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文章阐述了马尔柯夫模型在水土流失动态变化预测中的应用,并选取福建省长汀县为研究区,分别利用长汀县2000年和2007年的遥感影像图,在RS软件和GIS软件支持下,运用马尔柯夫模型预测了2014年该县的水土流失变化情况。研究发现:在2007-2014年,长汀县的水土流失趋势是流失面积和强度在一定程度上得到控制,总的水土流失面积缩小,强度降低,极强度和剧烈侵蚀不明显,生态环境得到好转。这一发现说明红壤退化地的水土流失正处在一种变化状态,预示着未来时期以长汀县为代表的红壤退化地人为干扰仍然是水土流失面积和强度变化的主要方面,红壤退化地的水土保持任务仍较艰巨。
The article expounds the application of Markov model in the prediction of the dynamic change of soil and water loss, and selects Changting County of Fujian Province as the research area. Using remote sensing images of Changting County in 2000 and 2007 respectively, and RS software and GIS software support , Using Markov model to predict the change of soil and water loss in this county in 2014. The study found that in 2007-2014, the trend of soil and water loss in Changting County was that the area and intensity of drainage loss were controlled to a certain extent, the total area of soil and water loss was reduced, the intensity was reduced, the extreme intensity and severe erosion were insignificant, and the ecological environment Better. This finding shows that the soil erosion in degraded red soils is in a state of change, which indicates that the human disturbance caused by degraded red soils, represented by Changting County in the future, is still the major aspect of the area and intensity of soil erosion. Soil and water conservation task is still arduous.