Study On Characteristics Of The Natural Landscape Ecosystems In The Yellow River Beach

This paper is the use of GPS global positioning systems and geographic information systems technology to study the characteristics of the natural landscape ecosystems in the Yellow River beach in Kaifeng (Heigangkou—Liuyuankou) to discussion that the correlation between the natural communities ecosystem diversity and the landscape heterogeneity, under the different influence of human activities. Papers to survey natural communities like the wild side, SPOT high-resolution images, land use / land cover data and ground-based GPS data collection as the main data source. In remote sensing and geographic information systems technology, come to study samples of the distribution of types of landscape. With SPSS 10.0 data processing software, analysis the species diversity and ecosystem diversity of natural communities in theYellow River beach in Kaifeng (Heigangkou—Liuyuankou) .Through the use of landscape heterogeneity index, the landscape pattern characteristic index, quantitative study of the regional landscape pattern of spatial heterogeneity.Conclusion: (1) Herbaceous vegetation is rich. The number of species is 76 and the number of branch is 26. The Gramineae is 18, the Compositae is16,the Cyperaceae is9,the Polygonaceae is 5,the Amaranthacae is 4.the gramineae is the most of all, the percentage of the species is 39.7%,the second most of all is Compositae and the percentage of the species is 24.96%. the quantity number of Phragmites australis is the most of all in the Gramineae.the quantity number of Aster tataricus is the most of all in the Compositae. (2)The community type is rich and varied.Among them the beach grassland ecosystem natural communities have a high abundance and diversity are significantly higher than other weed community ecosystems, only uniformity index below the old beach grassland, Reflects the impact and the role of the natural grassland ecosystem to the the number of species and species diversity. (3) Under the influence of human activities ,the landscape heterogeneity and the natural communities ecosystem diversity has a dominant relation. The landscape heterogeneity and community diversity correlation coefficient of different buffer zone (100m,200m,300m)is 0.840,0.915 and 0.887.