黑河上游土壤水文异质性观测试验数据（2012-2014）

黑河流域上游土壤容重，孔隙度，含水量，水分特征曲线，饱和导水率，颗粒分析，入渗率，以及采样点位置信息。

1、数据为2014年针对2012年补充取样，用环刀取原状土；
2、该土壤容重为土壤干容重，采用烘干法测量。将野外采集的原状环刀土样在烘箱中以105℃恒温24小时，土壤干重除以土壤体积（100立方厘米），单位：g/cm3 。
3、土壤孔隙度，根据土壤容重与土壤孔隙度的关系得到；，
4、土壤入渗分析数据集，数据为2013-2014年野外实验测量数据。
5、入渗数据是用“MINI DISK PORTABLE TENSION INFILTROMETER”进行测量，得到一定负压下的近似饱和导水率。
6、土壤粒度数据是在兰州大学西部教育部重点实验室粒度实验室进行测量。测量仪器为马尔文激光粒度仪MS2000。
7、饱和导水率是依据依艳丽(2009)的定水头发自制仪器进行测量。使用马利奥特瓶在实验过程中始终保持定水头；同时最后将当时测量的Ks转化为10℃时的Ks值进行分析计算。
8、土壤含水量数据是用ECH2O进行测量，包括5层的土壤含水量、土壤温度。
9、水分特征曲线采用离心机法测量：将野外采集的环刀原状土放入离心机，分别用转速0，310，980，1700，2190，2770，3100，5370，6930，8200，11600测量每次的转子重量得到。

Soil bulk density, porosity, soil water content, water retention curve, saturated hydraulic conductivity, particle size analysis, infiltration rate, and sampling point location information in the upper reaches of the Heihe River Basin.

1. The data were supplementary sampled in 2014 for the 2012 field campaign, using intact soil cores collected with ring knives.
2. The reported soil bulk density refers to dry bulk density, measured via the drying method. Collected intact ring knife soil samples were dried in an oven at a constant temperature of 105°C for 24 hours. Dry soil bulk density is calculated as the ratio of soil dry weight to soil volume (100 cm³), with the unit of g/cm³.
3. Soil porosity was derived based on the empirical relationship between soil bulk density and porosity.
4. The soil infiltration analysis dataset was acquired from field experiments conducted between 2013 and 2014.
5. Infiltration data were measured using a "MINI DISK PORTABLE TENSION INFILTROMETER", which yields the approximate saturated hydraulic conductivity under a specified negative pressure.
6. Soil particle size data were measured in the Particle Size Laboratory of the Key Laboratory of Western China's Environmental Systems (Ministry of Education) at Lanzhou University, using the Malvern Mastersizer MS2000 laser particle size analyzer.
7. Saturated hydraulic conductivity (Ks) was measured using a self-made constant-head apparatus following the method described by Yi Yali (2009). A Mariotte bottle was utilized to maintain a constant water head throughout the experimental process. Furthermore, all measured Ks values were converted to Ks values at 10°C for subsequent analysis and calculation.
8. Soil water content data were measured using the ECH2O system, including soil water content and soil temperature at 5 soil depths.
9. The water retention curve was measured via the centrifugation method: Collected intact ring knife soil samples were placed in a centrifuge, and the rotor weight was measured at rotational speeds of 0, 310, 980, 1700, 2190, 2770, 3100, 5370, 6930, 8200, and 11600, respectively.

搜集汇总

背景与挑战

背景概述

该数据集是黑河上游2012年至2014年的土壤水文观测数据，包含土壤容重、孔隙度、含水量、饱和导水率等关键参数，通过多种专业方法测量，用于研究土壤水文异质性及其空间分布。数据以开放获取方式提供，支持高亚洲地区的环境和水文研究。