Study on Fishery Resource and Ecology of WuLanNuoer Reservoir in Inner Mongolia
|School||Inner Mongolia Agricultural University|
|Course||Animal Production and Management|
|Keywords||Fishery resources Type of nutrition Ecological Management The Ulan Noel Reservoir|
This article Current Water Quality the内蒙古乌兰诺尔reservoir , part of the biological factors , the fish community structure and fisheries resources dynamically conduct a comprehensive study , based on comprehensive evaluation of the nutritional status and the state of the environment of the reservoir , the reservoir fishery resources reasonable use and ecological management of the fishery environment provide a theoretical basis . The main results are: (1) the reservoir 7 points out of water of an average water depth of 152.06cm , the average water temperature of 11.4 ° C ; the average turbidity 20.89FTU ; pH value to 7.92 ; the average DO content of 7.11mg / L ; ALK and HD 11.67mmol / L and 6.04 mmol / L . NH4 ( NH3 ) - N annual mean concentration of 1.384mg / L NO3 - N 0.474mg / L NO2 - N 0.079mg / L , PO43 - P 0.187mg / L , the TP for 0.159mg / L , TN as 1.233mg / L. Phytoplankton total of 30 species, the biomass average wet weight of 7.88 mg / L ; dominant phytoplankton biomass per Cyanophyta and Chlorophyta . Zooplankton total of 28 , the average biomass of 3.86mg / L , copepods gt ; the Cladocera GT ; the rotifers gt ; protozoa. Zooplankton and phytoplankton biomass no significant correlation ( p GT ; 0.05 ) , rely solely on the zooplankton on phytoplankton can not be effectively controlled . Reservoir fish about 14 kinds of main economic fish for carp , carp, catfish and red fins Culter , according to the actual situation in which the three species of fish were analytical determination . From an economic perspective or from reservoir fisheries ecological point of view , the fish population in the reservoir unreasonable structure . According to the characteristics of the water chemistry , various biological biomass and types of indicators to determine water quality - eutrophic , and continue to eutrophic development trend . Proposed to strengthen phytoplanktivores fish stocking , adjust the structure of the small carnivorous fish , in order to strengthen the use and output of nutrients in water , both to increase income , but also to protect the environment . And proposed of fisheries environmental protection ecology countermeasures for the sustainable development of reservoir fisheries provide a theoretical basis and practical guidance .