scholarly journals Hydrochemical Fluxes in Bulk Precipitation, Throughfall, and Stemflow in a Mixed Evergreen and Deciduous Broadleaved Forest

Forests ◽  
2019 ◽  
Vol 10 (6) ◽  
pp. 507 ◽  
Author(s):  
Lei Su ◽  
Changming Zhao ◽  
Wenting Xu ◽  
Zongqiang Xie
Keyword(s):  
Tree Species ◽  
Nutrient Balance ◽  
Ammonium Nitrogen ◽  
Central China ◽  
Primary Sources ◽  
Deciduous Tree ◽  
Nutrient Concentrations ◽  
Bulk Precipitation ◽  
Chemical Inputs ◽  
Canopy Water

Rainfall is one of the primary sources of chemical inputs in forest ecosystems, and the basis of forest nutrient cycling. Mixed evergreen and deciduous broadleaved forests are currently one of the most threatened ecosystems due to their sensitivity to anthropogenic climate change. As such, understanding the hydrochemical fluxes of these systems is critical for managing their dynamics in the future. We investigate the chemistry of bulk precipitation, stemflow and throughfall in a mixed evergreen and deciduous broadleaved forest in the Shennongjia region of Central China. Mean nutrient concentrations in throughfall and stemflow were higher than in bulk precipitation. Stemflow ion fluxes from deciduous tree species were greater than those for evergreen tree species because of the differences in bark morphology and branch architecture. Throughfall and stemflow chemistry fluctuated dramatically over the growing season. Nitrate nitrogen and ammonium nitrogen were retained, while other elements and compounds were washed off or leached via throughfall and stemflow pathways. Our findings will facilitate a greater understanding of nutrient balance in canopy water fluxes.

scholarly journals Hydrochemical Fluxes in Rainfall, Throughfall, and Stemflow in Pinus sylvestris var. mongolica Plantation, northeast China

2021 ◽  
Keyword(s):  
Nutrient Cycling ◽  
Pinus Sylvestris ◽  
Urban Forest ◽  
Nutrient Balance ◽  
Growing Season ◽  
Urban Trees ◽  
Primary Sources ◽  
Nutrient Concentrations ◽  
Harbin City ◽  
Chemical Inputs

<p>Rainfall is one of the primary sources of chemical inputs in forest ecosystems, and the basis of forest nutrient cycling. Urban trees play an important role in the built environment, reducing the rainfall reaching the ground by rainfall interception. To explore the variations of nutrient cycling and nutrient balance in rainfall redistribution process in urban forest ecosystem, we investigated the chemistry of rainfall, throughfall and stemflow in a plantation of Pinus sylvestris var. mongolica distributed in Harbin city of Northeastern China. Mean nutrient concentrations in stemflow were higher than in throughfall and rainfall. Over the growing season observation, the nutrients (NO3-, PO43-, SO42-, Cl-, F-, K, Ca and Mg) fluxes in rainfall, throughfall and stemflow were 66.392 kg·ha-1, 46.900 kg·ha-1 and 15.723 kg·ha-1 respectively. The net throughfall and stemflow deposit was -3.769 kg·ha-1, in the growing season. The nutrient input in precipitation, throughfall and stemflow were mainly NO3-, SO42- and Ca, and the canopy of P. sylvestris var. mongolica plantation can net leaching of NO3- and Mg in rainfall, but filter out of PO43-, SO42-, Cl-, F-, K and Ca slightly. Our findings will facilitate a greater understanding of nutrient balance in canopy water fluxes in an urban area.</p>

scholarly journals The impact of juvenile tree species canopy on properties of new forest floor

2013 ◽  
Vol 59 (No. 6) ◽  
pp. 230-237 ◽  
Author(s):  
D. Kacálek ◽  
D. Dušek ◽  
J. Novák ◽  
J. Bartoš
Keyword(s):  
Tree Species ◽  
Forest Floor ◽  
Deciduous Tree ◽  
Nutrient Concentrations ◽  
Multivariate Techniques ◽  
Forest Site ◽  
Mixed Stands ◽  
New Forest ◽  
Forest Floors ◽  
The Impact

To keep forest soils fertile, forest practitioners plant mixed stands that are composed of both economically efficient trees such as conifers and soil-improving broadleaves. This is a mandated practice in the Czech Republic. As the new forest grows, it creates a dense canopy. The canopy is a principal source of organic matter to the forest soil. The formation of new forest humus is particularly important in first-generation forests on the former agricultural soil. Former meadow is a suitable site for forest floor and soil investigation since forest-floor humus covering the surface of the soil is a completely new layer.&nbsp; Both pure evergreen conifer and mixed treatments were planted in 2001. The experimental plot was established in order to investigate performance of tree species and restoration of forest-site conditions. We sampled dead-plant material and 0&ndash;10 cm topsoil to investigate their properties under the 10-year-old stands. We compared the treatments by descriptive statistics using both univariate and multivariate techniques. Dry mass (medians of weight) varied among the treatments from 11 to 19 Mg&middot;ha<sup>&ndash;1</sup>. The forest floor nutrient concentrations appeared to be dependent on the presence of admixed deciduous tree species (sycamore maple, small-leaved linden and European larch) as these forest floors (EL1, EL2, NS3, SM) were higher in base cations and phosphorus compared to pure spruce (NS1, NS2) and pure Douglas fir (DF) treatments. The first axis of PCA ordination plot revealed 45% of total variability and showed a clear distinction between evergreen coniferous and mixed species treatments. Young plantations produced forest floors of different quality; however it was not reflected in the topsoil properties. &nbsp;

