Results 51 to 60 of about 24,126 (256)

Rangeland Productivity Partitioned to Sub-Pixel Plant Functional Types

Remote Sensing, 2019
Understanding and monitoring the dynamics of rangeland heterogeneity through time and across space is critical for the effective management and conservation of rangeland systems and the sustained supply of the ecosystem goods and services they provide ...
Nathaniel P. Robinson, Matthew O. Jones, Alvaro Moreno, Tyler A. Erickson, David E. Naugle, Brady W. Allred   +5 more
doaj   +1 more source

Sustainable Productivity Growth in Agriculture: The Role of Shifts in R&D Investments and Technology

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT The objective of the paper is to evaluate the long‐term prospects of sustainable productivity growth linked to plausible assumptions on public agricultural R&D investments as the key productivity driver. Second, it investigates the role of changing R&D focus from yield maximization to input saving technologies (fertilizers and pesticides). The
Zuzana Smeets Křístková, Michiel van Dijk, Robert M'Barek, Hans van Meijl, Tomas Ratinger   +4 more
wiley   +1 more source

Do Tax Incentives for Farmland Leases Increase Farm Supply? Evidence From Iowa's Beginning Farmer Tax Credit

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT In recent decades, agriculture has become increasingly concentrated through horizontal mergers and acquisitions via corporate entities, and policy makers are concerned this will be exacerbated by the aging population of farm operators. To reduce market concentration in agriculture, many states have enacted policies to entice new prospective ...
Justin M. Ross, Wesley M. Zebrowski, Julia C. D. Valliant   +2 more
wiley   +1 more source

Coping With Production Risk: Effects of Sown Plant Diversity on the Attractiveness of Crop Insurance in Grasslands

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT Increased frequency of extreme weather events, particularly droughts, threatens grassland farming by destabilizing yields and farms' economic viability. We examine, theoretically and through numerical simulations, how sown plant diversity (natural insurance) influences the attractiveness of indemnity and drought index insurance (formal ...
Nicolas Alou, Sergei Schaub, Martin Quaas, Robert Finger   +3 more
wiley   +1 more source

Large historical growth in global terrestrial gross primary production

Nature, 2017
Growth in terrestrial gross primary production (GPP)-the amount of carbon dioxide that is 'fixed' into organic material through the photosynthesis of land plants-may provide a negative feedback for climate change. It remains uncertain, however, to what extent biogeochemical processes can suppress global GPP growth. As a consequence, modelling estimates
Campbell, J. E., Berry, J. A., Seibt, U., Smith, S. J., Montzka, S. A., Launois, Thomas, Belviso, Sauveur, Bopp, Laurent, Laine, M.   +8 more
openaire   +4 more sources

Understanding Egg Price Volatility and Policy Implications in the U.S. With Machine Learning

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT Eggs are an inexpensive and sustainable source of proteins, but volatility in the U.S. egg prices has intensified in recent years, raising concerns over food affordability and market stability. This study examines the drivers of U.S. egg price dynamics over 2004–2025 using a two‐stage framework that combines LASSO‐based variable selection with
Xuemei Zhao, Simon Meister, Lucie Maruejols, Xiaohua Yu   +3 more
wiley   +1 more source

Enhanced gross primary production and evapotranspiration in juniper‐encroached grasslands

Global Change Biology, 2018
AbstractWoody plant encroachment (WPE) into grasslands has been occurring globally and may be accelerated by climate change in the future. This land cover change is expected to alter the carbon and water cycles, but it remains uncertain how and to what extent the carbon and water cycles may change with WPE into grasslands under current climate. In this
Jie Wang, Xiangming Xiao, Yao Zhang, Yuanwei Qin, Russell B. Doughty, Xiaocui Wu, Rajen Bajgain, Ling Du   +7 more
openaire   +5 more sources

Spatiotemporal patterns of terrestrial gross primary production: A review [PDF]

Reviews of Geophysics, 2015
AbstractGreat advances have been made in the last decade in quantifying and understanding the spatiotemporal patterns of terrestrial gross primary production (GPP) with ground, atmospheric, and space observations. However, although global GPP estimates exist, each data set relies upon assumptions and none of the available data are based only on ...
Anav, Alessandro, Friedlingstein, Pierre, Beer, Chris, Ciais, Philippe, Harper, Anna, Jones, Chris, Murray-Tortarolo, Guillermo, Papale, Dario, Parazoo, Nicholas, Peylin, Philippe, Piao, Shilong, Sitch, Stephen, Viovy, Nicolas, Wiltshire, Andy, Zhao, Maosheng   +14 more
openaire   +3 more sources

Comparing the performance of vegetation indices for improving urban vegetation GPP estimation via eddy covariance flux data and Landsat 5/7 data

Ecological Informatics
Urban vegetation is pivotal in enhancing regional ecological balance and sequestering significant amounts of carbon dioxide (CO2) through photosynthesis, thereby contributing substantially to regional carbon budgets.
Qianghao Zeng, Xuehe Lu, Suwan Chen, Xuan Cui, Haidong Zhang, Qian Zhang   +5 more
doaj   +1 more source

Unpacking the Farmland Capitalization Effect of Ethanol Establishment

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT We unpack the impact of expansions in ethanol production—as measured by proximity to newly constructed ethanol plants and capacity expansions—on farmland values using land transaction data from Kansas in combination with modern causal inference techniques.
Gabriel S. Sampson, Jisang Yu
wiley   +1 more source