Nutrient balance in Scots pine (Pinus sylvestris L.) forest. 5. Tree growth in a field plot experiment

1995 ◽  
Vol 85 (3) ◽  
pp. 1143-1148 ◽  
Author(s):  
Petter Nilsen ◽  
Gunnar Abrahamsen
2019 ◽  
Vol 26 (01) ◽  
pp. 85-93
Author(s):  
Batsaikhan G ◽  
Battulga P ◽  
Baterdene J ◽  
Gerelbaatar S ◽  
Tsogtbaatar J

This study was conducted in planted forests located in the Tujyin Nars National Park territory of Selenge province, Mongolia. We aimed at studying the effect of climate factors on seedling survival and tree growth at the Scots pine plantations. A total of five 50 x 20 m (0.1 ha) sized square sample plots were established at the plantations, planted between 2003 and 2007. All field measurements and data collection were carried out annually in September and October between 2003 and 2017. Annual field measurements of seedlings included: tree health status, diameter at stem basis, total height and annual height increments. We used climate data taken from the closest meteorological station (8-15 km to the north-west), “Sukhbaatar” located in Sukhbaatar Soum of Selenge province. To calculate the statistical analysis of the survival rate and seedling growth, we used the one-way analysis of variance (ANOVA) method to determine statistically significant differences in means among variables between the sites. An F-test and Pearson's correlation coefficient were used to assess the relationships between climate variables and survival and tree growth. Our findings showed a significant difference (F=28.4, p<0.001) between seedling survival among plantations planted in different years of plantation establishment. The study revealed that there is a strong negative correlation (r=-0.76) between seedling survival and number of critical dry days, and contrary, strong positive correlation (r =0.71) with the precipitation for May. The increment of planted trees was more sensitive to air temperature (r = 0.47), annual rainfall (r = 0.72), air relative humidity and number of dry days during the first three years than in subsequent years. Таримал өсвөр нарсан (pinus sylvestris l.) ойн амьдралт, өсөлтөнд уур амьсгалын үзүүлэх нөлөө Хураангуй  Тус судалгааг Сэлэнгэ аймгийн Алтанбулаг, Шаамар сумын нутагт ойжуулалтаар тарьж  ургуулсан таримал нарсан ойд гүйцэтгэв. Судалгааны ажлын зорилго нь таримал ойн моддын  амьдралт, өсөлтөнд уур амьсгалын үзүүлэх нөлөөг судлахад оршино. Судалгаанд 2003-2007  онуудад ойжуулсан таримал ойн мониторинг судалгааг 2003 -2017 онуудад жил бүр  тасралтгүй гүйцэтгэлээ. Ойжуулсан талбай бүрд 50 х 20 м (1000 м2) хэмжээтэй дээж  талбайг байгуулан, түүнд таримал модны эрүүл байдал, ишний өндөр, диаметрийн өсөлт  болон титмийн өндрийг хэмжив. Ишний шинжилгээний дээжид модны өндрийн болон  диаметрийн өсөлтийн хэмжилтийг хийсэн ба уур амьсгалын үзүүлэлтэд судалгааны талбайд  хамгийн ойр (10 км) орших Сэлэнгэ аймгийн цаг уурын ажиглалтын “Сүхбаатар” станцын  2003-2017 оны хугацаанд дахь цаг уурын мэдээг ашиглав. Хэмжилтийн статистик  үзүүлэлтүүдийг боловсруулахад нэг хүчин зүйлт вариансийн шинжилгээ (ANOVA), модны  өндөр, диаметрийн өсөлтийн явц болон уур амьсгалын үзүүлэлтүүд хоорондын хамаарлыг  Персоны корреляцын коэффициеитээр илэрхийлэв. Судалгааны үр дүнгээс үзвэл, ялгаатай цаг  хугацаанд ойжуулсан талбайн моддын амьдралт статистикийн хувьд ялгаатай (F=28.4,  p<0.001), ялангуяа 5-р сарын хэт хуурайшилттай өдрийн үргэлжлэх хугацаа (r=-0.76),  ургамал ургалтын хугацааны агаарын температур, хур тунадасны нийлбэр (5-р сар r =0.71,  6- сар r=0.41, 7- сар r= 0.46) - тэй хүчтэй, эерэг хамааралтай байна. Ойжуулалтанд  шилжүүлсний дараах тарьцын хоёр болон гурав дахь жилийн нийлбэр өндрийн өсөлт, жилийн  дундаж агаарын температур (r = 0.47), диаметрийн өсөлт нь жилийн нийлбэр хур  тунадастай (r = 0.72) эерэг, хүчтэй хамааралтай байна.  Түлхүүр үг: Ойжуулалт,өндөр, диаметр, цаг уур, хамаарал 


Trees ◽  
1998 ◽  
Vol 13 (1) ◽  
pp. 19-27 ◽  
Author(s):  
W. Oberhuber ◽  
M. Stumböck ◽  
Werner Kofler

2020 ◽  
Vol 12 (22) ◽  
pp. 9479
Author(s):  
Baiba Jansone ◽  
Valters Samariks ◽  
Modris Okmanis ◽  
Dārta Kļaviņa ◽  
Dagnija Lazdiņa

Wood ash recycling can be a reasonable method for energy producers to decrease waste problems. Using wood ash as a fertilizer or liming material could improve soil macro and micronutrient content in peat soils. Therefore, the effect of wood ash on Norway spruce (Picea abies (L.) Karst) and Scots pine (Pinus sylvestris L.) juvenile growth and nutrient content in the soil after spreading wood ash in medium to high doses before and after planting seedlings was investigated in peat forests in the Eastern part of Latvia. The aim of the study was to evaluate the effect of high doses of wood ash on soil properties and the growth of planted Norway spruce and Scots pine seedlings up to 10 years after experiment establishment. Wood ash was applied a year before planting seedlings in doses of 5 and 10 t ha−1 and right after planting in concentrations of 5, 10, 15, and 20 t ha−1. Changes in macronutrient content (i.e., phosphorus [P], and potassium [K]) and tree height and diameter at breast height were measured at one and 10 years after establishing the experiment. Fertilization one year prior to planting the seedlings exhibited a positive response on tree height and diameter growth compared to fertilization after the seedlings were planted. Soil samples from fertilized plots one year after establishment contained more P and K in the soil than the control plots. Wood ash application of the highest doses did not reach the overdose limit, as the tree growth (height and diameter at breast height) results of fertilized plots were similar to those of the control fields; therefore, no significant negative effect on tree growth was discovered.


2014 ◽  
Vol 3 (4) ◽  
pp. 36-43
Author(s):  
Tatiana A. Mikhailova ◽  
Olga V. Kalugina ◽  
Olga V. Shergina ◽  
Ekaterina N. Taranenko

The study was focused on the relation between deterioration of vital state parameters of Scots pine (Pinus sylvestris L.) tree-stands polluted by various technogenic sources, and the level of polluting agents accumulation in the needles. Changes in the balance of the most important biogenic elements and their proportion in the needles of polluted trees have been shown. The results confirm systemic character of polluting agents impact on tree-stands vital state. It may be presumed to show in the following order: polluting agents accumulation in assimilating organs → disbalance of elements composition of plant organism → disturbance of plant organism nutritious conditions → disturbance of tree growth characteristics → reduction of tree-stands productivity.DOI: http://dx.doi.org/10.3126/ije.v3i4.11729International Journal of EnvironmentVolume-3, Issue-4, Sep-Nov 2014Page: 36-43


Sign in / Sign up

Export Citation Format

Share Document