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Studies on Hydrophytes Diversity of Wetland in Beijing

Author: ChenYan
Tutor: ChenJianWei；CuiGuoFa
School: Beijing Forestry University
Course: Nature Reserve in school
Keywords: Beijing Wetlands Aquatic plants Biodiversity
CLC: Q948
Type: Master's thesis
Year: 2008
Downloads: 654
Quote: 2
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Abstract

Aquatic Plant Diversity of Wetland in Beijing as the basis for a similar analysis of the Beijing wetland provides a theoretical basis for wetland conservation. Investigation using quadrat transect method of combining the Beijing wetland aquatic plants, involving a total of 20 wetlands, 13 of which river wetlands, reservoirs and ponds wetlands 7. The survey sample covers the body of water within the wetlands and land and water transition zone. Submerged aquatic plant quadrat area of ??0.5m × 0.5m, water depth record quadrat, all species name, cover and biomass; the terrestrial herb quadrats emergent plant quadrat area of ??1m × 1m record quadrats within all species name, number of trees, average height, coverage and other data. After classification and identification, statistics the Beijing wetland common aquatic plants 22 families, 29 genera and 42 species. Emergent plants in 13 species, 12 kinds of floating leaf plants, 17 kinds of submerged plants. Reed (Phragmites australis), cattail (Typha angustifolia), Hydrilla (for Hydrilla is verticillata), Myriophyllum algae (Myriophyllum spicatum), Ceratophyllum demersum (Ceratophyllum demersum), the Potamogeton grass (Potamogeton crispus) and duckweed (Lemna minor), Beijing City the wetlands most common aquatic plants. TWINSPAN classification is based on the distribution of aquatic plants, 20 major wetlands in Beijing, to 20 wetlands divided into six groups. Gui River, the Huairou Reservoir with Huaisha Huai nine river wetland biodiversity and species composition similar divided into a group; Taurus Lake and Tanghe special aquatic plants are grouped together because of the growth; Guanting Reservoir, Hanshiqiao Reservoir and Miyun Reservoir As the investigation points habitat composition is divided into a group of similar species; Shirakawa, Juma, the Qingshuihe with the Yongding River flows through the ground environment similar to similar species composition; Chaohe Dashi Jinhaihu Ming Tombs Reservoir matrix the same human impacts therefore divided into a group; North Canal, North in Shahe, Liangshuihe with Wenyu divided into a group of very low water pollution and other reasons biodiversity. The use of aquatic plants geographical distribution of the frequency of the survey area quadrats distribution frequency, survey distribution and sensitivity to environmental factors as species and 4 species threatened with extinction risk index assessment can easily disappear, rush to spend ( Submerged) (Butomus umbellatus), of Vallisneria (of Submersed natans), the of Egeria Heights algae (Najas graminea) with small Heights algae (N.minor); likely to disappear species and 5, respectively, is the the Beijing Water the buttercup (Batrachium pekinense) water buttercup (B.bungei), tea Ling (Trapella sinensis), amphibious smartweed (Polygonum amphibium) the Potamogeton dishes (P.distinctus); may disappear kinds, watercress (Nasturtium officinale), S. natans (Salvinia natans ), Apple (Marsilea quadrifolia); safety kinds 24 kinds the the Greater Heights algae (N.marina), cattail, micro teeth pondweed (P.maackianus). Huairou Reservoir, Huaisha Huaijiuhe River Nature Reserve, Tanghe, Taurus Lake and Juma aquatic plants in particular, the distribution pattern of the submerged plants, the relationship between the water depth and the number of plants and biomass, an important value, as well as communities in biodiversity and other aspects of a specific study. And protection recommendations, to provide a reference for aquatic plants especially submerged plants for future research and protection measures.

Studies on Hydrophytes Diversity of Wetland in Beijing

Abstract

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