DETERMINATION OF PHENOLOGICAL PERIODS OF TREES BY THE METHOD OF CONDUCTOMETRY
Journal Title: International journal of ecosystems and ecology science (IJEES) - Year 2018, Vol 8, Issue 2
Abstract
The electrical conductivity of the near-cambium layer of four tree species in the Southern Baikal region was measured for two years: Pinus sibirica Du Tour., Abies sibirica Ledeb., Betula pendula and Picea obovata var. coerulea Malysh. The electrical conductivity of all the selected species has been established to vary from almost zero level to values above 20 μS depending on the season. This conductivity variation interval has two distinct ranges: 1) 0 - 13 μS; 2) 14 - 22 μS. The first range is typical for trees that are in the stage of induced or deep dormancy, the second – for a period of a high physiological activity. Changes from one to the other range are associated with the onset of different natural seasons and usually occur quite rapidly. During the periods of the winter rapid thaw (the period of the induced dormancy), the level of electrical conductivity, which we conventionally accepted as a criterion characteristic of the spring-summer vegetation, does not significantly exceed 20 μS in all trees, but it can enter the “start” boundary of the spring phase change in fir and cedar.
Authors and Affiliations
Victor I. Voronin*, Victor A. Krasnobaev
Keywords
Related Articles
- EP ID EP279499
- DOI -
- Views 89
- Downloads 0
DOPPLER ULTRASONOGRAPHY WAVEFORMS CHANGES IN IUGR AND THEIR VALUES IN THE RELEVANT MANAGEMENT OF PREGNANCY
Intrauterine Growth Restriction (IUGR) means the ultrasonography recording by estimated foetal weight (EFW) below than 10th percentile for its gestational age. This group includes foetuses that do not reach their genetic...
MOLDOVA'S CODRY – PRIORITY REGION FOR BIODIVERSITY CONSERVATION
One of the priority regions of biodiversity conservation in the Republic of Moldova is the Central Region of Codry, where unlike other regions, the share of natural ecosystems is satisfactory and their functionality is r...
DETERMINATION OF PHENOLOGICAL PERIODS OF TREES BY THE METHOD OF CONDUCTOMETRY
The electrical conductivity of the near-cambium layer of four tree species in the Southern Baikal region was measured for two years: Pinus sibirica Du Tour., Abies sibirica Ledeb., Betula pendula and Picea obovata var. c...
EVALUATION OF HEAVY METAL POLLUTION IN SURFACE SOILS IN ZANJAN PROVINCE, IRAN
Increases of heavy metals in soils are harmful to the environment and human health. Heavy metals in soils originate from both natural and anthropogenic sources. Zanjan province in Iran due to industrial and mining activi...
BIOMASS ALLOCATION IN RELATION TO PRECIPITATION, TEMPERATURE AND SOIL PROPERTIES IN THE GRASSLAND OF CORUH RIVER BASIN, TURKEY: USING STRUCTURAL EQUATION MODELLING WITH AMOS
Aboveground biomass (AGB) and belowground biomass (BGB) of grasslands are important parameters for characterizing regional and global carbon cycles in grassland ecosystems. Compared with the relatively detailed informati...