Santa Catalina Mountains Soil Solution Chemistry 2019 (Arizona, USA)

Soil solution samples in the Santa-Catalina Mountain field sites of the Catalina-Jemez Critical Zone Observatory (CZO) are collected with three types of soil solution samples: i) Prenart Super Quartz suction cups (www.prenart.dk), ii) SoilMoisture suction cups (SoilMoisture Equipment Corp., Santa Barbara, CA), and iii) custom made zero-tension sampler (Hinckley et al., 2008). Prenart suction cups are optimized for all chemistry analyses and were installed with and without addition of Si-slurry at the Mount Bigelow and Marshall Gulch/Oracle Ridge study sites, respectively. Applied suction for each Prenart is ~ 50kPa and SoilMoisture suction cups are sampled with a suction of 70-80kpa. Both suction cup types are optimized for all chemistry analyses with the exception of dissolved organic matter in the case of the SoilMoisture ones (due to potential sorption of DOM on the porous ceramic material). Zero-tension samplers are optimized for water flux determination at saturated flow and sampling for various chemistry analyses. In Marshall Gulch, there are 8 SoilMoisture suction cups in the schist site and 7 in the granite site in both convergent and divergent landscape positions. These soil solution samplers are co-located with piezometers measuring water table depth within the soil profile. In the Oracle Ridge site, there are 8 pedons each equipped with 2 Prenarts and 1 SoilMoisture ceramic cup lysimeter. These samplers are co-located with Decagon Em5b data loggers with EC-5 soil moisture sensors and ECT soil temperature sensors. The B2 Desert Schist and a Granite sites are both equipped with 7 zero-tension samplers (Hinckley et al., 2008) in both divergent and convergent landscape positions as well one SoilMoisture ceramic cup lysimeter. These samplers are co-located with Decagon Em5b data loggers with EC-5 soil moisture sensors and ECT soil temperature sensors. In the Bigelow ZOB site, there are 4 pedons each equipped with 4 Prenarts co-located with Decagon 5TE soil moisture and MPS-6 matric potential sensors, Vaisala GMM220 CO2 sensors, and Apogee SO-110 O2 sensors, and platinum electrode sensors for redox potential, connected to Campbell Sci CR1000 data logger.

在凯塔利纳-杰梅兹关键地带观测站（CZO）的圣-卡塔利娜山脉野外研究点，采集了三种类型的土壤溶液样本：i) Prenart超级石英吸盘（www.prenart.dk），ii) 土壤湿度吸盘（土壤湿度设备公司，加利福尼亚州圣巴巴拉），以及iii) 定制制作的零张力采样器（Hinckley等，2008年）。Prenart吸盘针对所有化学分析进行了优化，并在大比格洛山和马歇尔峡谷/奥拉利奇研究点分别安装了带和不带Si悬浮液。每个Prenart的吸力约为50kPa，而土壤湿度吸盘则以70-80kPa的吸力进行采样。这两种吸盘类型均针对所有化学分析进行了优化，但土壤湿度吸盘在溶解有机物方面除外（由于DOM可能吸附于多孔陶瓷材料）。零张力采样器针对饱和水流条件下的水分通量测定以及各种化学分析进行了优化。在马歇尔峡谷，片麻岩地点有8个土壤湿度吸盘，花岗岩地点也有8个，分别在汇聚和发散的景观位置。这些土壤溶液采样器与测量土壤剖面中地下水位的水压计共位。在奥拉利奇地点，每个土柱都配备了2个Prenart和1个土壤湿度陶瓷杯蒸渗仪。这些采样器与Decagon Em5b数据记录器以及EC-5土壤湿度传感器和ECT土壤温度传感器共位。在B2沙漠片麻岩和花岗岩地点，均在发散和汇聚的景观位置配备了7个零张力采样器（Hinckley等，2008年），以及一个土壤湿度陶瓷杯蒸渗仪。这些采样器与Decagon Em5b数据记录器以及EC-5土壤湿度传感器和ECT土壤温度传感器共位。在大比格洛ZOB地点，每个土柱配备了4个Prenart，与Decagon 5TE土壤湿度传感器和MPS-6基质势传感器、Vaisala GMM220 CO2传感器、Apogee SO-110 O2传感器以及用于氧化还原电位的铂电极传感器相连，并通过Campbell Sci CR1000数据记录器连接。