Biomass of vegetation and LAI of grasslands in Orgovány LTER (KISKUN LTER)

Basic Information
Related Site
Orgovany Site, KISKUN LTER - Hungary
Abstract
The aim of the yearly biomass and LAI measurements in the grasslands is to study the effect of weather to the plant production along a productivity gradient. Aboveground living plant biomass and LAI data from 24-30 grassland patches in Orgovány region of Kiskunság (Kiskunság National Park) along a productivity gradient from open sand grassland to reedbed, yearly from 2003 to 2012, were sampled approx. at the time of maximum aboveground biomass. The size of the patches are 20 to 50 sq-m, and each year one 0.5 by 0.5 m sampling unit is selected within each patch. The patches are permanent ones; some of them were omitted and replaced because of disturbance in several years. The aboveground living plant biomass data of separate species are submitted in HU_SI001199_species_biomass_20130508 dataset, and the EUNIS habitat types of the sampled patches are submitted in HU_SI001199_eunis_habitat_type_20130508 dataset.
Keywords
aboveground biomass
LAI (Leaf Area Index)
Contact
Miklós Kertész
Owner/Creator
Miklós Kertész
Metadata Provider
Miklós Kertész
Gábor Ónodi
UUID
f9e89c94-e7de-11e2-a655-005056ab003f
Dates
Date Range
Post date
Monday, July 8, 2013 - 16:59
Last modified
Tuesday, January 18, 2022 - 21:39
Downloads
Online Locator
Distribution Function
Web address (URL)
Distribution URL
Grassland LAI and biomass data from Orgovány LTER site 2003-2012
Additional information
Method Description
Biomass in grasslands was measured by harvesting all herbs and plant material over a small parcel of 0.25 m2. In mown grassland, sampling was made right before mowing. Otherwise, the sampling was made approx.at the time of the maximum LAI. As much as possible, clipping was made right at the level of the ground. All plant material was dried at 60?C until constant weight.From the dried material three fractions were separated: (1) plant material which was dead in the time of clipping, (2) non-photosynthesising living material, and (3) photosynthesising material.Biomass species was calculated by summing up the dry weight of all living material belong to a species, and expressed in grams / m2. (Spatial Scale Description: In the point of maximum depth of the lake. Water samples are collected at different depths (surface, 1, 2.5, 5, 7.5, 10, 15, 20 and at intervals of 10 m to the bottom) with a Niskin bottle and placed in a dark cooler box and packed in ice at the time of collection)
Sampling Time Unit
_unknown
Sampling Time Span
_unknown
Spatial Design
unknown spatial design
Spatial Scale
_unknown
Principal and granted permission
Research » Free for access and use upon request