منابع مشابه
An Inventory of the Vascular Plants of Amistad National Recreation Area, Val Verde Co., Texas
Amistad National Recreation Area is a 23,186 ha property in Val Verde County, Texas. A floral inventory was conducted in 2003–2004, producing a checklist of 699 taxa with 99 infraspecific taxa, 686 species, 402 genera, and 106 families. There are 651 native taxa and 48 introduced. No federally or state listed plants were documented. Seventeen species of conservation concern were verified within...
متن کاملSoil carbon dynamics and potential carbon sequestration by rangelands.
The USA has about 336 Mha of grazing lands of which rangelands account for 48%. Changes in rangeland soil C can occur in response to a wide range of management and environmental factors. Grazing, fire, and fertilization have been shown to affect soil C storage in rangelands, as has converting marginal croplands into grasslands. Carbon losses due to soil erosion can influence soil C storage on r...
متن کاملPreliminary Geology and Mineral Potential of the Cascade Recreation Area
The C;~scade Rrcreation Area wi,\ created in 1YX7 to preserve wilderness and heritage recreation opportunities in I67 quxc kilomctres of the northern Cascade Mountain\. The area encompxses the headuatcrs of the Tulamecn. Snnss and Skaist rivers in the Ho~amccn Range\. 10 kilometres southeast of Hope and is hordcred by Manning Provincial Park on the southeast and Skagit Valley Recreation Arca on...
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ژورنال
عنوان ژورنال: Journal of Range Management
سال: 1973
ISSN: 0022-409X
DOI: 10.2307/3896458