Methodische Untersuchungen zur Durchführung von Nadelanalysen in Kiefernbeständen

Wehrmann, J.

doi:10.1007/bf01822233

Cited by 39 publications

(10 citation statements)

References 15 publications

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“…From 1964until 2007 the nutritional status of the stands at all plots was assessed annually (Pfaffenwinkel) or at least every second year (Pustert) by foliar analysis. To avoid confounding effects of bioelement translocation processes during the growing season on foliar bioelement concentrations (Wehrmann, 1959), needles were sampled during the period of winter dormancy from the uppermost crown of 12 dominant trees at each plot. From the pooled current-year needles of each plot, representative samples were ground and analyzed for P, N, and other nutrients.…”

Section: Assessment Of Topsoil P Status and P Nutrition Of The Forestmentioning

confidence: 99%

Long-term trends of phosphorus nutrition and topsoil phosphorus stocks in unfertilized and fertilized Scots pine (Pinus sylvestris) stands at two sites in Southern Germany

Prietzel

Stetter

2010

Forest Ecology and Management

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Section: Assessment Of Topsoil P Status and P Nutrition Of The Forestmentioning

confidence: 99%

Long-term trends of phosphorus nutrition and topsoil phosphorus stocks in unfertilized and fertilized Scots pine (Pinus sylvestris) stands at two sites in Southern Germany

Prietzel

Stetter

2010

Forest Ecology and Management

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“…Von je 10 Pftanzen wurden die letztjahrigen Nadein Anfang Februar geerntet. Da sich nach WEHRMANN (1959) die Nahrstoffkonzentration in Kiefernnadeln erst ab April stark verandert, diirften die Werte nodi etwa jenen nach abgeschlossener Wadistumsperiode entsprechen.…”

Section: Methodeunclassified

“…Von je 10 Pftanzen wurden die letztjahrigen Nadein Anfang Februar geerntet. Da sich nach WEHRMANN (1959) (LEVITT 1958).…”

Section: Methodeunclassified

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Wachstum, Mykorrhiza und Frostresistenz von Fichtenjungpflanzen bei Düngung mit verschiedenen Stickstoffgaben

Pümpel

Gôbl²,

Tranquillini³

1975

European Journal of Forest Pathology

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Growth, mycorrhiza and frost resistance of Picea abies seedlings following fertilization with different levels of nitrogen. NPK fertilization with varying levels of nitrogen causes increased growth of spruce seedlings and faster flushing in spring. During the growing season, the frost resistance of all organs of the plants, especially new needles and shoots is the lower, the more nitrogen the plants have received. Consequently, spruce plantations, especially at high altitudes, may be liable to late frost damage. Einleitung

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“…The nutritional status of coniferous stands was assessed by chemical analysis of the concentrations of nutrients in halfyear-old needles at the crown top of representative trees (about ten sample trees per stand) performed in fall, when a b Stand height refers to mean height of sample trees at age 50 at stump height 0.2 m. Yield Tables used as growth reference: Scots pine stands: sites 202, 203 Wiedemann (1949), sites 801-807 Lembcke et al (1975Lembcke et al ( , 2000, sites 1,501, 1,519, 1,523 Vuokila and Väliaho (1980), Norway spruce stands: sites 201, 301 Assmann and Franz (1963), sites 601, 602 Marschall (1992), sites 1,510, 1,524, 1,525 Vuokila and Väliaho (1980) seasonal fluctuations of nutritional levels are at a minimum (Wehrmann 1959) (Diagnostic Foliar Analysis). The plausibility of the values was checked by the ranges applied by FIMCI (EC-UN/ECE 2000).…”

Section: Characterisation Of Stand Nutritionmentioning

confidence: 99%

Relationships between long-term trends of air temperature, precipitation, nitrogen nutrition and growth of coniferous stands in Central Europe and Finland

et al. 2008

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Height growth of 19 Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) stands in Germany, Austria and Finland, for which long-term records of foliar nutrient levels were available, was assessed retrospectively by stem analyses and compared with data from regionally applied yield tables as references. Gridded historical time series of monthly temperature and precipitation were used to characterise the meteorologic conditions at the sampling sites. Climate parameters were tested against height growth in period 1950-2000, and needle N content was tested against height growth for the periods where N measurements were available by means of graphical comparison, as well as simple and multiple regression analyses with the aim to get evidence for causes of possible growth acceleration. Trends of referenced height increment of six out of nine Scots pine stands in Germany were positive during the observation period, and improved N nutrition appeared to be the most important driving factor for this growth acceleration. The variation of precipitation-exhibiting no consistent and uniform long-term temporal trend during the observation period-in contrast seems to be mainly responsible for the interannual fluctuation of height growth. We were not able to detect any general statistical influence of temperature parameters on height growth, although they generally increased. The referenced height growth of three Finnish pine stands slightly decreased during the observation period and there was no indication of a significant improvement of their N supply. Among four Norway spruce stands investigated in Germany and Austria, referenced height increment also increased in three cases; there was again some evidence that improved N nutrition was the stimulating factor. At three study sites in Finland, however, referenced height growth of this species decreased at least from 1985 onwards, whereas mostly no significant trends in N nutrition or precipitation were identified. These differences observed between species and regions are discussed in detail.

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Methodische Untersuchungen zur Durchführung von Nadelanalysen in Kiefernbeständen

Cited by 39 publications

References 15 publications

Long-term trends of phosphorus nutrition and topsoil phosphorus stocks in unfertilized and fertilized Scots pine (Pinus sylvestris) stands at two sites in Southern Germany

Long-term trends of phosphorus nutrition and topsoil phosphorus stocks in unfertilized and fertilized Scots pine (Pinus sylvestris) stands at two sites in Southern Germany

Wachstum, Mykorrhiza und Frostresistenz von Fichtenjungpflanzen bei Düngung mit verschiedenen Stickstoffgaben

Relationships between long-term trends of air temperature, precipitation, nitrogen nutrition and growth of coniferous stands in Central Europe and Finland

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