Purification of plasma membranes from leaves of conifer and deciduous tree species by phase partitioning and free-flow electrophoresis

1995 ◽  
Vol 95 (3) ◽  
pp. 399-408 ◽  
Author(s):  
Elena Toll ◽  
Federico J. Castillo ◽  
Pierre Crespi ◽  
Michele Crevecoeur ◽  
Hubert Greppin
Keyword(s):  
Tree Species ◽  
Plasma Membranes ◽  
Free Flow ◽  
Deciduous Tree ◽  
Phase Partitioning

Differences between height- and light-dependent changes in shoot traits in five deciduous tree species

Oecologia ◽  
2013 ◽  
Vol 174 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Noriyuki Osada ◽  
Yoshihiko Okabe ◽  
Daisuke Hayashi ◽  
Tomonori Katsuyama ◽  
Naoko Tokuchi
Keyword(s):  
Tree Species ◽  
Deciduous Tree

How anatomical and morphological characteristics affect the flexural properties of two angiosperm species at the sapling stage

BioResources ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. 5843-5858
Author(s):  
Seray Özden Keleş
Keyword(s):  
Tree Species ◽  
Ring Width ◽  
Morphological Characteristics ◽  
Deciduous Tree ◽  
Flexural Properties ◽  
Functional Stability ◽  
Growth Stability ◽  
Fagus Orientalis Lipsky ◽  
Angiosperm Species ◽  
Common Oak

The sapling stage is an important phase due to maintaining plant growth, stability, and survival over the life cycle of trees. However, there are limited investigations in the literature related to both growth and stability of different tree species. This study thus investigated how different tree species at the sapling stage showed different anatomical, morphological, and flexural traits despite being of similar age and growing under the same environmental conditions. The variation of sapling properties was determined in two deciduous tree species: common oak (Quercus robur L.) and Oriental beech (Fagus orientalis Lipsky). The results of anatomical and morphological measurements showed that the highest average values of ray length, ray width, pith radius, pith%, bark%, and node numbers were obtained in oak saplings, whereas average ring width, number of rays, and wood% were found to be higher in beech saplings. Oak also exhibited better functional stability in its saplings. The flexural properties were almost 60% greater in oak stems than beech stems. The variations in flexural properties were explained by the morphological and anatomical traits since stability was positively correlated with pith radius, pith%, and bark% and negatively correlated with the number of rays and wood%.

DIFFERENTIAL PARASITISM OF MACROLEPIDOPTERAN HERBIVORES ON TWO DECIDUOUS TREE SPECIES

Ecology ◽  
2001 ◽  
Vol 82 (3) ◽  
pp. 698-704 ◽  
Author(s):  
P. Barbosa ◽  
A. E. Segarra ◽  
P. Gross ◽  
A. Caldas ◽  
K. Ahlstrom ◽  
...  
Keyword(s):  
Tree Species ◽  
Deciduous Tree ◽  
Differential Parasitism

scholarly journals ASSESSMENT OF WATER QUALITY AND POLLUTION LOAD IN TEJASWINI RIVER NEAR THE MALAVETTUVAN TRIBAL SETTLEMENT, CHERUPUZHA PANCHAYATH, KERALA, INDIA

2017 ◽  
Vol 4 (3) ◽  
pp. 71-74
Author(s):  
Sangeeth Thekkan ◽  
Renjini Haridas ◽  
Paulsamy S
Keyword(s):  
Water Quality ◽  
River Water ◽  
Forest Canopy ◽  
Water Quality Assessment ◽  
Primary Sources ◽  
Human Consumption ◽  
Physico Chemical ◽  
Calcium Magnesium ◽  
Domestic Use ◽  
Canopy Water

Rivers are one of the primary sources of water for drinking, irrigation and other domestic purposes.The present study deals with the water quality assessment of Tejaswini river of Cherupuzha Panchayath, Kannur district, Kerala. The water samples collected from five different sites were analyzed for parameters such as temperature, color, pH, BOD, DO, calcium, magnesium and Escherichia coli. The analysis of the physico– chemical and microbiological characters of the river water indicated that the water quality study of site I was affected severely because the study site is very near to the tribal settlements and also the tribes use thisarea mainly for sewage disposal. Study site II, III, IV and V, which are away from the tribal settlement, the river water is not polluted as it is very far away from the tribal settlement and also nearer to forest canopy. Water from study site I which not suitable for drinking and other domestic use. Therefore, source protectionis suggested for the site I water bodies for the benefit of mankind because it is not safe for human consumption.

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