Abstract
We measured the dynamics of both biomass and nutrient pools on 7-, 17-, 31- and 51-year-old Pinus massoniana plantations in southern China. Using a chronosequence approach, we found that biomass of each component increased with aging while its proportion decreased except stem-wood. Nutrient pools varied with biomass pools except for foliage. For all harvest intensities (stem only, stem and branches, and aboveground), increasing the rotation length from 31 yrs to 51 yrs increased the biomass collection by ≥7.1% and reduced the nutrient export for K, Ca and Mg by ≤6.3% during 155 years, while N and P pools varied with harvesting intensities. A decreasing rotation length from 51 yrs to 17 yrs would increase the biomass collection by ≥12.4%, but remove significantly more nutrients. Although more biomass would be collected if harvesting intensity increased, the nutrient removal would have disproportionally increased. Therefore, increasing the rotation length and decreasing harvest intensity are recommended to sustain the site productivity for future Masson pine plantation.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Biomass of each component of Pinus massoniana increased with stand age.
- Taxon
- Pinus massoniana
Pinus massonianat0 - Treatment
- aginge2
- Outcome
- biomass of each componente2
- Direction
- increasede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pinus massoniana”
e2“biomass of each component increased with aging while its proportion decreased except stem-wood”
Claim · model-written summary
The proportion of each biomass component of Pinus massoniana decreased with stand age, except stem-wood.
- Taxon
- Pinus massonianaPinus massonianat0
- Treatment
- aginge2
- Outcome
- its proportione2
- Direction
- decreasede2
- Qualifier
- except stem-woode2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pinus massoniana”
e2“biomass of each component increased with aging while its proportion decreased except stem-wood”
Claim · model-written summary
Nutrient pools of Pinus massoniana varied with biomass pools, except for foliage.
- Taxon
- Pinus massonianaPinus massonianat0
- Treatment
- biomass poolse3
- Outcome
- Nutrient poolse3
- Qualifier
- except for foliagee3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pinus massoniana”
e3“Nutrient pools varied with biomass pools except for foliage”
Claim · model-written summary
Lengthening the rotation from 31 to 51 years increased simulated biomass collection by at least 7.1%.
- Taxon
- Pinus massonianaPinus massonianat0
- Treatment
- increasing the rotation length from 31 yrs to 51 yrse4
- Outcome
- biomass collectione4
- Direction
- increasede4
- Value
- ≥7.1%e4
- Qualifier
- 155 yearse4
- Comparator
- 31 yrse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pinus massoniana”
e4“increasing the rotation length from 31 yrs to 51 yrs increased the biomass collection by ≥7.1% and reduced the nutrient export for K, Ca and Mg by ≤6.3% during 155 years”
Claim · model-written summary
Lengthening the rotation from 31 to 51 years reduced simulated nutrient export for K, Ca and Mg by at most 6.3%.
- Taxon
- Pinus massonianaPinus massonianat0
- Treatment
- increasing the rotation length from 31 yrs to 51 yrse4
- Outcome
- nutrient export for K, Ca and Mge4
- Direction
- reducede4
- Value
- ≤6.3%e4
- Comparator
- 31 yrse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pinus massoniana”
e4“increasing the rotation length from 31 yrs to 51 yrs increased the biomass collection by ≥7.1% and reduced the nutrient export for K, Ca and Mg by ≤6.3% during 155 years”
Claim · model-written summary
N and P pools of Pinus massoniana varied with harvesting intensity in the simulation.
- Taxon
- Pinus massonianaPinus massonianat0
- Treatment
- harvesting intensitiese5
- Outcome
- N and P poolse5
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pinus massoniana”
e5“N and P pools varied with harvesting intensities”
Claim · model-written summary
Shortening the rotation from 51 to 17 years would increase simulated biomass collection by at least 12.4%.
- Taxon
- Pinus massonianaPinus massonianat0
- Treatment
- decreasing rotation length from 51 yrs to 17 yrse6
- Outcome
- biomass collectione6
- Direction
- increasee6
- Value
- ≥12.4%e6
- Comparator
- 51 yrse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pinus massoniana”
e6“A decreasing rotation length from 51 yrs to 17 yrs would increase the biomass collection by ≥12.4%, but remove significantly more nutrients”
Claim · model-written summary
Shortening the rotation from 51 to 17 years would significantly increase nutrient removal.
- Taxon
- Pinus massonianaPinus massonianat0
- Treatment
- decreasing rotation length from 51 yrs to 17 yrse6
- Outcome
- nutrientse6
- Direction
- increaseinferrede6
- Comparator
- 51 yrse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pinus massoniana”
e6“A decreasing rotation length from 51 yrs to 17 yrs would increase the biomass collection by ≥12.4%, but remove significantly more nutrients”
Claim · model-written summary
Raising harvest intensity would increase biomass collected from Pinus massoniana plantations.
- Taxon
- Pinus massonianaPinus massonianat0
- Treatment
- harvesting intensity increasede7
- Outcome
- biomasse7
- Direction
- increaseinferrede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pinus massoniana”
e7“Although more biomass would be collected if harvesting intensity increased, the nutrient removal would have disproportionally increased”
Claim · model-written summary
Raising harvest intensity would disproportionately increase nutrient removal from Pinus massoniana plantations.
- Taxon
- Pinus massonianaPinus massonianat0
- Treatment
- harvesting intensity increasede7
- Outcome
- nutrient removale7
- Direction
- increasede7
- Qualifier
- disproportionallye7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pinus massoniana”
e7“Although more biomass would be collected if harvesting intensity increased, the nutrient removal would have disproportionally increased”
Claim · model-written summary
Increasing the rotation length and decreasing harvest intensity are recommended to sustain the site productivity of Masson pine plantations.
- Taxon
- Pinus massonianaPinus massonianat0
- Treatment
- increasing the rotation length and decreasing harvest intensitye0
- Outcome
- sustain the site productivitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pinus massoniana”
e0“increasing the rotation length and decreasing harvest intensity are recommended to sustain the site productivity for future Masson pine plantation”