stepwise degradation 中文意思是什麼
stepwise degradation
解釋
分步降解- stepwise : adj. 1. 逐步的，逐漸的，分段的。2. 【音】轉換音級的。adv. 按階段地，逐步地。
- degradation : n. 1. 降級；免職。2. 退化；墮落。3. 【地質學；地理學】（地表的）剝蝕。4. 【化學】降解，遞降分解（作用）。5. 【物理學】（能的）退降。
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Beginning with the problem of interlaced region between farming and herding, the boundary line of the interlaced region is calculated based on grid with 10km grid ; then the relation among land use of the region, soil erosion and erosion region is analyzed ; based on factor classification, no useful factors were neglected and stepwise regression method was used to analysis the drive of land use change ; fractal method was applied to analysis the degradation of land - use and relation among land use, soil erosion and wind - water erosion zone ; environmental variances are introduced to establish characteristic index of land use change and analysis the effect of land use change on soil erosion
從農牧交錯帶的實質問題入手，基於10公里網格，計算農牧交錯帶的界限；在此基礎上分析農牧交錯帶的土地利用、土壤侵蝕及與風水侵蝕帶的關系；在因子分層的基礎上，剔除不需要因素，採用逐步回歸的方法，進行土地利用變化驅動力分析；運用分形方法分析土地利用的退化，並分析土地利用與土壤侵蝕的關系，引入環境變量，建立土地利用變化特徵指數，分析土地利用變化對土壤侵蝕的影響。
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