Abstract
Abstract Plants’ compensatory growth is the common response following grazing/mowing, particularly determined by the damage severity, availability of resources and plant functional types. Clonal plants exhibit unique clonal functional traits, yet the compensatory growth strategies underlying their responses to clipping intensity under various nitrogen (N) availability levels remain poorly understood. In this study, a pot experiment was conducted to test how the clonal plant species Leymus chinensis responds to clipping and N enrichment under heterogeneous soil conditions. Moderate clipping significantly enhanced the total biomass of younger ramets by 22% and 12%, under high and low N conditions, respectively, but had no impact on the total biomass of older ramets. The results suggested that L. chinensis exhibited over-compensatory growth characterized by prioritized biomass allocation to younger ramets rather than to older ramets, which facilitated its spatial expansion. However, severe clipping reduced the total biomass of younger ramets by 23%. Furthermore, the older ramets reduced biomass allocation to belowground parts and decreased the rhizome length (−28%), which negatively affected the growth of younger ramets. The younger ramets exhibited adaptation to clipping through the enhancement of antioxidant enzyme activities and the elevation of osmotic regulatory substance concentrations. N enrichment did not influence the total biomass of younger ramets or the entire clone. However, under moderate clipping, the biomass of older ramets increased relative to conditions without N enrichment. Our findings indicate that N availability affected the compensatory growth of the L. chinensis clone induced by clipping, thereby promoting the spatial expansion of this species. These results hold significant potential utilization of clonal plants for the restoration of patchy degraded grasslands.
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Claims 15
Claim · model-written summary
Moderate clipping increased younger ramet biomass by 22% under high nitrogen.
- Taxon
- Leymus chinensisLeymus chinensist0
- Treatment
- Moderate clippinge0
- Outcome
- total biomass of younger rametse0
- Direction
- enhancede0
- Value
- 22%e0
- Qualifier
- highe0
Not reportedComparator
Verbatim
e0“Moderate clipping significantly enhanced the total biomass of younger ramets by 22% and 12%, under high and low N conditions, respectively”
t0“Leymus chinensis”
Claim · model-written summary
Moderate clipping increased younger ramet biomass by 12% under low nitrogen.
- Taxon
- Leymus chinensisLeymus chinensist0
- Treatment
- Moderate clippinge0
- Outcome
- total biomass of younger rametse0
- Direction
- enhancede0
- Value
- 12%e0
- Qualifier
- low N conditionse0
Not reportedComparator
Verbatim
e0“Moderate clipping significantly enhanced the total biomass of younger ramets by 22% and 12%, under high and low N conditions, respectively”
t0“Leymus chinensis”
Claim · model-written summary
Moderate clipping did not affect older ramet biomass.
- Taxon
- Leymus chinensisLeymus chinensist0
- Treatment
- Moderate clippinge1
- Outcome
- total biomass of older rametse0
- Direction
- no impacte0
Not reportedComparator
Verbatim
e0“but had no impact on the total biomass of older ramets”
e1“Moderate clipping significantly enhanced”
t0“Leymus chinensis”
Claim · model-written summary
L. chinensis showed over-compensatory growth with biomass prioritized to younger ramets.
- Taxon
- L. chinensisLeymus chinensise0
- Organ / stage
- younger rametse0
- Outcome
- over-compensatory growthe0
Verbatim
e0“L. chinensis exhibited over-compensatory growth characterized by prioritized biomass allocation to younger ramets rather than to older ramets, which facilitated its spatial expansion”
Claim · model-written summary
Prioritized biomass allocation to younger ramets facilitated spatial expansion.
- Taxon
- Leymus chinensisLeymus chinensist0
- Outcome
- spatial expansione0
- Qualifier
- prioritized biomass allocation to younger ramets rather than to older rametse0
Verbatim
e0“prioritized biomass allocation to younger ramets rather than to older ramets, which facilitated its spatial expansion”
t0“Leymus chinensis”
Claim · model-written summary
Severe clipping reduced younger ramet biomass by 23%.
