A Synoptic Review of U.s. Rangelands: a Technical Document Supporting the Forest Service 2010 Rpa Assessment - Richard Reeves - Libros - Createspace - 9781507650196 - 14 de febrero de 2015
En caso de que portada y título no coincidan, el título será el correcto

A Synoptic Review of U.s. Rangelands: a Technical Document Supporting the Forest Service 2010 Rpa Assessment

Richard Reeves

Precio
SEK 259

Pedido desde almacén remoto

Entrega prevista 12 - 24 de jun.
Añadir a tu lista de deseos de iMusic

A Synoptic Review of U.s. Rangelands: a Technical Document Supporting the Forest Service 2010 Rpa Assessment

Publisher Marketing: The Renewable Resources Planning Act of 1974 requires the USDA Forest Service to conduct assessments of resource conditions. This report fulfills that need and focuses on quantifying extent, productivity, and health of U. S. rangelands. Since 1982, the area of U. S. rangelands has decreased at an average rate of 350,000 acres per year owed mostly to conversion to agricultural and residential land uses. Nationally, rangeland productivity has been steady over the last decade, but the Rocky Mountain Assessment Region appears to have moderately increased productivity since 2000. The forage situation is positive and, from a national perspective, U. S. rangelands can probably support a good deal more animal production than current levels. Sheep numbers continue to decline, horses and goats have increased numbers, and cattle have slightly increased, averaging 97 million animals per year since 2002. Data from numerous sources indicate rangelands are relatively healthy but also highlight the need for consolidation of efforts among land management agencies to improve characterization of rangeland health. The biggest contributors to decreased rangeland health, chiefly invasive species, are factors associated with biotic integrity.

Medios de comunicación Libros     Paperback Book   (Libro con tapa blanda y lomo encolado)
Publicado 14 de febrero de 2015
ISBN13 9781507650196
Editores Createspace
Páginas 140
Dimensiones 216 × 279 × 8 mm   ·   340 g

Mostrar todo

Mas por Richard Reeves

Otros también han comprado