The carbon uptake of a mid latitude pine forest growing on sandy soil

2002 ◽  
Vol 111 (3) ◽  
pp. 157-170 ◽  
Author(s):  
A.J. Dolman ◽  
E.J. Moors ◽  
J.A. Elbers
Keyword(s):  
Sandy Soil ◽  
Pine Forest ◽  
Carbon Uptake

scholarly journals Plants and biological soil crust influence the hydrophysical parameters and water flow in an aeolian sandy soil / Vplyv rastlín a biologického pôdneho pokryvu na hydrofyzikálne parametre a prúdenie vody v piesočnatej pôde

2012 ◽  
Vol 60 (4) ◽  
pp. 309-318 ◽  
Author(s):  
Ľubomír Lichner ◽  
Ladislav Holko ◽  
Natalia Zhukova ◽  
Karsten Schacht ◽  
Kálmán Rajkai ◽  
...  
Keyword(s):  
Water Flow ◽  
Sandy Soil ◽  
Forest Soils ◽  
Preferential Flow ◽  
Biological Soil Crust ◽  
Water Repellency ◽  
Pine Forest ◽  
Wetting Front ◽  
Soil Water Repellency ◽  
Grassland Soil

This study tested the hypothesis that the changes in hydrophysical parameters and heterogeneity of water flow in an aeolian sandy soil have the same trend as the process of succession. Three sub-sites were demarcated at the area of about 50 m x 50 m. The first sub-site was located at the pine-forest glade covered with a biological soil crust and represented the initial stage of succession. The second sub-site was located at the grassland and represented more advanced stage of succession. The third sub-site was located at the pine forest with 30-year old Scots pines and represented advanced stage (close to climax) of succession. The sandy soil at the surface was compared to the soil at the pine-forest glade at 50 cm depth, which served as a control because it had a similar texture but limited impact of vegetation or organic matter. It was found that any type of vegetation cover studied had a strong influence on hydrophysical parameters and heterogeneity of water flow in an aeolian sandy soil during hot and dry spells. The changes in some hydrophysical parameters (WDPT, R, k(-2 cm), Sw(-2 cm), ECS and DPF) and heterogeneity of water flow in an aeolian sandy soil had the same trend as the process of succession, but it was not so in the case of Ksand Se(-2 cm), probably due to the higher content of smaller soil particles in grassland soil in comparison with that content at other sub-sites. Both the persistence and index of water repellency of pure sand differed significantly from those of grassland, glade and forest soils. The highest repellency parameter values in forest soil resulted in the lowest value of both the water sorptivity and hydraulic conductivity in this soil in comparison with other soils studied. The highest value of ethanol sorptivity and the lowest value of saturated hydraulic conductivity in the grassland soil in comparison with other soils studied were due to the higher content of fine-grained (silt and clay) particles in the grassland soil. The effective cross section and the degree of preferential flow of pure sand differed significantly from those of grassland, glade and forest soils. The change in soil hydrophysical parameters due to soil water repellency resulted in preferential flow in the grassland, glade and forest soils, while the wetting front in pure sand area exhibited a form typical of that for stable flow. The latter shape of the wetting front can be expected in the studied soils in spring, when soil water repellency is alleviated substantially. The columnar shape of the wetting front, which can be met during heavy rains following long dry and hot spells, was attributed to redistribution of applied water on the surface to a series of micro-catchments, which acted as runon and runoff zones.

