Soil degradation due to loss of soil organic carbon is a serious concern in semiarid agroecosystems. Biochar and other organic char products have long been known to increase soil organic carbon. In this study, three-year field observations were carried out on use of coal char (CC) and biochar (BC) as soil amendments in unirrigated semiarid rangeland soil. Coal was pyrolyzed at three different temperatures of 650, 750, and 800 °C to form CC650, CC750, and CC800, respectively, and BC was obtained from a local commercial producer. Manure, CC, and BC were incorporated in soil at 10% (v/v). Analyses of plant growth (aboveground biomass) and soil properties were performed and compared with the control treatment without char. In all three years, CC applied with manure (CC650M) produced significantly greater grass biomass, by 95, 42, 101%, and BC applied with manure (BCM) increased grass biomass by 89, 39, 52% in 2018, 2019, and 2020, than the controls in the respective years. Soil tests a year after application of char indicated significantly increased soil organic matter (OM) with CC and BC treatments (1.60–2.93%) compared with the control (1.37%). However, further detailed studies are required to investigate CC and BC interactions with soil in unirrigated semiarid rangelands.

Dispersed development is often associated with negative externalities and ensuing external costs. As a consequence, there is a global need for informed decision making on issues of land-use change and conversion that includes the influences of differing urban forms on the costs of public services. In this paper we quantify a relationship between cost of services and urban form through the development of an econometric model for the provision of public safety for a county in the Mountain West of the USA. The research extends previous modeling of public services to include a spatial index representing urban form, the pattern of the built environment disaggregated by land use, as an explanatory variable for input cost. The use of an index allows quantifying and tracking changes in urban form over time. The index is based on the Moran's I measure of spatial autocorrelation. It is calculated using the dollar values of buildings aggregated spatially within grid cells. By leveraging Moran's I , the index captures local and global statistics representing the intensity of the built environment by land-use category. Local Moran's I statistics quantify the contribution of individual cells to overall clustering. Global Moran's I statistics are suitable for inclusion as a spatial index in time series regression analysis. Results suggest residential development is a statistically significant driver of local government expenditures on inputs to policing services. This paper contributes to the literature on fiscal impact analysis by incorporating a measure of urban form as a determinant of local government expenditures on services and, ultimately, on the level of service provision. This provides a direct link between urban form and the cost of public services.

This paper documents the use of geographic information science based planning support systems to evaluate the effects of infrastructure development on residential growth and resulting public service expenditure. The case example presented here investigates the impacts associated with a large water infrastructure development project. The effect of infrastructure on residential development is evaluated by comparing growth trends within areas of different levels of water supply and sewerage services. The effect of changing residential development patterns on public services expenditure is evaluated with a spatially explicit model linking urban form with revenues, expenditures and fiscally efficient areas of service provision for a delivery-based public service, police. Results confirm that the development of water infrastructure leads to residential growth and also indicate this growth in some locations leads to fiscally efficient provision of a public service. A primary recommendation from this research is that, in anticipation of growth, water planning should be comprehensive rather than single issue focused. Planning support systems are indicated to be useful tools supporting policy refinement for land-use and water planning.

This article describes the conception and development of a market-based conservation program in Wyoming whose purpose was threefold: to compensate landowners for good stewardship of their land and water resources; facilitate meaningful conservation; and encourage environmentally responsible energy development. The program was developed with strong stakeholder support against a backdrop of significant regulatory change. The project, called the Wyoming Conservation Exchange (WCE), represents a project-based alternative to more traditional program-based Extension efforts. This article evaluates ways in which the WCE can act as a road map—but also a cautionary tale—for similar Extension efforts in the future.