Relationship Between Flowers And Plants' Module Of Stellera Chamaejasme Population Along An Altitude Gradient Of Degraded Alpine Grassland

Modules biomass population that is one of forms of phenotypic plasticity, is thestructural basis of plant in the ecological function. This phenotypic plasticity of plantis performed by modules dynamics, modules placement pattern and modules form, itis a consequence of plant adaptation to the external environment in the long-term. Asthe main reproductive module, flower not only determines the success rate of sexualreproductive of plant, but also determines the performance of plant adaptation in theexternal environment. Though studying different configurations and dynamiccharacteristics in different modules of the plant, the consequences in study can reflectplant populations adaptation in different habitats. It can also reveals adaptationstrategies in different developmental stages of different plants.Given this, the article from the perspective of the community, use experimentalecolgical methods to examine the flower size, flower number, brunch number, leafsize and number of S. chamaejasme population in response to elevation variation. And,we discuss the relationship and the causes of different modules of S. chamaejasmepopulation in response to altitudes variation in the northwest of China. Our resultsshowed that:(1) The height, density and aboveground biomass of community increased andthen decreased.(2) flower size of S. Chamaejasme gradually increased along with increasingelevation, while the change of flower numbers of S. Chamaejasme shifted opposited;along with the different elevational gradients, the flower size was negativelycorrelated with flower number, however the relationship was different at4elevations,the flower size was significantly ngeatively correalted with mean flower number atelevation of2700m,2900m, and3000m(p<0.01), while the relationship at elevationof2800m was just negatively(p<0.05), the result indicated that there was arelationship of trade-off between flower size and flower number.2800m was theregion that the trade-off transformed from more smaller flower in low elevation tofewer bigger flower in high elevation.(3) flower size of S. Chamaejasme increased and then decreased along withincreasing brunch numbers at altitude of2700m, but gradually decreased at other three altitude plots along with increasing brunch numbers. At the altitude of2700m,flower size of S. Chamaejasme was positively correlated with brunch number ofclass?(p<0.05), while significantly negatively correlated with brunch number ofclass ?(p<0.01), however the flower size was significantly negatively correlated withbrunch number of class ? at altitude of2800m,2900m,3000m(p<0.01). There was avariation of biomass between flower size and brunch number of S. chamaejasme toensure that the populations effectively and completes sexual reproduction.(4) flower size and leaf number of S. Chamaejasme gradually increased alongwith increasing elevation, while the change of leaf size of S. Chamaejasme shiftedopposited. at the altitude of different altitudes, flower size of S. Chamaejasme wassignificantly positively correlated with leaf number (p<0.01), while negativelycorrelated with leaf size (p>0.05). The results demonstrated that the flower size of S.chamaejasme was limited with leaf number significantly.Consequently, different growth environment has changed the intensity ofresource utilization in species, though changed the reproductive strategy of flowersize and flower number trade-off, flower size and brunch numbers, leaf modulesplasticity of S. chamaejasme ensures that the populations effectively and completessexual reproduction.