Long turnover time and large sequestration potentials in a dry pine forest based on 15-year flux and inventory records

2020 ◽  
Author(s):  
Rafat Qubaja ◽  
Jose Grünzweig ◽  
Eyal Rotenberg ◽  
Dan Yakir
Keyword(s):  
Temperate Forests ◽  
Mean Value ◽  
Turnover Time ◽  
Pine Forest ◽  
Rate Of Change ◽  
Carbon Accumulation ◽  
Forest Plantations ◽  
Carbon Uptake ◽  
Land Area ◽  
Semi Arid

<p>A large terrestrial carbon sink significantly influences the rate of change in atmospheric CO<sub>2</sub> concentrations, but uncertainties associated with its estimate are considerable. Here we combined carbon stock (CS) and eddy covariance (EC) flux measurements that were collected over a period of 15 years (2001-2016) in a 55-year-old 30 km<sup>2</sup> pine forest growing at the semi-arid timberline (with no irrigating or fertilization). The objective was to constrain estimates of the carbon (C) storage potential in forest plantations in such semi-arid lands, which cover ~18 % of the global land area. Annual integrated carbon accumulation was 145-160 g C m<sup>-2</sup> y<sup>-1</sup> over the study period based on the EC and CS approaches, with a mean value of 152.5 ± 30.1 g C m<sup>-2</sup> y<sup>-1</sup> indicating 20 % uncertainty in carbon uptake estimates. This carbon uptake reflect high carbon use efficiency NEP/GPP of 29 compared to ~21 in temperate forests, leading to the current ecosystem stocks of 7943 ± 323 g carbon m<sup>-2</sup> and 372 g nitrogen m<sup>-2</sup>. In addition, carbon is mostly stored in the soil (~71 % of the current ecosystem C stock), with a long C turnover time of 59 ± 4 y (compared to mean value of 18 years in temperate forests). It is also estimated that soil carbon at the study site constitutes only ~25 % of the estimated soil saturation capacity. Irrespective of un-expected disturbances beyond those observed at the study site, the results support considerable C sink potential in semi-arid soils and forest plantations, and imply that afforestation of even 10 % of semi-arid land area under conditions similar to that of the study site, could sequester ~0.4 Pg C y<sup>-1</sup> over several decades.</p>

scholarly journals Supplementary material to "No tropospheric ozone impact on the carbon uptake by a Belgian pine forest"

2016 ◽  
Author(s):  
Lore Verryckt ◽  
Maarten Op de Beeck ◽  
Johan Neirynck ◽  
Bert Gielen ◽  
Marilyn Roland ◽  
...  
Keyword(s):  
Tropospheric Ozone ◽  
Pine Forest ◽  
Carbon Uptake ◽  
Supplementary Material

Heterogeneous solute flow in a sandy soil under a pine forest: evaluation of a modeling concept

2001 ◽  
Vol 164 (6) ◽  
pp. 601-610 ◽  
Author(s):  
Markus Deurer ◽  
Wilhelmus H. M. Duijnisveld ◽  
Jürgen Böttcher ◽  
Gunther Klump
Keyword(s):  
Sandy Soil ◽  
Pine Forest ◽  
Solute Flow ◽  
Modeling Concept

Water flux components and soil water-atmospheric controls in a temperate pine forest growing in a well-drained sandy soil

2008 ◽  
Vol 113 (G4) ◽  
Author(s):  
Joshua D. McLaren ◽  
M. Altaf Arain ◽  
Myroslava Khomik ◽  
Matthias Peichl ◽  
Jason Brodeur
Keyword(s):  
Soil Water ◽  
Sandy Soil ◽  
Water Flux ◽  
Pine Forest

EVALUATION OF CLOVERS ON SANDY COASTAL SOIL

1977 ◽  
pp. 130-138 ◽  
Author(s):  
W.M. Williams ◽  
L.B. Anderson ◽  
B.M. Cooper
Keyword(s):  
New Zealand ◽  
Drought Stress ◽  
Sandy Soil ◽  
White Clover ◽  
Plant Material ◽  
Red Clover ◽  
Early Spring ◽  
Commercial Cultivars ◽  
Mediterranean Origin ◽  
Winter Annual

