应用GIS制作Coringa红树林物种分布图

Application of GIS in the Preparation of Species Distributional Maps for Coringa Mangroves Based on Ground Truth Data

Coringa野生保护区是印度东海岸第二大红树林保护区。采用PCQM(PointCenteredQuarterMethod)方法获取了该区红树林树木底面积数据Arcinfo 8.1制作物种密度分布图 ,结果显示 ,该区红树林植物有 15种 ,分属 8个科 10个属 ,动物则包括 7个门 (Arthropda ,Mollusca ,Pisces ,Amphibia ,Reptiles,AvesandMammals)。在 15种红树林植物中 ,Avicenniamarina ,A .officinalis和Excoecariaagallocha是保护区中分布最广泛的种类 ,他们的分布密度随盐度的变化而变化 ,Rhizophoraapiculata和R .

Coringa wildlife sanctuary is the second largest mangrove formation on the east coast of India with its rich floral and faunal biodiversity.The total number of floral species is composed of 15(8 families and 10 genera) conile fauna represented by 7 diverse groups such as Arthropoda,Mollusca,Pisces,Amphibia,Reptiles,Aves and Mammals.Out of 15 mangrove plant species,Avicennia marina,A.officinalis and Excoecaria agallocha are the most widely distributed species within the sanctuary representing their wide tolerance capacity towards varying salinity ranges.Rhizophora apiculata and R.mucronata are mostly confined to the seaward fringes in this region.During present study,an attempt was made to prepare the species level distributional maps for the above said plant communities with the help of Arc Map 8.1 based on basal area(m^2 per 0.1 hm^2) estimations derived from PCQM(Point Centered Quarter Method).