Application of an electronic micropenetrometer to assess mechanical stability of biological soil crusts
Application of an electronic micropenetrometer to assess mechanical stability of biological soil crusts
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应用电子微贯入仪评估生物土壤结皮的机械稳定性
DOI：
10.1002/jpln.201200291
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发表时间：
2013
影响因子：
2.5
通讯作者：
Felix-Henningsen
中科院分区：
文献类型：
--
作者：
Drahorad;Felix-Henningsen
在沿陡峭降雨梯度的两个研究点进行了生物土壤结皮稳定性的现场测定。用新研制的轻质针式电子微渗仪测量结壳的渗透阻力(PR)。与深度相关的PR数据显示，两个剖面具有不同的结构和稳定性。表层结皮(0-2 mm)的N、有机碳、碳酸盐和盐类含量显著高于下垫层。南部研究区Nizzana-South(≈100 mm年降雨量)的平均PR为0.68 Mpa，北部研究区Nizzana-69(≈170 mm年降雨量)的PR显著增加，平均为1.11 Mpa。鉴定出一种次地壳(2-30 mm)，其特征是高含量的碳酸盐和PR>；2 Mpa。电子微渗透系统是一种很有前途的设备，可以用来识别与土壤-结皮生物特性有关的结皮稳定性变化区域。生物土壤结皮的整体稳定性取决于上、下结皮结构。这种结构与非生物和生物因素有关，并可能与年降水量有关。
Anin situdetermination of biological soil‐crust stability was carried out in two study sites along a sharp rainfall gradient. Penetration resistance (PR) of the crusts was measured using a newly developed light‐weight needle‐type electronic micropenetrometer. The depth‐related PR data revealed two sections possessing different structures and stability. The topcrust (0–2 mm) had significantly higher amounts of N, organic C, carbonates, and salts as compared to the underlain subcrust. The mean PR of the topcrust was 0.68 MPa for the southern study site, Nizzana‐South (≈ 100 mm annual rainfall), and it increased significantly for the northern study site, Nizzana‐69 (≈ 170 mm annual rainfall), with a mean of 1.11 MPa. A subcrust (2–30 mm) was identified that was characterized by a high amount of carbonates and a PR > 2 MPa. The electronic micropenetrometer system is a promising device for identifying areas of changing crust stability in relation to biological soil‐crust properties. The overall stability of biological soil crusts depends on the topcrust and subcrust structure. This structure is linked to abiotic and biotic factors and likely in relation to the amount of annual precipitation.
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影响因子：
4.9
作者：
F. Maestre;J. Cortina
通讯作者：
F. Maestre;J. Cortina
影响因子：
6.4
作者：
R. Nativ;A. Issar;J. Rutledge
通讯作者：
J. Rutledge
用于生物土壤结皮稳定性现场测量的电子微贯入仪 (EMP)
影响因子：
2.5
作者：
Drahorad;Felix-Henningsen
通讯作者：
Felix-Henningsen
一种根据电导率估算土壤饱和提取物中总溶解盐的新方法
影响因子：
4.2
作者：
M. Simón;O. Cabezas;I. García;P. Martinez
通讯作者：
P. Martinez