Variations of 7Be concentration in plants and its significance for 7Be in soil on the Loess Plateau, China: Based on three-year monitoring data
Variations of 7Be concentration in plants and its significance for 7Be in soil on the Loess Plateau, China: Based on three-year monitoring data
复制标题
黄土高原植物中 7Be 浓度变化及其对土壤 7Be 的意义：基于三年监测数据
DOI：
10.1007/s11104-022-05453-x
复制
发表时间：
2022-05
期刊：
影响因子：
--
通讯作者：
Mingyi Yang
中科院分区：
文献类型：
--
作者：
Xuantian Li;Fengbao Zhang;Yanxing He;Claudio O. Delang;Mingyi Yang
目的随着7 Be（Berken-7）在土壤侵蚀研究中的广泛应用，植被对7 Be的截留和截留在土壤中7 Be再分布的记录中起着重要作用，并对7 Be测量结果的解释产生很大影响。然而，植物体内7 Be的动态变化和时间变化及其与土壤中7 Be浓度的关系尚不清楚，植物死亡在7 Be截留中的意义也未得到充分研究。（6个不同的物种），综合植物（包括活的和死的植物），在黄土高原地区，以土壤为参照物，分别采集沿着土壤样品，分析了7 Be浓度在生长期内的变化，结果7 Be在叶中的累积量显著高于茎。活植物中7 Be活度的季节变化范围分别为173.9 ~ 703.1 Bq kg-1和21.5 ~ 190.1 Bq m-2，死植物中7 Be活度的季节变化范围分别为381.8 ~ 964.5 Bq kg-1和30.4 ~ 285.7 Bq m-2。降水对植物体内7 Be积累的贡献最大，其次是植物生长、种和部位。坡面植物对7 Be的截留率高达66%，其中活植物占7% ~ 31%，死植物占6% ~ 44%。活体植物对7 Be的截留量先低后高，随着降雨量和生物量的积累而增加，对7 Be的截留量随降雨量和生物量的增加而增加，对7 Be的截留量随降雨量的增加而增加，对7 Be的截留量随降雨量的增加而增加。本工作所获得的参考信息将有助于提高7 Be示踪技术的准确性，拓宽其应用范围。
AimsWith the wide application of 7Be (Beryllium-7) in soil erosion investigations, retention and interception of 7Be by vegetation plays an important role in documenting soil 7Be redistribution, with a large impact on the interpretation of 7Be measurements. However, the dynamic and temporal changes in plants and the relationship with soil 7Be concentration remain unclear, and the significance of dead plants in 7Be interception is under-researched.MethodsThe samples of single plants (6 different species), compositive plants (including living and dead plants), along with soil reference on the Loess Plateau were collected individually to analyze the variations of 7Be concentration during the growth period from 2010 to 2012.ResultsThe accumulation of 7Be per mass is significantly higher in leaves than stems. The 7Be activity per mass and per area in living plants with seasonal trends ranged from 173.9 to 703.1 Bq kg–1 and 21.5 to 190.1 Bq m–2, respectively, and in dead plants ranged from 381.8 to 964.5 Bq kg–1 and 30.4 to 285.7 Bq m–2. Precipitation accounted for the largest contribution to the accumulation of 7Be in plants, followed by plant growth, species and parts. Plants accounted for 7Be interception on slope up to 66% (living plants accounted for 7% ~ 31% and dead plants accounted for 6% ~ 44%). The interception of living plants is low at first, then increases with the accumulation of rainfall and biomass together.ConclusionsOur results highlight that 7Be in plants (especially for the dead plants) is of great significance for 7Be in soil on the slope, and is controlled by precipitation, growth status and plant characteristics. The reference information obtained in this work will contribute to improving the accuracy of 7Be tracing technology, and broadening its scope.
登录
查看更多内容
影响因子：
1.6
作者：
Zhang, Fengbao;Yang, Mingyi;Zhang, Bo
通讯作者：
Zhang, Bo
影响因子：
2.4
作者：
P. Schuller;A. Iroumé;D. Walling;Héctor B Mancilla;A. Castillo;R. E. Trumper
通讯作者：
P. Schuller;A. Iroumé;D. Walling;Héctor B Mancilla;A. Castillo;R. E. Trumper
影响因子：
2.3
作者：
M. Pöschl;T. Brunclík;J. Hanak
通讯作者：
M. Pöschl;T. Brunclík;J. Hanak
影响因子：
2.9
作者：
Mingyi Yang;D. Walling;J. Tian;Pu-ling Liu
通讯作者：
Mingyi Yang;D. Walling;J. Tian;Pu-ling Liu
影响因子：
--
作者：
C. Olsen;I. Larsen;P. Lowry;N. Cutshall;J. F. Todd;G. Wong;W. Casey
通讯作者：
C. Olsen;I. Larsen;P. Lowry;N. Cutshall;J. F. Todd;G. Wong;W. Casey