生态位是指一个种群在生态系统中,在时间、空间上所占据的位置及其与相关种群之间的功能关系与作用。对于此概念理解的考查将成为高考中新的考点。例1下图为某一区域内共同生活的M、N两物种的资源利用曲线(纵、横坐标分别表示被M、N两个物种所摄取的食物数量和种类),下列叙述 Niche refers to the position of a population in the ecosystem, in time and space, and its functional relationship with related populations. The examination of this concept understanding will become a new test center for the college entrance examination. Example 1 The following figure shows the resource utilization curves of M and N species living together in a certain area (the vertical and horizontal axes represent the quantity and types of foods consumed by M and N species, respectively).