How to manage optimally and make use of the resource will play an important role in sustained-yield forest management in Heilongjiang province and determining the age of harvest cutting is the key.

A study of Central American leaf-cutter ants has shown that the younger and more vigorous members of the colony are given the toughest job of cutting through the leaves they harvest.

Proponents insist that the reduction of farm equipment needed for harvest and transport would make up the difference by cutting back on fossil fuels.