草本植物地上地下與兩類食植者的動(dòng)力學(xué)研究
[Abstract]:The dynamics of two herbivores preying on the same herbaceous plant has been widely studied. However, most studies have neglected the growth characteristics of herbaceous plants, that is, when there is no herbaceous aboveground part, the underground part will transfer energy to the aboveground part to help the aboveground part to achieve regrowth. Based on ecochemometrics, a dynamic model between plant aboveground and underground and two types of herbivore was established. The effects of the ratio of nitrogen to carbon on the population growth and reproduction of herbivores were studied theoretically and the relationship between the ratio of nitrogen and carbon in the aboveground part of herbaceous plants and the ratio of nitrogen to carbon in herbivores was studied. Two important factors affecting the dynamic behavior of the system, namely, the nitrogen element density and the environmental capacity, are explored by numerical analysis. In this paper, the internal mechanism of competitive advantage of two types of herbivores under the condition of nitrogen density limitation is revealed.
【學(xué)位授予單位】:東北師范大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:O175
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