Basic ecological characteristics including water body,soil and biology and their correlativity were systematically studied by field investigation on the sampling belt from estuary of Lishui River to Muping Lake.The results showed that: (1) Current velocity decreased almost linearly from the estuary to central lake.Water depth was high in estuary and low in central lake.Other indices in water body such as transparency,NO3-N,NH4+-N,total N and total P were maintained fluctuation within a range.(2)The soil in central lake contained higher organic matter,N and P contents,while relatively lower soil organic matter,N and P contents were found in estuary.(3) Water plants could not survive in estuary,and central lake was the main regime for the growth of water plants,where had higher species richness,biomass and biodiversity.(4) The favorable hydrological and soil environments such as appropriate water flowing and fertile soil provided suitable conditions for the growth of water plants,and high current velocity and infertile soil in the central lake were the main reasons explaining for the inexistence of water plants.Correlative analysis showed that mutual effects existed among water physiological and chemical characteristics,soil physiological and chemical characteristics and biological characteristics,and that current velocity was the decisive or key factor in regulating the changes of ecological characteristics.
谢永宏, 李锋, 侯志勇, 陈心胜, 秦先燕. 澧水河口区与目平湖心区的基本生态特征[J]. , 2008, 27(6): 439-445.
XIE Yong-hong, LI Feng, HOU Zhi-yong, CHEN Xin-sheng, QIN Xian-yan. Basic ecological characteristics in estuary of Lishui River and central area of Muping lake. , 2008, 27(6): 439-445.
[1] Gosselink J G,Turner R E.1978.The role of hydrology in freshwater wetland ecosystem[A]. In:Good R E,Wigham D,Simpson R L (eds).Freshwater Wetland-ecological Processes and Management Potential[C]. New York:Acamemic Press,Inc.,63-78.
[9] Brinson M M.1993.Changes in the functioning of wetlands along environmental gradients[J]. Wetlands,13:65-74.
[10] Robertson A I,Bunn S E,Boon P I,et al.1999.Sources,sinks and transformations of organic carbon in Australian floodplain rivers[J]. Mar.Freshwater Reg.,50:813-829.
[11] Barko J W,Gunnison D,Carpenter S R.1991.Sediment interactions with submersed macrophyte growth and community dynamics[J]. Aquat.Bot.,41:41-65.
[13] Wcrner I,Weise G.1982.Biomass production of submersed macrophytes in a selected stretch of the River Zschopau (South GDR) with special regard to orthophosphate incorporation[J]. Int.Revue Ges.Hydrobiol.,67:45-62.
[14] Carr G M,Duthie H C,Taylor W D.1997.Models of aquatic plant productivity:a review of the factors that influence growth[J]. Aquat.Bot.,59:195-215.
[15] Madsen J D,Adams M S.1988.The seasonal biomass and productivity of the submerged macrophytes in a polluted Wisconsin stream[J]. Freshwater Biol.,20:41-50.
[16] Stevenson J C.1988.Comparative ecology of submersed grass beds in freshwater,estuarine,and marine environments[J]. Limnol.Oceanogr.,33:867-893.
[17] Chambers P A,Prepas E E,Hamilton H R,et al.1991.Current velocity and its effect on aquatic macrophytes in flowing waters[J]. Ecol.Appl.,1:249-257.
[18] 刘健康.1999.高级水生生物学[M]. 北京:科学出版社.
[19] Brix H.1997.Do macrophytes play a role in constructed treatment wetlands[J]. Wat.Sci.Tech.,35:11-17.
[20] Scheffer M,van den Berg M,Breukelaar A,et al.1994.Vegetated areas with clear water in turbid shallow lakes[J]. Aquat.Bot.,49:193-196.
[21] Xie Y H,Luo W B,Ren B,et al.2007.Morphological and physiological response to sediment type and light availability in roots of the submerged plant Myriophyllum spicatum[J]. Ann.Bot.,100:1517-1523.
