CAJ | 학술논문

中华鼢鼠是亚高寒草甸的主要害鼠之一,其觅食掘洞的活动严重地破坏了草地原有的植被,同时也影响土丘植被恢复演替的过程.本研究调查分析了亚高寒草甸的鼢鼠土丘植被演替过程中群落种类组成,其结果表明,1)随着演替时间的推移,物种丰富度呈单调递增;2)Shanon-Wiener指数在群落演替初期先迅速增加,至顶极又略微降低;3)用相异性指数公式计算群落物种组成间的变化情况,结果显示,次生演替初期群落间物种组成的相异性程度较高;随着演替时间的推移,这种相异性逐渐减小.因而,鼠丘植被的演替过程是一个由分异至趋同的过程.
중화분서시아고한초전적주요해서지일,기멱식굴동적활동엄중지파배료초지원유적식피,동시야영향토구식피회복연체적과정.본연구조사분석료아고한초전적분서토구식피연체과정중군락충류조성,기결과표명,1)수착연체시간적추이,물충봉부도정단조체증;2)Shanon-Wiener지수재군락연체초기선신속증가,지정겁우략미강저;3)용상이성지수공식계산군락물충조성간적변화정황,결과현시,차생연체초기군락간물충조성적상이성정도교고;수착연체시간적추이,저충상이성축점감소.인이,서구식피적연체과정시일개유분이지추동적과정.
Plateau zokor is one of the major rodents in subalpine meadow, They frequently consume plant roots and entire plants, largely destructing the grassland. Meanwhile, they excavate burrow systems and deposit the soil aboveground, then creating new sites that can initiate succession at a local scale. We investigated the community structure on the zokor mound, the results indicate that: 1) There is a continuous increase in species richness with succession. 2) Shanon-Weiner index also show species diversity may peak at the late stage, even higher than the matrix meadow. 3) Using the community heterogeneity index to measure different mound communities, it suggested that the variation is greater in early secondary succession, and the variation will decrease over time. It is a good evidence to prove that the succession of mound is a process from divergence to convergence.