- Taxon
- Leymus chinensisLeymus chinensist0
- Treatment
- severe clippinge0
- Outcome
- total biomass of younger rametse0
- Direction
- reducede0
- Value
- 23%e0
Not reportedComparator
Verbatim
e0“severe clipping reduced the total biomass of younger ramets by 23%”
t0“Leymus chinensis”
Claim · model-written summary
Older ramets reduced biomass allocation belowground.
- Taxon
- Leymus chinensisLeymus chinensist0
- Organ / stage
- older rametse0
- Outcome
- biomass allocation to belowground partse0
- Direction
- reducede0
Verbatim
e0“the older ramets reduced biomass allocation to belowground parts”
t0“Leymus chinensis”
Claim · model-written summary
Older ramet rhizome length decreased by 28%.
Verbatim
e0“the older ramets reduced biomass allocation to belowground parts and decreased the rhizome length (−28%)”
t0“Leymus chinensis”
Claim · model-written summary
Reduced belowground allocation and rhizome length of older ramets negatively affected younger ramet growth.
- Taxon
- Leymus chinensisLeymus chinensist0
- Outcome
- growth of younger rametse0
- Direction
- negatively affectede0
- Qualifier
- reduced biomass allocation to belowground parts and decreased the rhizome lengthe0
Verbatim
e0“the older ramets reduced biomass allocation to belowground parts and decreased the rhizome length (−28%), which negatively affected the growth of younger ramets”
t0“Leymus chinensis”
Claim · model-written summary
Younger ramets enhanced antioxidant enzyme activities in adaptation to clipping.
- Taxon
- Leymus chinensisLeymus chinensist0
- Treatment
- clippinge0
- Outcome
- antioxidant enzyme activitiese0
- Direction
- enhancemente0
Not reportedComparator
Verbatim
e0“The younger ramets exhibited adaptation to clipping through the enhancement of antioxidant enzyme activities and the elevation of osmotic regulatory substance concentrations”
t0“Leymus chinensis”
Claim · model-written summary
Younger ramets elevated osmotic regulatory substance concentrations in adaptation to clipping.
- Taxon
- Leymus chinensisLeymus chinensist0
- Treatment
- clippinge0
- Outcome
- osmotic regulatory substance concentrationse0
- Direction
- elevatione0
Not reportedComparator
Verbatim
e0“The younger ramets exhibited adaptation to clipping through the enhancement of antioxidant enzyme activities and the elevation of osmotic regulatory substance concentrations”
t0“Leymus chinensis”
Claim · model-written summary
Nitrogen enrichment did not influence younger ramet biomass.
- Taxon
- Leymus chinensisLeymus chinensist0
- Treatment
- N enrichmente0
- Outcome
- total biomass of younger rametse0
- Direction
- did not influencee0
Not reportedComparator
Verbatim
e0“N enrichment did not influence the total biomass of younger ramets or the entire clone”
t0“Leymus chinensis”
Claim · model-written summary
Nitrogen enrichment did not influence entire clone biomass.
- Taxon
- Leymus chinensisLeymus chinensist0
- Treatment
- N enrichmente0
- Outcome
- total biomass of younger ramets or the entire clonee0
- Direction
- did not influencee0
Not reportedComparator
Verbatim
e0“N enrichment did not influence the total biomass of younger ramets or the entire clone”
t0“Leymus chinensis”
Claim · model-written summary
Under moderate clipping, nitrogen enrichment increased older ramet biomass.
Verbatim
e0“under moderate clipping, the biomass of older ramets increased relative to conditions without N enrichment”
t0“Leymus chinensis”
Claim · model-written summary
Nitrogen availability affected clipping-induced compensatory growth and promoted spatial expansion.
- Taxon
- L. chinensisLeymus chinensise0
- Outcome
- spatial expansion of this speciese0
- Qualifier
- N availability affected the compensatory growthe0
Verbatim
e0“N availability affected the compensatory growth of the L. chinensis clone induced by clipping, thereby promoting the spatial expansion of this species”
The same questions in other papers
mechanical · growth · Leymus chinensisPositive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- no effect
- negative
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2 papers more in this group
See all 6 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.