The Influence of Seedlings Height on the Growth of Pine in Artificial Stands

Complete text of the article:

Download article (pdf, 0.4MB )

UDС

630*232

DOI:

10.17238/issn0536-1036.2015.1.158

Abstract

The researches were carried out on the territory of Pereslavl district, Yaroslavl region, to find out how the seedlings height of Scotch pine (Pinus Sylvestris) influence on their growth in artificial stands. The research aimed to identify an ideal height of 2-year old seedlings of Scotch pine to establish artificial stands in the conditions of fresh ordinary subor. More than 150 parts of pine artificial stands were examined. In autumn the terminal shoots of Pinus Sylvestris with different height of planting stock were measured for the further calculation of the current height increment by different years of artificial stands growth. The current increments of the plants were calculated for the 2-year old artificial stands (establishment phase), 4 and 6-year old ones (individual growth phase) as well as 8-year old plants (late individual growth phase and early crown of closing phase). In total, 2750 terminal shoots were measured in artificial stands. The measurements of terminal shoots increments were made for the plants with different heights of planting stock ranging from 4 to 18 cm. The smallest seedlings as well as the biggest ones have their own worst rates of current height increments. The 8 to 13 cm height of 2-year old seedlings should be considered to be optimal for the given region and the habitat type. The optimal height of 2-year old pine seedlings is a result of the positive interaction of plants in the habitat genotype. A balanced combination of fast growth and adaptive capacity of artificial stands occur at these species. This is a very important property as in artificial stands growing the quickness of plants growing  allows to reduce an individual growth phase and in forestry practice to transfer young plantations to the forested lands. We have revealed the optimal height of 2-year old seedlings that covers an average size of planting stock growing in the survey plot. Besides, according to the normal distribution law more seedlings fall within this size category than within the marginal sizes of height. So, the most seedlings will be suitable for artificial stands establishment in seeding section in case high agricultural techniques are applied.

Authors

M.D. Merslenko1, Doctor of Agriculture, Professor M.Y. Zakharova2, Postgraduate Student

Affiliation

1Institute of Forest Science, Russian Academy of Sciences, Sovetskaya, 21, Uspenskoe, Moscow region, 143030, Russia; е-mail: md.merzlenko@mail.ru  2Moscow State Forest University, 1st Institutskaya, 1, Mytischi, 141005; Russia;  е-mail:zaharova@mgul.ac.ru

Keywords

seedlings, scotch pine, artificial stands, terminal shoot, the optimal height of planting stock.

References

1. Barannik A.B. Lesovodstvennaya effektivnost' sozdaniya kul'tur eli ukrupnennymi seyantsami v taezhnoy zone [Silvicultural Efficiency of Spruce Crops Creating by Enlarged Seedlings in the Taiga Zone]. Lesnoe khozyaystvo, 1978, no. 4, p. 47. 2. Gan P.A. Vliyanie vozrasta i vysoty posadochnogo materiala na sostoyanie kul'tur eli tyan'shanskoy [Influence of Age and Height of Planting Stock on the State of Spruce Crops of Tien Shan]. Lesovedenie, 1982, no. 4, pp. 82–85. 3. Kurnaev S.F. Lesorastitel'noe rayonirovanie SSSR [Forest Vegetation Regionalization of USSR]. Moscow, 1974. 203 р. 4. Markova I.A. Agrotekhnika i tekhnologiya sozdaniya vysokoproduktivnykh kul'tur eli i sosny promyshlennymi metodami na severo – zapade RSFSR: Avtoref. diss. … doct. s. – kh. nauk [Farming Techniques and Creating Technology of Highly Productive Spruce and Pine Crops by Industrial Methods in the North West of the Russian Federation: Autoref. Diss…. Doct. Agric.Sci]. Leningrad, 1989. 32 р. 5. Merzlenko M.D., Gurtyachenko Yu. G. Optimal'naya vysota trekhletnikh seyantsev eli [The Optimum Height of a Three-Year Spruce Seedlings]. Lesokhozyaystvennaya informatsiya, 1990, no. 11, рр. 30–31. 6. Moyko M. F., Kovalev M. S. Rost lesnykh kul'tur v zavisimosti ot razmerov seyantsev [Artificial Stands Growth Depending on the Size of Seedlings]. Lesnoe khozyaystvo, 1977, no. 1, рр. 52–54. 7. Murmanskaya N.P. Znachenie sortirovki seyantsev sosny v usloviyakh Arkhangel'skoy oblasti [Sort Value of Pine Seedlings in the Conditions of the Arkhangelsk Region]. Zashchitnoe lesorazvedenie i lesnye kul'tury [Protective Afforestation and Artificial Stands]. Voronezh, 1977, iss. 4, рр. 106–111. 8. OST 56–98–93. Seyantsy i sazhentsy osnovnykh drevesnykh i kustarnikovykh porod. Tekhnicheskie usloviya [Industry Standard 56-98-93. Seedlings and Saplings Wood and Shrub Species. Specifications]. 1993, 40 р. 9. Pigarev F. T., Belyaev V.V., Sungurov R. V. Kompleksnaya otsenka posadochnogo materiala i ego primenenie na Evropeyskom Severe [Comprehensive Assessment of Planting Stock and its Application in the European North]. Arkhangelsk, 1987, 14 р. 10. Pisarenko A. I., Red'ko G. I., Merzlenko M. D. Iskusstvennye lesa [Homogeneous Forests]. Moscow, 1992, 240 р.