Jemez River Basin Soil Solution Chemistry 2012 (New Mexico, USA)

Abstract: Soil solution samples in the Jemez River Basin field sites of the Catalina-Jemez Critical Zone Observatory (CZO) are collected with two types of soil solution samples: i) Prenart Super Quartz suction cups (www.prenart.dk). Prenart suction cups are optimized for all chemistry analyses and were installed without addition of Si-slurry to allow for artifact-free Si analyses. Applied suction for each Prenart is ~ 60kPa. ii) Custom made, fiberglass wick-based passive capillary wick samplers (PCaps, Perdrial et al. 2012). PCaps are optimized for water flux determination and sampling for organic carbon, most anions and metals. PCap samples should however not be used for major cations (Na, Mg, Si, K, Ca) and dissolved inorganic carbon because of artifacts from the fiberglass materials (see Perdrial et al (2014) for a complete list). Passive suction, based on the length of the hanging water column, is ~3 kPa. Soil solution samplers were installed in each of six pedons in the Mixed Conifer Zero Order Basin (MC-ZOB) and the fire impacted site (2011 Burned ZOB) at 3 (PCaps) and 4 (Prenarts) depths, respectively. Pedon locations were selected to capture differences in catchment aspect (MC-ZOB SE facing: Pit 3 and 4, NW facing: Pit 1 and 6), landscape position (MC-ZOB: hollow Pit 2 and 5, planar Pit 1 and 6, divergent Pit 3, convergent Pit 4), elevation and burn severity (co-varying in 2011 Burned ZOB: low Pit 1 and 2, mid Pit 3, high Pit 4 to 6). All samplers are collocated with Decagon soil moisture and temperature probes.

Other Description: Perdrial, J.N., Perdrial, N., Harpold, A., Gao, X., LaSharr, K.M., Chorover, J. (2012) Impacts of sampling dissolved organic matter with passive capillary wicks versus aqueous soil extraction. Soil Science Society of America Journal, 76: 2019-2030, doi: 10.2136/sssaj2012.0061.

Vazquez-Ortega, A., Perdrial, J., Harpold, A., Zapata-Rios, X., Rasmussen, C., McIntosh, J., Schaap, M., Pelletier, J. D., Brooks, P. D., Amistadi, M. K., and Chorover, J. (2015) Rare earth elements as reactive tracers of biogeochemical weathering in forested rhyolitic terrain. Chemical Geology, 391: 19-32, doi: 10.1016/j.chemgeo.2014.10.016.

Perdrial, J. N., Perdrial, N., Vazquez-Ortega, A., Porter, C., Leedy, J., and Chorover, J. (2014) Experimental Assessment of Passive Capillary Wick Sampler Suitability for Inorganic Soil Solution Constituents. Soil Science Society of America Journal, 78(2): 486-495, doi: 10.2136/sssaj2013.07.0279.

Vazquez-Ortega, A., Huckle, D., Perdrial, J., Amistadi, M. K., Durcik, M., Rasmussen, C., McIntosh, J., Chorover, J. (2016) Solid-phase redistribution of rare earth elements in hillslope pedons subjected to different hydrologic fluxes. Chemical Geology, 426: 1-18, doi: 10.1016/j.chemgeo.2016.01.001.

摘要：卡塔利娜-赫梅兹关键带观测站（Catalina-Jemez Critical Zone Observatory, CZO）赫梅兹河流域野外点位的土壤溶液样品采用两类采样方案获取：
i) Prenart超石英吸力采样杯（Prenart Super Quartz suction cups，网址：www.prenart.dk）。该类采样杯针对全化学分析优化，安装时未添加硅基浆料，以实现无人工干扰的硅元素分析。每个Prenart采样杯的施加吸力约为60kPa。
ii) 定制式玻璃纤维灯芯被动毛细采样器（PCaps, Perdrial等，2012）。PCaps针对水通量测定、有机碳、多数阴离子及金属元素的采样进行了优化，但由于玻璃纤维材料带来的人工干扰，其采样结果不可用于主要阳离子（钠Na、镁Mg、硅Si、钾K、钙Ca）及溶解无机碳的分析，完整禁用组分列表可参考Perdrial等（2014）的研究。该采样器的被动吸力基于悬垂水柱高度设定，约为3kPa。

土壤溶液采样器分别布设至混合针叶林零级流域（Mixed Conifer Zero Order Basin, MC-ZOB）与2011年火灾影响点位（2011 Burned ZOB）的6个土壤剖面（pedon）中，其中PCaps的布设深度为3层，Prenart采样杯的布设深度为4层。
土壤剖面点位的选取旨在覆盖流域朝向（MC-ZOB的东南朝向采样坑3、4，西北朝向采样坑1、6）、景观位置（MC-ZOB：洼地采样坑2、5，平坦坡面采样坑1、6，发散坡采样坑3，汇聚坡采样坑4）、海拔及火烧烈度（2011 Burned ZOB的火烧烈度随海拔梯度变化：低烈度采样坑1、2，中烈度采样坑3，高烈度采样坑4至6）的差异。所有采样器均与Decagon土壤水分及温度探头配套布设。

其他说明：
Perdrial, J.N.、Perdrial, N.、Harpold, A.、Gao, X.、LaSharr, K.M.、Chorover, J.（2012）：被动毛细灯芯采样法与土壤水溶液萃取法采集溶解性有机质的影响对比，《美国土壤学会学报》（Soil Science Society of America Journal），76卷：2019-2030，DOI: 10.2136/sssaj2012.0061。
Vazquez-Ortega, A.、Perdrial, J.、Harpold, A.、Zapata-Rios, X.、Rasmussen, C.、McIntosh, J.、Schaap, M.、Pelletier, J.D.、Brooks, P.D.、Amistadi, M.K.、Chorover, J.（2015）：稀土元素作为森林流纹岩地貌生物地球化学风化的反应示踪剂，《化学地质学》（Chemical Geology），391卷：19-32，DOI: 10.1016/j.chemgeo.2014.10.016。
Perdrial, J.N.、Perdrial, N.、Vazquez-Ortega, A.、Porter, C.、Leedy, J.、Chorover, J.（2014）：被动毛细灯芯采样器对土壤溶液无机组分适用性的实验评估，《美国土壤学会学报》，78(2)卷：486-495，DOI: 10.2136/sssaj2013.07.0279。
Vazquez-Ortega, A.、Huckle, D.、Perdrial, J.、Amistadi, M.K.、Durcik, M.、Rasmussen, C.、McIntosh, J.、Chorover, J.（2016）：不同水文通量下坡地土壤剖面中稀土元素的固相再分布，《化学地质学》，426卷：1-18，DOI: 10.1016/j.chemgeo.2016.01.001。