نتایج جستجو برای: polur rangeland
تعداد نتایج: 2802 فیلتر نتایج به سال:
SUMMARY Results from various straight-and crossbreeding trials South Africa were reviewed. The conclusion is drawn that in instances, initial crossbreeding followed by inter ~ matin, crossbred cattle give the same if not better results than crossbreeding. This facilitates rangeland improvement as it number of pastures needed during the breeding season.
The mountain rangeland chain of Matmata (southern Tunisia) is characterised by an arid Mediterranean climate with severe droughts and high temperatures, combined substantial human disturbance....
Jack A. Morgan is plant physiologist and Feike Dijkstra is post-doc research ecologist at the Rangeland Resources Research Unit, Ronald F. Follett is research leader and soil scientist and Stephen Del Grosso is a soil scientist and ecologist at the Soil Plant Nutrient Research Unit, USDA Agricultural Research Service Northern Plains Area, Fort Collins, Colorado. Leon Hartwell Allen Jr. is soil ...
Rapid human population growth and habitat modification in the western United States has led to the formation of urban and exurban rangelands. Many of these rangelands are also home to populations of black-tailed prairie dogs (Cynomys ludovicianus). Our study aimed to compare the vegetation composition of an urban and exurban rangeland, and explore the role that prairie dogs play in these system...
First posted May 31, 2022 For additional information, contact: Director, Earth Resources Observation and Science Center U.S. Geological Survey Sioux Falls, SD 57198Contact Pubs Warehouse The Rangeland Condition Monitoring Assessment Projection (RCMAP) project has partnered with the Bureau of Land Management to provide annual maps rangeland vegetation condition across Western United States from ...
Since livestock production in Uzbekistan in arid and semi-arid zones is based on rangeland vegetation, contemporary studies have focused on improvement of low productive grazing lands and rehabilitation of degraded rangelands. Less interest has been given to the driving factors of land degradation and their interaction with other ecosystem components, e.g. response of vegetation to grazing indu...
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