"Research and contestation of population and ecosystem factors of circumstance have already kept on for more than 200 years, in recent years this problem further cause value.But, because of this realm research of various complexity, therefore, in the factors of circumstance research of the population ecosystem, not only existence various thought flow an of parties of huge rift, also existence research contents top and method up of dissimilarity.This text discussion nowadays world and China population and ecosystem environment face of challenge, and population and ecosystem environment can keep on development of relation."
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