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本研究工作是在利用航空遥感信息进行黄土丘陵沟壑区侵蚀环境系列制图的基础上,对黄土侵蚀环境动态变化作了初步分析探讨。通过利用山西省离石县王家沟流域不同时期的航空像片,应用先进的地理信息系统软件ARc/INFO系统编制出了该流域不同时期,不同时段和不同类型的侵蚀环境系列图,包括影响侵蚀因素系列图、土壤侵蚀量分布图,流域沟谷形态变化图,时段侵蚀平均发展速度图以及治理评价图,并在此基础上,利用环境动态分析法分时段分析了流域侵蚀状况变化及其环境的变化。在侵蚀环境的分析中·不仅分析了影响侵蚀的自然因素,还揭示了人为因素对侵蚀的影响。研究结果,为黄土高原小流域水土流失综合治理措施的制定提供了科学依据。
Based on the series of maps of erosion environment in loess hilly and gully regions, this study made preliminary analysis on the dynamic changes of loess erosion environment using aerial remote sensing information. By using the aerial photographs of different periods of Wangjiagou watershed in Lishi County, Shanxi Province, a series of maps of different times, periods and types of erosion environment were compiled using the advanced geographic information system software ARc / INFO, including the impact of erosion The series of factors, the distribution of soil erosion, the change pattern of the basin valley morphology, the average growth rate of time-period erosion and the evaluation map of governance, and on the basis of this, analyzes the change of the erosion status and its environment by the method of environmental dynamic analysis Variety. In the analysis of the erosion environment, not only the natural factors that affect erosion are analyzed, but also the effects of human factors on erosion are revealed. The results provide a scientific basis for the formulation of comprehensive control measures for soil and water loss in the small watershed of the Loess Plateau.