Present Situation Appraisal And District Control Research Of Youyang's KarstRocky Desertification

The KarstRocky Desertification causes the region ecological environment to worsen, the land productive forces decline loses, the water resources is short and the region impoverished occurrence. The KarstRocky Desertification control for ensuring the national ecological security, implement develop-the-west strategy , dwindle regional gap between rich and poor , maintain national unity and society harmonious to there are important meanings. The research of distribution present situation, scientifically carries on control district, the choice of control countermeasure and the pattern, is the assurance for control work smooth development and the implementation theory premise and the technical support.This article take the County of Chongqing Youyang as an example, supported by geographical information system and remote sensing technology, combine the field investigate , study technological route and method that the KarstRocky Desertification remote sensing interprets of Youyang, analyze distribute the current situation and drive the factor , put forward the comprehensive administration assigning to area of KarstRocky Desertification, have probed into corresponding managed countermeasure and mode. This text is divided into six parts altogether, main content and conclusion include:1. According to the open country investigation and the existing KarstRocky Desertification pertinent data, according to the remote sensing image characteristic, using the topic information extraction computer surveillance classification and the open country survey procedure, realizes on the spot to the KarstRocky Desertification information automatic solution translates.2. Using the GIS analysis function, carries on the multi- essential factors space combination analysis, has realized to the information deep excavation, effectively promulgates the KarstRocky Desertification spatial distribution rule. The karst area accounts for the county-wide total area 86.81%. Ecological environment frail, human contradictory incisive, soil erosion, and the KarstRocky Desertification is serious. Atpresent county-wide had the KarstRocky Desertification or half KarstRocky Desertification land at 797.42km2 (not to contain latent KarstRocky Desertification area), accounts for the county-wide total acreage 15.41%, mild at 309.05 km2,Moderate at 426.41 km2, intensity at 57.73 km2, beyond intensity at 4.24 km2, separately accounts for the county-wide total acreage extremely 5.97%, 8.24%, 1.12%, 0.08%.3. From the space correlation analysis, analyze the relevant relations of intensity of KarstRocky Desertification and natural factor and human factor , announce the drive factor causing the land of stony desertification to degenerate. Has, the developing process according to the KarstRocky Desertification, chooses 13 targets to carry on the influence factor analysis. The result indicated that, in the complex nature and the artificial active factor, in the complicated natural and artificial activity factor, arrange according to its the first 5 from coefficient correlation to a little one is: the carbonate rocks appear the area, the vegetation coverage fraction, have not utilized ground, the soil erosion area, the slope cultivated area,4. Carry on KarstRocky Desertification control according to natural environment terms , social economic terms and KarstRocky Desertification difference of intensity dividing into area study, take different pointed administration measures and modes in line with the local conditions. The slope changes the ladder, takes back from agriculture also the forest, the characteristic after the fruit forest construction, the farmland capital construction, the ecology repair and so on is the KarstRocky Desertification control effective pattern.