (PAR)
%K Suspended solid
%K Diffuse attenuation coefficient
%K Euphotic depth<br>梅梁湾
%K 光合有效辐射（PAR）
%K 悬浮物
%K 衰减系数
%K 真光层深度
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=0E4CCB160B06EA8E&yid=2DD7160C83D0ACED&vid=7801E6FC5AE9020C&iid=B31275AF3241DB2D&sid=6DAA05ECA4CD5075&eid=966760CE8B6E636C&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=11&reference_num=32