Abstract
The effects of grazing on spatial distribution relationships of constructive species (Stipa breviflora) and dominant species (Cleistogenes songorica and Allium polyrhizum) in the desert steppe were analyzed by different analysis methods. The results showed that the landscape characteristic of S. breviflora + C. songorica + A. polyrhizum community was mainly affected by soil properties and inherent properties of populations. The spatial distribution variability influenced by continuous grazing (CG) was in order of A. polyrhizum > C. songorica > S. breviflora. The influence of CG upon the density of S. breviflora and A. polyrhizum was notable, while little influence upon the density of C. songorica was observed. S. breviflora density increased with the increasing C. songorica density in CG area, whereas it increased firstly and then decreased with the increasing C. songorica density in enclosed area (CK). S. breviflora density decreased with the increasing A. polyrhizum density in CG and CK area. It was concluded that there was density effect for plant interspecific relationships which could disappear with the presence of outside interference. Plant interspecific relationships were multiple with the difference in populations or interference conditions.
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Claims 10
Claim · model-written summary
Soil and population properties mainly affected the landscape characteristics of the three species community.
- Taxon
- S. brevifloraStipa breviflorae0
- Outcome
- landscape characteristice0
- Qualifier
- inherent properties of populationse0
- Setting
- soil propertiese0
Not reportedDirection
Verbatim
e0“the landscape characteristic of S. breviflora + C. songorica + A. polyrhizum community was mainly affected by soil properties and inherent properties of populations.”
Claim · model-written summary
Under continuous grazing, spatial distribution variability ranked highest in A. polyrhizum, then C. songorica, then S. breviflora.
- Taxon
- A. polyrhizumAllium polyrhizume0
- Treatment
- continuous grazing (CG)e0
- Outcome
- spatial distribution variabilitye0
- Qualifier
- A. polyrhizum > C. songorica > S. breviflorae0
Verbatim
e0“The spatial distribution variability influenced by continuous grazing (CG) was in order of A. polyrhizum > C. songorica > S. breviflora.”
Claim · model-written summary
Continuous grazing notably influenced S. breviflora density.
- Taxon
- S. brevifloraStipa breviflorae0
- Treatment
- CGe0
- Outcome
- density of S. breviflorae0
Not reportedDirection
Verbatim
e0“The influence of CG upon the density of S. breviflora and A. polyrhizum was notable”
Claim · model-written summary
Continuous grazing notably influenced A. polyrhizum density.
- Taxon
- A. polyrhizumAllium polyrhizume0
- Treatment
- CGe0
- Outcome
- density of S. breviflora and A. polyrhizume0
Not reportedDirection
Verbatim
e0“The influence of CG upon the density of S. breviflora and A. polyrhizum was notable”
Claim · model-written summary
Continuous grazing had little influence on C. songorica density.
- Taxon
- C. songoricaCleistogenes songoricae0
- Treatment
- little influencee0
- Outcome
- density of C. songoricae0
Not reportedDirection
Verbatim
e0“little influence upon the density of C. songorica was observed”
Claim · model-written summary
In the continuously grazed area, S. breviflora density rose with C. songorica density.
- Taxon
- S. brevifloraStipa breviflorae0
- Interactor
- C. songoricaCleistogenes songoricae0other
- Outcome
- S. breviflora densitye0
- Direction
- increasede0
- Setting
- CG areae0
Verbatim
e0“S. breviflora density increased with the increasing C. songorica density in CG area”
Claim · model-written summary
In the enclosed area, S. breviflora density rose then fell as C. songorica density rose.
- Taxon
- Stipa brevifloraStipa breviflorat0
- Interactor
- C. songoricaCleistogenes songoricae0other
- Outcome
- increased firstly and then decreasede0
- Direction
- increased firstly and then decreasede0
- Setting
- enclosed area (CK)e0
Verbatim
e0“it increased firstly and then decreased with the increasing C. songorica density in enclosed area (CK)”
t0“Stipa breviflora”
Claim · model-written summary
S. breviflora density declined with rising A. polyrhizum density in both grazed and enclosed areas.
- Taxon
- S. brevifloraStipa breviflorae0
- Interactor
- A. polyrhizumAllium polyrhizume0other
- Outcome
- S. breviflora densitye0
- Direction
- decreasede0
- Setting
- CG and CK areae0
Verbatim
e0“S. breviflora density decreased with the increasing A. polyrhizum density in CG and CK area.”
Claim · model-written summary
The authors concluded that external interference can eliminate the density effect in interspecific plant relationships.
- Taxon
- Stipa brevifloraStipa breviflorat0
- Outcome
- density effect for plant interspecific relationshipse0
- Qualifier
- outside interferencee0
Verbatim
e0“there was density effect for plant interspecific relationships which could disappear with the presence of outside interference”
t0“Stipa breviflora”
Claim · model-written summary
The authors concluded that interspecific plant relationships varied by population and interference conditions.
- Taxon
- Stipa brevifloraStipa breviflorat0
- Outcome
- Plant interspecific relationships were multiplee0
- Qualifier
- difference in populations or interference conditionse0
Verbatim
e0“Plant interspecific relationships were multiple with the difference in populations or interference conditions.”
t0“Stipa breviflora”