Research On Landscape Planning And Design Method Of River Habitat Restoration Of Crested Ibis In Yangxian County,shaanxi Province

Crested Ibis is one of the most endangered and rare birds in the world.In recent decades,under the vigorous protection of Crested Ibis,the number of wild population of Crested Ibis is increasing.However,the food and suitable nest sites in its breeding place are relatively scarce,especially the river habitat of Crested Ibis.Crested Ibis individuals gradually spread to the surrounding areas,and the area of Crested Ibis distribution is gradually expanding,which makes the protection of Crested Ibis more difficult,especially the protection of potential foraging breeding sites.Otherwise,crested ibis is likely to be affected by pesticide pollution,human interference and other factors.Crested Ibis is the most dangerous and vulnerable period in winter.Its foraging activity is very important in winter.On the basis of passing through the cold winter,it also needs to reserve additional energy for breeding in spring.However,due to the influence of human farming methods,the number of foraging areas in winter is greatly reduced,and the river foraging area is the last guarantee for Crested Ibis.The Hanjiang River Basin is one of the important foraging places for wild Crested Ibis in Yangxian county.Affected by the gold mining industry,its river structure has been destroyed,the water habitat quality has declined,and the aquatic organisms have been seriously affected.The frequency of Crested Ibis foraging in the Hanjiang River has decreased significantly,and the Crested Ibis river habitat needs to be repaired.However,at present,there is a lack of understanding about the habitat selection rules of Crested Ibis,especially the river habitat.How to effectively protect and repair the river habitat is the focus of research.According to the protection and restoration needs of Crested Ibis river habitat,based on the research of habitat factors,river habitat,landscape pattern and scale effect,the typical factors of Crested Ibis river habitat were determined by using literature review,software analysis and other methods,combined with Crested Ibis habits and river habitat pattern,Based on the results of suitability assessment,a multi-scale river habitat restoration method for Crested Ibis habitat in Yangxian county was formed,which was applied to the planning and design of river habitat restoration for Crested Ibis habitat with restoration potential.The main contents are as follows:(1)to determine the typical habitat factors of Crested Ibis river habitat.The landscape pattern index changes over the years,the comparison of foraging spatial landscape pattern index and the perception index of field investigation were judged,and the typical restoration habitat factors and problems were summarized.(2)The evaluation system of river habitat suitability for Crested Ibis was established.Based on the suitability evaluation of Crested Ibis river habitat in Yangxian County,the high suitability habitat at various scales was selected as the restoration target.Based on the determination of typical restoration factors of Crested Ibis river habitat and related problems,the restoration design method of Crested Ibis river habitat in Yangxian county was constructed by using the corresponding restoration design methods from the perspective of landscape architecture.(3)To construct the river habitat restoration method of Crested Ibis habitat in Yangxian county.Based on the principle of scale conversion,the ecological scale was converted into the landscape planning and design scale,and the operability of river habitat restoration method for Crested Ibis habitat was studied.Taking the river habitat diagram with high suitability as the restoration target,the habitat restoration method was constructed from multi-scale.(4)To realize the practice of river habitat restoration and landscape planning and design of Crested Ibis habitat in Yangxian county.Through suitability evaluation,literature review and field investigation,the key remediation sites with remediation potential were identified.The restoration method is applied to the practice of habitat restoration and landscape planning and design.The main conclusions and innovations of the study are as follows: in view of the new needs and habitat problems of Crested Ibis and its habitat protection stage,through the research on the existing research results of bird ecology,using the theory of landscape ecology,from the perspective of landscape architecture,it is summarized as the river habitat restoration method of Crested Ibis habitat,It has been applied to the practice of river habitat restoration of Crested Ibis in wintering period.By using the theory of scale transformation and graphic landscape,the current research on endangered birds is transformed into the operational theoretical research and practical application of landscape architecture,which provides restoration methods and landscape planning and design application for the protection and restoration of Crested Ibis habitat and river habitat.