CAJ | 학술논문

为探讨天然羊草(Leymus chinensis (Trin.) Tzvel.)草地合理利用途径,对坝上羊草草地2005年和2006年地上生物量动态进行了观测记录.结果表明:草地群落和羊草种群生长前期地上生物量呈由慢到快增长的季节性变化,且均在8月10日左右达到最大值;羊草绝对生长速率和相对生长速率的增长期都集中在生长季初期;群落和羊草地上生物量增长动态均符合Logistic生长曲线,2005年群落地上生物量保护指标为85.20 g/m~2,羊草地上生物量保护指标为75.62 g/m~2;2006年群落地上生物量保护指标为126.94 g/m~2,羊草地上生物量保护指标为103.56 g/m~2.
위탐토천연양초(Leymus chinensis (Trin.) Tzvel.)초지합리이용도경,대패상양초초지2005년화2006년지상생물량동태진행료관측기록.결과표명:초지군락화양초충군생장전기지상생물량정유만도쾌증장적계절성변화,차균재8월10일좌우체도최대치;양초절대생장속솔화상대생장속솔적증장기도집중재생장계초기;군락화양초지상생물량증장동태균부합Logistic생장곡선,2005년군락지상생물량보호지표위85.20 g/m~2,양초지상생물량보호지표위75.62 g/m~2;2006년군락지상생물량보호지표위126.94 g/m~2,양초지상생물량보호지표위103.56 g/m~2.
The grassland ecosystem has been damaged seriously and the deterioration area is keeping expanding due to the unreasonable utilization. In order to explore the optimal utilization of Leymus chinensis (Trin.) Tzvel. grassland, an experiment was carried out in 2005 and 2006 to investigate the seasonal dynamics of aboveground biomass and growth rate of L. chinensis grassland. The results show that there was a seasonal dynamic increase from slow to fast in aboveground biomass of the grassland community and L. chinensis population with peak values achieved around 10 August. L. chinensis population had a higher absolute growth rate and relative growth rate at the initial growth stage. Dynamics of aboveground biomass of grassland community and L. chinensis population accorded with the logistic equation model. In 2005, the biomass protective index of grassland community and L. chinensis population was 85.20 and 75.62 g·m~(-2), respectively. In 2006, the biomass protective index of grassland community and L. chinensis population was 126.94 and 103.56 g·m~(-2), respectively.