搜索结果: 1-13 共查到“知识库 Great Plains”相关记录13条 . 查询时间(0.046 秒)
Weed-Competitive Ability of Spring and Winter Cereals in the Northern Great Plains
Crop rotation cultural weed control integrated weed management wheat barley
2015/12/23
The inclusion of winter cereals in spring-annual rotations in the northern Great Plains may reduce weed populations and
herbicide requirements. A broad range of spring and winter cereals were compare...
DISCRIMINATING CROPPING PATTERNS FOR THE U.S. CENTRAL GREAT PLAINS REGION USING TIME-SERIES MODIS 250-METER NDVI DATA - PRELIMINARY RESULTS
Management decisions environmental factors land use and land cover the data set
2015/5/13
Agricultural practices are continually changing at various spatial and temporal scales in response to local
management decisions and environmental factors. However, few regional scale land use/land c...
A NEW SPECIES OF MOROPUS (MAMMALIA, PERISSODACTYLA, CHALICOTHERIODEA) IN THE BATESLAND FORMATION, GREAT PLAINS AREA OF NORTH AMERICA
Great Plains Batesland Formation Miocene
2015/1/4
The chalicothere Moropus was a rare perissodactyl present in the Great Plains region of North America through much of the Miocene. A temporal gap in named species of Moropus is present in the early He...
IMPACT OF BIOFUEL DEMAND ON WATER ALLOCATION IN THE GREAT PLAINS
IMPACT OF BIOFUEL DEMAND WATER ALLOCATION GREAT PLAINS
2014/6/3
IMPACT OF BIOFUEL DEMAND ON WATER ALLOCATION IN THE GREAT PLAINS。
Effect of weather patterns on preweaning growth of beef calves in the Northern Great Plains
Beef Calves Climate Change Growth Precipitation emperature
2013/3/4
Records from a 76-year investigation into effects of line breeding and selection of Hereford cattle, and concurrent weather records, were used to assess effects of weather patterns on growth of suckli...
Ponderosa Pine Family Growth Comparisons in the Central Great Plains of Kansas
Ponderosa Pine Pinus Ponderosa Provenance, Seed Sources Tree Selection Growth Characteristics.
2013/3/4
Ponderosa pine (Pinus ponderosa Laws.) has been planted widely in the Great Plains. Recommendations based on a 1968 study were to use material from south central South Dakota and north central Nebrask...
Magnitudes and controls of organic and inorganic carbon flux through a chain of hard-water lakes on the northern Great Plains
Magnitudes and controls of organic inorganic carbon flux through hard-water lakes northern Great Plains
2014/4/17
Whole-lake carbon (C) mass-balance budgets were constructed for a chain of six hard-water lakes to quantify the relative importance of organic carbon (OC) and inorganic carbon (IC) exchanges between a...
Experimental evidence that pollution with urea can degrade water quality in phosphorus-rich lakes of the Northern Great Plains
pollution urea degrade water quality phosphorus-rich lakes the Northern Great Plains
2014/4/17
Urea is the most abundant nitrogen (N) fertilizer used on agricultural soils, yet its effects on adjacent aquatic ecosystems are largely unknown. Here 21-d, 3000-liter mesocosm experiments were conduc...
Regulation of spatial and temporal variability of carbon flux in six hard-water lakes of the northern Great Plains
Regulation of spatial temporal variability carbon flux six hard-water lakes northern Great Plains
2014/4/17
Six hard-water lakes were sampled May-August for 14 yr in a 52,000 km2 catchment to identify the mechanisms that regulate the spatial and temporal variability of net atmospheric exchange of CO2 of lak...
Development of a distributed biosphere hydrological model and its evaluation with the Southern Great Plains Experiments
distributed biosphere the Southern Great Plains Experiments
2013/7/25
A distributed biosphere hydrological model, the so-called water and energybudget-based distributed hydrological model (WEB-DHM), has been developed by fullycoupling a biosphere scheme (SiB2) with a ge...
Spatial variability of climate and land-use effects on lakes of the northern Great Plains
Spatial variability climate land-use on lakes of the northern Great Plains
2014/4/21
Evaluation of the effects of climate change and human activities on lakes requires improved understanding of how stressors interact and the degree to which individual sentinel lakes represent broad sp...
Spatial variation of nitrogen fixation in lakes of the northern Great Plains
Spatial variation nitrogen fixation the northern Great Plains
2014/5/4
Cyanobacterial blooms are a regular feature of lakes in central North America, but little is known of their importance to the nitrogen (N) cycle and nutrition of aquatic food webs. We hypothesized tha...
“Rain Follows the Plow” and Dryfarming Doctrine: The Climate Information Problem and Homestead Failure in the Upper Great Plains, 1890 -1925
Rain Follows the Plow Dryfarming Doctrine The Climate Information Problem Homestead Failure Upper Great Plains
2014/6/25
In the late 19th and early 20th centuries, the North American agricultural frontier moved into semi- arid regions of the Great Plains where farming was vulnerable to drought. Farmers who migrated to t...