【摘要】 介绍了 MATL AB及其有关功能 ,并利用 MATL AB对宜川黄土丘陵区的空旷地、采伐地和油松林地 3类不同地表植被土壤水分长期观测数据进行综合分析研究。结果表明 ,油松林地土壤水分含量在土层深度 40—6 0 0 cm是三者中最低的 ,其主要用水层在 40— 6 0 0 cm之间 ,采伐地土壤水分在 0— 40 0 cm一般高于空旷地 ,40 0— 6 0 0 cm低于空旷地 ,空旷地地表土壤水分是三者中最低的更多还原

【Abstract】 MATLAB, an advanced computer language used for scientific calculation, is introduced. It was used to analyze the data on soil moisture in bare land, felled forestry land and Chinese pineland obtained by the long term measure. The result showed that the soil moisture in the Chinese pineland was the least at the depth of 40—600 cm among the three type of land, which indicated that Chines pine mainly consumed the water in that soil layer. Soil moisture in felled land was more at the depth of 0—400 cm and less at the depth of 400—600 cm than that in bare land. The topsoil moisture in the bare land was the least among the three kinds of land.更多还原