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微孔草是由种子到种子的有性繁殖植物，在繁殖生长过程中常因生境差异、气候变化、繁殖和社群反应呈现出成群星散或成簇生长的空间格局，种群的个体呈随机分布，并因生境的改变或物种竞争而改变分布区或在分布区中随着时间的变化而使种群扩大或缩小。微孔草生长地的单位空间容纳量中包括了各种植物与环境间的相互作用，从而使微孔草受到种内和种间密度制约而使种群的数量发生变化。
Microporous grass is a sexual reproduction plant from seed to seed. In breeding process, habitat diversity, climate change, reproduction and community response often show spatial patterns of clusters or cluster growth. Individuals in the population are randomly distributed , And the population is expanded or contracted due to changes in habitat or species competition that change the distribution area or change over time in the distribution area. The unit space capacity of Microtus growth includes the interaction between plants and the environment, so that the population of Microtus brevis varies with population density and species density.