Abstract
The investigation of foliage biomass development including LAI and the growth of spruce and beech stands in the juvenile stage (age 1 to 21 years) represents a special complementary study to long-term research of water balance components on the experimental forest hydrology area DeťtnÊ Mountainside. The experiment is located in the OrlickÊ hory Mts. at the altitude of 900 m on a clear-felled area. In 1982 the spruce plantation was established at 1.5 ´ 1.5 m spacing (4,600 plants/ha) and the beech plantation at 1.0 ´ 1.0 m (10,000 plants/ha). According to tending programs applicable to forest stands in the Czech Republic, two improvement fellings were carried out (1995 and 2001) in spruce and none in beech. In 2002, some 1,550 spruce trees/ha (mean height 10.1 m) and 7,440 beech trees/ha (mean height 4.8 m) were recorded. At the end of the first vegetation season in 1982, the dry matter (DM) of foliage in spruce and beech amounted to 35 and 70 kg/ha, respectively. Five years later (1987), these values increased to 770 and 360 kg/ha in spruce and beech, respectively. At a stand age of 21 years, foliage DM was determined to be 11,940 kg/ha for spruce and 3,050 kg/ha for beech. At the same time, the leaf-area index (LAI) was calculated to be 5.55 and 5.94 in spruce and beech, respectively. The method of foliage biomass quantification, based on the determination of foliage DM of mean sample trees and stand density, enabled to acquire complementary data usable in long-term research of the water regime of spruce and beech and simultaneously to provide information on the potential of biomass production and LAI value of both main commercial species in mountain forests of the Czech Republic.
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Claims 10
Claim · model-written summary
In 2002, spruce stands had about 1,550 trees per hectare and mean height 10.1 m.
PiceaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 2002, some 1,550 spruce trees/ha (mean height 10.1 m) and 7,440 beech trees/ha (mean height 4.8 m) were recorded.”
Claim · model-written summary
In 2002, beech stands had 7,440 trees per hectare and mean height 4.8 m.
Verbatim
e0“In 2002, some 1,550 spruce trees/ha (mean height 10.1 m) and 7,440 beech trees/ha (mean height 4.8 m) were recorded.”
Claim · model-written summary
First-season spruce foliage dry matter was 35 kg/ha.
- Organ / stage
- foliagee0
- Outcome
- dry matter (DM) of foliagee0
- Value
- 35 and 70 kg/hae0
- Qualifier
- first vegetation season in 1982e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the end of the first vegetation season in 1982, the dry matter (DM) of foliage in spruce and beech amounted to 35 and 70 kg/ha, respectively.”
Claim · model-written summary
First-season beech foliage dry matter was 70 kg/ha.
Verbatim
e0“At the end of the first vegetation season in 1982, the dry matter (DM) of foliage in spruce and beech amounted to 35 and 70 kg/ha, respectively.”
Claim · model-written summary
By 1987, spruce foliage dry matter had increased to 770 kg/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Five years later (1987), these values increased to 770 and 360 kg/ha in spruce and beech, respectively.”
Claim · model-written summary
By 1987, beech foliage dry matter had increased to 360 kg/ha.
Verbatim
e0“Five years later (1987), these values increased to 770 and 360 kg/ha in spruce and beech, respectively.”
Claim · model-written summary
At stand age 21, spruce foliage dry matter was 11,940 kg/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At a stand age of 21 years, foliage DM was determined to be 11,940 kg/ha for spruce and 3,050 kg/ha for beech.”
Claim · model-written summary
At stand age 21, beech foliage dry matter was 3,050 kg/ha.
Verbatim
e0“At a stand age of 21 years, foliage DM was determined to be 11,940 kg/ha for spruce and 3,050 kg/ha for beech.”
Claim · model-written summary
Spruce leaf-area index was 5.55.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the same time, the leaf-area index (LAI) was calculated to be 5.55 and 5.94 in spruce and beech, respectively.”
Claim · model-written summary
Beech leaf-area index was 5.94.
Verbatim
e0“At the same time, the leaf-area index (LAI) was calculated to be 5.55 and 5.94 in spruce and beech, respectively.”