论文部分内容阅读
以莲花湖库区落叶松水源涵养林为研究对象,由入渗速率拟合入渗模型,运用地统计学理论与方法对模型参数进行空间异质性分析。结果表明:采用Philip公式对入渗过程进行数学模拟最佳,模型参数吸渗率和稳渗率均服从对数正态分布,空间相关性强,结构比分别为0.867、0.759,变程分别为29.13 m、6.16 m,分维数分别为1.786、1.970。两者块金值都很小,小尺度内非连续性变异不明显,空间分布格局相类似,空间自相关范围内呈极显著正相关关系,相关系数R为0.48。二者相比,吸渗率空间自相关尺度大,空间分布较简单;稳渗率均一性差,空间分布复杂,破碎化程度高。
The water conservation forest of Larix principis-rupprechtii in Lianhua Lake reservoir area was taken as the research object. The infiltration rate was fitted to the infiltration model, and the spatial heterogeneity of the model parameters was analyzed by geostatistical theory and method. The results show that the Philip equation is the best method to simulate the infiltration process. The model parameters of infiltration rate and steady infiltration rate obey the logarithm normal distribution, the spatial correlation is strong, the structural ratios are 0.867,0.759, 29.13 m, 6.16 m, fractal dimension respectively is 1.786,1.970. The gold value of the two blocks is very small, the non-continuity variation is not obvious in the small scale, the spatial distribution pattern is similar, the spatial autocorrelation has a significant positive correlation, the correlation coefficient R is 0.48. Compared with the two, the self-correlation scale of the rate of the imbibition is large and the spatial distribution is relatively simple. The homogeneity of the infiltration rate is poor, the spatial distribution is complex and the degree of fragmentation is high.