In evaluations of clover performances on summer-dry Himatangi sandy soil, it was found that none could match lucerne over summer. Emphasis was therefore placed on production in autumn-winter- early spring when lucerne growth was slow. Evaluations of some winter annual clover species suggested that Trifolium spumosum, T. pallidum, T. resupinatum, and T. vesiculosum would justify further investigation, along with T. subterraneum which is already used in pastures on this soil type. Among the perennial clover species, Kenya white clover (7'. semipilosum) showed outstanding recovery from drought and was the only species to produce significantly in autumn. However, it failed to grow in winter-early spring. Within red clover, materials of New Zealand x Moroccan origin substantially outproduced the commercial cultivars. Within white clover, material from Israel, Italy and Lebanon, as well as progeny of a selected New Zealand plant, showed more rapid recovery from drought stress and subsequently better winter growth than New Zealand commercial material ('Grasslands Huia'). The wider use of plant material of Mediterranean origin and of plants collected in New Zealand dryland pastures is advocated in development of clover cultivars for New Zealand dryland situations.

Fertilizer effects in a triticale monoculture on sandy soil

2014 ◽  
Vol 63 (2) ◽  
pp. 283-294
Author(s):  
Imre Kádár ◽  
Péter Ragályi
Keyword(s):  
Sandy Soil ◽  
List Type

Az MTA ATK TAKI Őrbottyáni Kísérleti Telepén karbonátos homoktalajon beállított NPK műtrágyázási tartamkísérlet 36–43. évében, 2006 és 2013 között vizsgáltuk a műtrágyázás hatását a tritikále fejlődésére, termésére és elemfelvételére. A termőhely talaja a főbb tápelemekben (N, P, K) gyengén ellátott, a szántott réteg 1% körüli CaCO3-ot és 1% humuszt tartalmaz. Az altalaj erősen karbonátos, az agyagos rész 5–10%. A talajvíz 8–10 m mélyen található, a terület aszályérzékeny. Évente a P- (0, 60, 120 kg P2O5·ha−1) és K-műtrágyákat (0, 100, 200, 300, 400 kg K2O·ha−1) ősszel szántás előtt, valamint a N (0, 80, 160 kg N·ha−1) felét ősszel, a másik felét tavasszal szórtuk ki 25%-os pétisó, 18%-os szuperfoszfát és 50%-os kálisó formájában. A kísérletből levonható főbb tanulságok:Talajgazdagító PK-műtrágyázás eredményeképpen a kontrolltalaj igen gyenge PK-ellátottsága a kielégítő 150–200 mg·kg−1 NH4-acetát+EDTA-oldható tartományba emelkedett a kísérlet 41. évében (2011-ben). A szuperfoszfáttal végzett trágyázás eredményeképpen igazolhatóan nőtt a feltalaj oldható S- és Sr-tartalma, mely az alkalmazott hazai Kóla-alapú/nyersanyagú eredetre vezethető vissza. A hazai szuperfoszfátok 18–22% körüli elemi Ca-, 13% S-, 7–8% P-, 1–2% Srkészlettel rendelkeztek.Nemcsak a homoktalaj rendkívül heterogén, hanem a rajta fejlődő termés mennyisége is extrém szórásokat mutatott. Az évek és kezelések között egy nagyságrendet elérő különbségek adódtak. Az évek átlagait tekintve ötszörös eltéréseket tapasztaltunk. Az „évhatások” kifejezettek voltak. Termésdepresszió léphet fel egyaránt az aszály/vízhiány és a túlbő csapadék fennállása esetén.A P-kínálattal nőtt a növényi részek P-, Mn- és Sr-készlete, míg a beépült Znmennyiség visszaesett. Fellépett a P-Mn szinergizmus, illetve a P-Zn antagonizmus. A Mo-koncentráció a növekvő NPK-műtrágyázással a szalmában 1/3-ára, a szemtermésben a felére zuhant.A vizsgált nyolc év alapján még nem ítélhető meg, hogy a tritikále mennyire alkalmas a monokultúrás termesztésre, de összevetve a telepen 52 éves ún. „örökrozs” kísérletünkkel, ez lehetővé válhat a jövőben.

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