Santa Catalina Mountains Soil Solution Chemistry 2015 (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.卡塔利娜-赫梅斯临界带观测站（Catalina-Jemez Critical Zone Observatory, CZO）圣卡塔利娜山野外站点的土壤溶液样品采集采用三类土壤溶液采样装置：① Prenart超石英吸力杯（Prenart Super Quartz suction cups，www.prenart.dk）；② SoilMoisture吸力杯（SoilMoisture Equipment Corp.，加利福尼亚州圣巴巴拉市）；③ 定制零张力采样器（custom made zero-tension sampler，Hinckley等，2008）。 Prenart吸力杯适配全类型化学分析，比格洛山研究站点布设了添加硅浆（Si-slurry）的装置，而马歇尔峡谷/甲骨文岭研究站点则布设了未添加硅浆的装置。每台Prenart吸力杯的施加吸力约为50kPa，SoilMoisture吸力杯的采样吸力为70~80kPa。两类吸力杯均适配全类型化学分析，但SoilMoisture吸力杯因溶解态有机质（dissolved organic matter, DOM）可能在多孔陶瓷材料上发生吸附，无法用于溶解态有机质分析。定制零张力采样器适配饱和流条件下的水通量测定及多类化学分析采样。 在马歇尔峡谷，片岩场地布设8台SoilMoisture吸力杯，花岗岩场地布设7台，两类场地均覆盖汇水与分水景观位置。这些土壤溶液采样装置与测定土壤剖面内地下水位深度的渗压计（piezometers）同点布设。 在甲骨文岭站点，共设8个土壤单体（pedon），每个土壤单体配备2台Prenart超石英吸力杯与1台SoilMoisture陶瓷杯式蒸渗仪。这些采样装置与搭载EC-5土壤湿度传感器、ECT土壤温度传感器的德卡根（Decagon）Em5b数据记录仪同点布设。 B2沙漠片岩与花岗岩场地均在汇水与分水景观位置布设7台定制零张力采样器（Hinckley等，2008），并配备1台SoilMoisture陶瓷杯式蒸渗仪。这些采样装置同样与搭载EC-5土壤湿度传感器、ECT土壤温度传感器的德卡根（Decagon）Em5b数据记录仪同点布设。 在比格洛ZOB站点，共设4个土壤单体，每个土壤单体配备4台Prenart超石英吸力杯，同点布设的设备包括：德卡根（Decagon）5TE土壤湿度与MPS-6基质势传感器、维萨拉（Vaisala）GMM220二氧化碳传感器、阿波吉（Apogee）SO-110氧气传感器，以及用于测定氧化还原电位的铂电极传感器，上述设备均连接至坎贝尔科学（Campbell Sci）CR1000数据记录仪。