| OCR Text |
Show Land Treatment and Management Studies Studies to refine the information on the current watershed conditions, soil types, erosion susceptibility, sediment yield rates, and contribution to salinity in streams are essential to effective planning and management. River basin studies of Type IV intensity are needed to identify and evaluate individual projects in such areas as the Santa Cruz-San Pedro River Basins, and the Salt, Verde, Gila, and Agua Fria drainage areas. Similar studies are needed along those major river flood plains having riparian vegetation to determine the impact of and potential for a vege- tative management program for increased water yield. Research is essential to provide direction for installation of a complete watershed and land resource management program which will assure maximized benefits. Research is needed not only for investigations into the specific factors affecting management of each individual resource, but also needs to be aimed at the various combinations of products and values to determine their interactions before and after management treat- ments. Examples of research needs are: 1. The effects of water yield from vegetative management within specific vegetative types. Evaluate the impact of this treat- ment on other multiple-use values, 2. The effects on surface supply and ground-water recharge of runoff control and floodwater retarding structures. 3. Improve snow data collection techniques and runoff prediction formulas• h. Develop more selective and acceptable pesticides and herbicides and better define the limitations of those presently used. Alternative management tools need additional investigation. 5. The effects of man's activities and land treatment and manage- ment on associated fish and wildlife, both game and nongame. 6. Improve timber management systems, develop superior genetic strains of timber, and find more efficient methods to use forest products. 7. Improve techniques for inventorying resources, measuring resource conditions, and organizing resource data for more meaningful interpretation and utilization in management decisions. 125 |
