Nutrient Fluxes in Rainfall, Throughfall, and Stemflow in Pinus densata Natural Forest of Tibetan Plateau. Issue 7 (26th May 2017)

• Record Type: Journal Article
• Authors: Lu, Jie; Zhang, Shuoxin; Fang, Jiangping; Yan, Hongan; Li, Jiangrong
• Is Part Of: Clean. Volume 45:Issue 7(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-05-26
• Subjects: Atmospheric deposition -- Canopy exchange -- Chemical composition -- Dry deposition -- Forest ecosystem nutrient balance; Water quality -- Periodicals; Water -- Pollution -- Periodicals; Pollution -- Periodicals; Bioremediation -- Periodicals; Sewage -- Periodicals; Water chemistry -- Periodicals; 333.7205
• DOI: 10.1002/clen.201600008
• Languages: English
• ISSNs: 1863-0650

Abstract

Abstract : This study aimed to measure the chemical components of the rainfall, throughfall, and stemflow, and to evaluate the characteristics of the solutes in the Pinus densata forest in Tibetan plateau. Rainfall, throughfall, and stemflow were monitored from March 2011 to November 2013. The pH and concentrations of N H 4 + −N, N O 3 − −N, S O 4 2 − −S, Cl −, Na +, K +, Ca 2+, and Mg 2+ were measured. Depositions of rainfall, throughfall, and stemflow, and canopy budget of different solutes were calculated. There were significant correlations among throughfall, stemflow, and rainfall. The monthly pH of the three forms of water was significantly different between each other. The annual average concentrations of the solutes showed the following order: stemflow>throughfall>rainfall. The annual mean rainfall depositions of rainfall, throughfall, and stemflow were 104.20, 175.54, and 16.60 kg ha −1 · per year, respectively. Annual net throughfall and stemflow deposit was 87.94 kg ha −1 · per year. The main source of N H 4 + −N and N H 3 − −N came from rainfall while S O 4 2 − −S, Cl −, Na +, K +, Ca 2+, and Mg 2+ input mainly came from the throughfall. Settlement of NH4 + ‐N was close to the global average, N O 3 − −N, S O 4 2 − −S, Cl −, K +, Mg 2+ were above the global average, and Na + and Ca 2+ were slightly lower than the global average. The rainfall may have the potential to supply nutrients in the P. densata forest in the Tibetan plateau. Abstract : Pinus densata is a dominant species in the Tibetan plateau, playing an important role in maintaining water balance, as well as soil and water conservation. Rainfall, throughfall, and stemflow and pH, and several ion concentrations in the P. densata forest are monitored. The experiments evidence that rainfall may have the potential to supply nutrients in the P. densata forest.