和田河下游灌丛沙堆表层沉积物粒度和分形特征
肖佳奇, 武胜利, 陈鹏鹏

Grain size and fractal characteristics of surface sediments of nebkhas in the lower reaches of Hetian River, Xinjiang, China
Jiaqi Xiao, Shengli Wu, Pengpeng Chen
表4 不同沙堆表层沙物质分形维数( y )与粒度参数( x )相关关系及回归分析
Table 4 Correlation between fractal dimension and particle size parameters and regression analysis of surface sand material in different nebkhas
沙堆类型指标沙堆部位R2相关系数显著性线性回归方程
胡杨沙堆平均粒径迎风坡坡脚0.51-0.717*y = -0.7620x + 1.7727
迎风坡坡中0.17-0.414**y = -0.4408x + 2.4924
沙堆顶部0.20-0.789**y = -0.0737x + 3.3238
背风坡坡中0.31-0.557**y = -0.4022x + 2.6398
背风坡坡脚0.36-0.603*y = -0.6501x + 1.9927
分选系数迎风坡坡脚0.11**
迎风坡坡中0.100.478*y = 0.1351x + 0.4969
沙堆顶部0.150.441**y = 0.2988x + 0.1470
背风坡坡中0.170.408*y = 0.3481x + 0.0791
背风坡坡脚0.600.778y = 0.4522x + 1.4626
偏度迎风坡坡脚0.03**
迎风坡坡中0.240.489**y = 0.1735x - 0.2693
沙堆顶部0.180.564**y = 0.0867x - 0.0868
背风坡坡中0.300.547y = 0.1744x - 0.2462
背风坡坡脚0.240.490y = 0.0303x + 0.0552
峰态迎风坡坡脚0.130.370*y = 0.2700x + 0.5898
迎风坡坡中0.170.409**y = 0.3046x + 0.5192
沙堆顶部0.140.470**y = 0.2322x + 0.6571
背风坡坡中0.240.485y = 0.4054x + 0.3800
背风坡坡脚0.100.696*y = 0.2055x + 0.9796
柽柳沙堆平均粒径迎风坡坡脚0.88-0.672**y = -1.6247x+0.1061
迎风坡坡中0.78-0.664**y = -1.1905x+1.0565
沙堆顶部0.89-0.846**y = -2.2724x-1.0718
背风坡坡中0.82-0.789**y = -1.2724x-0.1087
背风坡坡脚0.54-0.738**y = -0.7955x+1.8425
分选系数迎风坡坡脚0.530.548**y = -0.4218x+1.6587
迎风坡坡中0.180.429**y = -0.1129x+0.6821
沙堆顶部0.910.526**y = 1.5763x-2.3577
背风坡坡中0.870.637**y = 4.1017x-7.8004
背风坡坡脚0.210.467**y = 0.2758x+0.2966
偏度迎风坡坡脚0.510.713**y = 0.1627x-0.3165
迎风坡坡中0.760.876y = 0.5792x-1.0504
沙堆顶部0.890.827**y = 0.4719x-0.7774
背风坡坡中0.800.789**y = 2.7188x - 5.6404
背风坡坡脚0.630.911**y = 0.3617x - 0.6767
峰态迎风坡坡脚0.810.903*y = 0.5057x + 0.0898
迎风坡坡中0.680.826*y = 0.6906x - 0.1019
沙堆顶部0.860.824*y = 0.6576x + 0.0077
背风坡坡中0.820.711*y = 5.6368x - 10.6810
背风坡坡脚0.630.798*y = 0.3340x + 0.4564