包兰铁路沙坡头段防护体系研究综述
顿耀权, 屈建军, 康文岩, 王涛

Progress and prospect of research on the protective system of Shapotou section of the Baotou-Lanzhou Railway
Yaoquan Dun, Jianjun Qu, Wenyan Kang, Tao Wang
表1 不同年限固沙植被区表层土壤的理化性质[68]
Table 1 Physico-chemical properties of the top soil in vegetation regions with different stabilization time-spans[68]
土壤性质固沙年限/a天然 植被区
022324957
沙粒含量/%99.6778.8771.5468.2866.3913.54
粉粒含量/%0.1215.6023.5924.7922.5972.00
黏粒含量/%0.214.544.876.9311.0114.45
有机碳含量/(g·kg-10.371.654.327.597.7420.54
全氮含量/(g·kg-10.170.220.520.741.022.07
全磷含量/(g·kg-10.400.440.710.750.771.38
结皮层及亚土层厚度/cm00.721.402.202.504.87
藻-地衣结皮盖度/%06.911.831.239.041.4
藓类结皮盖度/%049.854.057.556.556.7
藻-地衣结皮下细菌数量/(×104 cfu·g-1)0.455.305.986.448.189.92
藓类结皮下细菌数量/(×104 cfu·g-1)0.395.036.396.588.5212.29
藻-地衣结皮下土壤基础呼吸CO2/(mg·g-1·d-10.0080.0160.0160.0180.0200.021
藓类结皮下土壤基础呼吸CO2/(mg·g-1·d-10.0080.0180.0200.0210.0210.023