The Dynamic Monitor And Analysis Of Land Use And Land Coverchange In Dalatulu By Remote Sensing

This research takes Erdos Toke county Dalatulu as the research area. On the basis of prior investigations on hydrology, geology, vegetation and landscapes, the remote sensing ecological investigation of this area's vegetation and landscapes utilizes the remote sensing video data. Through this comprehensive and meticulous field research, the land utilization interpretation mark and the vegetation type mark are built. According to the interpretation mark, utilizing the Arcview3.2 geographic information system, interaction graphic is draft . These conclude Dalatulu area's 2002 and 2006 hydrographical chart, present land use map, present vegetation type map, landscapes map and hydrological map. Then comparing two years'datue, it could display the variability matrix. At the same time, the ordinary indexes of landscape ecology is used to quantize its dynamic change, which reveals the dynamic change tendency of land use and vegetation type in Erdos Toke county Dalatulu's area. Then, according to the condition of the ecology environment could be investigated. The result shows that:â‘ Between 2002 and 2006, the type of landscape in Dalatulu area has changed, which mainly appears: the dene immensely decreases, the shrub land greatly increases, the meadow with high coverage reduces, the lacustrine area diminishes and the meadow of low, middle coverage increases.â‘¡The plant community which Artemisia ordosica community, Artemisia scoparia community, Cynanchum komarovii are in the dominate, the Stipa bungeana Trin. Mem. Sav, Bothriochloa ischaemum and Stipa capillata, Cleistogenes songorica, Artemisia frigida are constructive species increase .On other hand, the plant community which the Artemisia ordosica is in the dominate, the Agriophyllum pungens (Vahl) Link ex A.Dietr, Cleistogenes songorica are constructive species, and the Caragana stenophylla Pojark, Caragana korshinskii Kom plant community decrease. Both of them above are the features in Dalatulu waterhead area, as is shown that the artificial plant community and the poisonous community raise.â‘¢To take advantage of the ordinary indexes of landscape ecology, it turns out that the indexes could quantize the dynamic change when analyzing the land use and the vegetation type, which is effective and meaningful. And according to the change of land use and the vegetation type, which is on the base of groundwater level variability, it shows that the declining of the groundwater level has less effect on the vegetation above. Different type has different effect, different ways and different intensity to the marsh. Its main influencer is different.