Abstract
With the method of prescribed burning, the effects of burning on Leymus chinensis population in Inner Mongolia steppe were discussed. The results showed: fire could produce unfavorable effects on the shoot development of L. chinensis, restrain the height, and decrease the dry weight per shoot. But fire could greatly promote the density and increase aboveground biomass of L. chinensis community, which showed that fire could play a positive role in promoting the development of L. chinensis population. According to the results, appropriate burning every several years (about 4～5 years) would have positive effects on the development of L. chinensis population, the effects may maintain 4～5 years. But repeated burning in successive years had unfavorable effects on L. chinensis. Moreover, the effects of fire on L. chinensis population were influenced strongly by the condition of environment; fire had unfavorable effects on L. chinensis in Stipa grandis community where the water condition and physicochemical properties of soil were relatively bad.
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Claims 5
Claim · model-written summary
Fire restrained shoot height and reduced dry weight per shoot
- Taxon
- L. chinensisLeymus chinensise0
- Treatment
- firee0
- Outcome
- height, and decrease the dry weight per shoote0
- Direction
- decreasee0
Verbatim
e0“fire could produce unfavorable effects on the shoot development of L. chinensis, restrain the height, and decrease the dry weight per shoot”
Claim · model-written summary
Fire increased density and aboveground biomass
- Taxon
- L. chinensisLeymus chinensise0
- Treatment
- firee0
- Outcome
- density and increase aboveground biomasse0
- Direction
- increasee0
Verbatim
e0“fire could greatly promote the density and increase aboveground biomass of L. chinensis community”
Claim · model-written summary
Successive-year burning harmed L. chinensis
- Taxon
- L. chinensisLeymus chinensise0
- Treatment
- repeated burning in successive yearse0
- Outcome
- unfavorable effectse0
- Direction
- unfavorablee0
Verbatim
e0“repeated burning in successive years had unfavorable effects on L. chinensis”
Claim · model-written summary
Fire harmed L. chinensis in Stipa grandis community
Verbatim
e0“fire had unfavorable effects on L. chinensis in Stipa grandis community”
Claim · model-written summary
Burning every four to five years was recommended for L. chinensis population development
- Taxon
- L. chinensisLeymus chinensise0
- Outcome
- appropriate burning every several years (about 4～5 years)e0
Verbatim
e0“appropriate burning every several years (about 4～5 years) would have positive effects on the development of L. chinensis population”