Data presented in this paper were obtained during a five year study by the U.S. Forest Service (Ringger, 1972). This study, done in a hardwood stand in Forest County, Wisconsin sought to determine the effect of opening ...

Although the initially favored corridor for the Stadium interstate freeway was adjacent to Cedarburg Bog, the highway department is now favoring a route at least a mile from the Bog. Many different individuals had written ...

Many trees are not well-adapted to the rigors of urban life. Some are highly susceptible to the effects of S02. Others, such as the oaks, grow too slowly while cottonwood and horse chestnut for example, good city trees, ...

Botany is today's most needed urban science. It deals with life and with objects which man can understand, for which he reaches and with which he feels comfortable. The technological and economic problems of the city are ...

We have moderately good knowledge of the yields of crops and of commercial forest land. In contrast, little is known of the productivity of urban park areas. Parks are neither grassland nor forest-in structure they most ...

Net annual production of plant communities is traditionally determined by measuring or estimating dry matter accumulation at the end of the growing season. Published records list crop or forest yields, i.e. the bales of ...