Abstract
A research into growth status of Hemarthria compressa and its influence on soil nutrients was performed through the measured data of biomass,growth factors,soil pH value,soil organic matter,total N,P,K,hydrolysable N,available P and K without fertilizing the experimental fields in Sichuan Agricultural University from 2004 to 2005.The results indicated that the biomass reduced greatly (50.41% per year) with the pass of time and the growth of height and diameter decreased in a certain degree whereas the plant density increased by 13.74% per year and that the soil pH value lowered slightly and soil organic mat- ter,dissolved N,available P and K decreased in various degrees.Among them,hydrolysable N,available P and K decreased 26.73%,23.71% and 7.31% respectively each year,but the bottom layer of soil was not obviously affected by them.The abili- ty of soil fertility supplying declined,which affected productivity of Hemarthria compressa growth directly.
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Claims 10
Claim · model-written summary
Hemarthria biomass fell 50.41% per year.
- Taxon
- Hemarthria compressa
Hemarthria compressat0 - Outcome
- biomasse0
- Direction
- reducede0
- Value
- 50.41% per yeare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the biomass reduced greatly (50.41% per year)”
t0“Hemarthria compressa”
Claim · model-written summary
Hemarthria height and diameter growth decreased over time.
- Taxon
- Hemarthria compressaHemarthria compressat0
- Outcome
- growth of height and diametere0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth of height and diameter decreased in a certain degree”
t0“Hemarthria compressa”
Claim · model-written summary
Hemarthria plant density increased 13.74% annually.
- Taxon
- Hemarthria compressaHemarthria compressat0
- Outcome
- plant densitye0
- Direction
- increasede0
- Value
- 13.74% per yeare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant density increased by 13.74% per year”
t0“Hemarthria compressa”
Claim · model-written summary
Soil pH declined slightly.
- Taxon
- Hemarthria compressaHemarthria compressat0
- Outcome
- soil pH valuee0
- Direction
- lowerede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil pH value lowered slightly”
t0“Hemarthria compressa”
Claim · model-written summary
Soil organic matter declined.
- Taxon
- Hemarthria compressaHemarthria compressat0
- Outcome
- soil organic mat- tere0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil organic mat- ter,dissolved N,available P and K decreased in various degrees”
t0“Hemarthria compressa”
Claim · model-written summary
Hydrolysable nitrogen declined 26.73% annually.
- Taxon
- Hemarthria compressaHemarthria compressat0
- Outcome
- hydrolysable Ne0
- Direction
- decreasede0
- Value
- 26.73%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hydrolysable N,available P and K decreased 26.73%,23.71% and 7.31% respectively each year”
t0“Hemarthria compressa”
Claim · model-written summary
Available phosphorus declined 23.71% annually.
- Taxon
- Hemarthria compressaHemarthria compressat0
- Outcome
- available Pe0
- Direction
- decreasede0
- Value
- 23.71%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“available P and K decreased 26.73%,23.71% and 7.31% respectively each year”
t0“Hemarthria compressa”
Claim · model-written summary
Available potassium declined 7.31% annually.
- Taxon
- Hemarthria compressaHemarthria compressat0
- Outcome
- Ke0
- Direction
- decreasede0
- Value
- 7.31%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“available P and K decreased 26.73%,23.71% and 7.31% respectively each year”
t0“Hemarthria compressa”
Claim · model-written summary
The bottom soil layer was not obviously affected.
- Taxon
- Hemarthria compressaHemarthria compressat0
- Outcome
- bottom layer of soil was not obviously affectede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the bottom layer of soil was not obviously affected by them”
t0“Hemarthria compressa”
Claim · model-written summary
Declining soil fertility supply affected Hemarthria productivity.
- Taxon
- Hemarthria compressaHemarthria compressae0
- Outcome
- productivity of Hemarthria compressa growthe0
- Qualifier
- The abili- ty of soil fertility supplying declinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The abili- ty of soil fertility supplying declined,which affected productivity of Hemarthria compressa growth directly”