Journal of East China Normal University(Natural Sc ›› 2012, Vol. 2012 ›› Issue (4): 149-156, 163.

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Distribution characteristics of chlorophyll a and its relationship with phytoplankton density in Lake Dianshan

HU Xue-qin 1, WANG Qiang 1, MA Ming-rui 1, XU Chun-yan 1, YOU Wen-hui 1,2   

  1. 1.Department of Environment Science, East China Normal University, Shanghai  200062, China;  2.Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, East China Normal University, Shanghai 200062, China
  • Received:2011-07-01 Revised:2011-10-01 Online:2012-07-25 Published:2014-12-15

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Abstract: Ｔｈｉｓ ｐａｐｅｒ ｒｅｐｏｒｔｅｄ ｔｈｅ ｈｏｒｉｚｏｎｔａｌ ａｎｄ ｔｅｍｐｏｒａｌ ｄｉｓｔｒｉｂｕｔｉｏｎ ｐａｔｔｅｒｎ ｏｆ ｃｈｌｏｒｏｐｈｙｌｌ ａ ａｎｄ ｐｈｙｔｏｐｌａｎｋｔｏｎ ｄｅｎｓｉｔｙ ａｓ ｗｅｌｌ ａｓ ｔｈｅｉｒ ｒｅｌａｔｉｏｎｓｈｉｐｓ， ｗｈｉｃｈ ｗｅｒｅ ｂａｓｅｄ ｏｎ ｔｈｅ ｅｃｏｌｏｇｙ ｉｎｖｅｓｔｉｇａｔｉｏｎ ｃａｒｒｉｅｄ ｏｕｔ ｉｎ Ｌａｋｅ Ｄｉａｎｓｈａｎ ｆｒｏｍ  Ｏｃｔｏｂｅｒ ２００９ ｔｏ Ｓｅｐｔｅｍｂｅｒ ２０１０． Ｔｈｅ ｒｅｓｕｌｔｓ ｓｈｏｗｅｄ ｔｈａｔ：（１） Ｔｈｅ ｃｈｌｏｒｏｐｈｙｌｌ ａ ｃｏｎｃｅｎｔｒａｔｉｏｎ ｗａｓ ｒａｎｇｅｄ ｆｒｏｍ ０．８７ ｔｏ １３９．４３ｍｇ／ｍ３  ｗｉｔｈ ａ ｍｅａｎ ｏｆ（２５．３５±２．７１）ｍｇ／ｍ３；（２） Ｔｈｅ ｐｈｙｔｏｐｌａｎｋｔｏｎ ｄｅｎｓｉｔｙ ｗａｓ ｒａｎｇｅｄ ｆｒｏｍ ０．４０ ｔｏ ２１０．９１×１０６ｉｎｄ／Ｌ ｗｉｔｈ ａ ｍｅａｎ ｏｆ （１０．０２±２．４５）×１０６ｉｎｄ／Ｌ；（３） Ｉｎ ｔｈｅ ｔｅｍｐｏｒａｌ ｓｃａｌｅ，ｂｏｔｈ ｃｈｌｏｒｏｐｈｙｌｌ ａ ａｎｄ ｐｈｙｔｏｐｌａｎｋｔｏｎ ｄｅｎｓｉｔｙ ｗｅｒｅ ｈｉｇｈｅｒ ｉｎ ｓｐｒｉｎｇ ａｎｄ ｓｕｍｍｅｒ ａｎｄ ｌｏｗｅｒ ｉｎ ａｕｔｕｍｎ ａｎｄ ｗｉｎｔｅｒ． Ｉｎ ｔｈｅ ｈｏｒｉｚｏｎｔａｌ ｓｃａｌｅ,  ｔｈｅｙ ｗｅｒｅ ｈｉｇｈｅｒｉｎ ｎｏｒｔｈｅｒｎ ｓｉｔｅｓ ｔｈａｎ ｉｎ ｓｏｕｔｈｅｒｎ ｓｉｔｅｓ；（４） Ｃｏｒｒｅｌａｔｉｏｎ ａｎａｌｙｓｉｓ ｓｈｏｗｅｄ ｔｈａｔ ｃｈｌｏｒｏｐｈｙｌｌ ａ ａｎｄ ｐｈｙｔｏｐｌａｎｋｔｏｎ ｄｅｎｓｉｔｙ ｗｅｒｅ ｓｉｇｎｉｆｉｃａｎｔｌｙ ｃｏｒｒｅｌａｔｅｄ （Ｓｉｇ．≤０．０１）， ａｎｄ Ｃｈｌｏｒｏｐｈｙｔａ，Ｃｙａｎｏｐｈｙｔａ，Ｂａｃｉｌｌａｒｉｏｐｈｙｔａ ａｎｄ Ｃｒｙｐｔｏｐｈｙｔａ′ｓ ｄｅｎｓｉｔｉｅｓ′ ｃｏｎｔｒｉｂｕｔｉｏｎｓ ｔｏ ｃｈｌｏｒｏｐｈｙｌｌ ａ ｃｏｎｃｅｎｔｒａｔｉｏｎ ｗｅｒｅ ｈｉｇｈｅｒ ｔｈａｎ ｏｔｈｅｒ ｃａｔｅｇｏｒｉｅｓ．Ａｎｄ ｔｈｅ ｃｏｎｔｒｉｂｕｔｉｏｎｓ ｖａｒｉｅｄ ｗｉｔｈ ｓｅａｓｏｎｓ.

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