Individual Parcels Research Articles

A Holistic Irrigation Advisory Policy Scheme by the Hellenic Agricultural Organization: An Example of a Successful Implementation in Crete, Greece

The aim of this communication article is to present a successful irrigation advisory scheme on the island of Crete (Greece) provided by the Hellenic Agricultural Organization (ELGO DIMITRA), which is well adapted to the different needs of farmers and water management agencies. The motivation to create this advisory scheme stems from the need to save water resources while ensuring optimal production in a region like Crete where droughts seem to occur more and more frequently in recent years. This scheme/approach has three different levels of implementation (components) depending on the spatial level and end-users’ needs. The first level concerns the weekly irrigation bulletins in the main agricultural areas of the island with the aim of informing farmers and local water managers about crop irrigation needs. The second level concerns an innovative digital web-based platform for the precise determination of the irrigation needs of Crete’s crops at a parcel level as well as optimal adaptation strategies in the context of climate change. In this platform, important features such as real-time meteorological information, spatial data on the cultivation type of parcels, validated algorithms for calculating crop irrigation needs, an accurate soil texture map derived from satellite images, and appropriate agronomic practices to conserve water based on cultivation and the geomorphology of a farm are considered. The third level of the proposed management approach includes an open-source Internet of Things (IoT) intelligent irrigation system for optimal individual parcel irrigation scheduling. This IoT system includes soil moisture and atmospheric sensors installed on the field, as well as the corresponding laboratory soil hydraulic characterization service. This third-level advisory approach provides farmers with specialized information on the automated irrigation system and optimization of irrigation water use. All the above irrigation advisory approaches have been implemented and evaluated by end-users with a very high degree of satisfaction in terms of effectiveness and usability.

Pressure Gain Combustion for Gas Turbines: Analysis of a Fully Coupled Engine Model

Abstract The ‘Shockless Explosion Combustion’ (SEC) concept for gas turbine combustors, introduced in 2014, approximates constant volume combustion (CVC) by harnessing acoustic confinement of autoigniting gas packets. The resulting pressure waves simultaneously transmit combustion energy to a turbine plenum and facilitate the combustor's recharging against an average pressure gain. Challenges in actualizing an SEC-driven gas turbine include i) the creation of charge stratifications for nearly homogeneous autoignition, ii) protecting the turbo components from combustion-induced pressure fluctuations, iii) providing evidence that efficiency gains comparable to those of CVC over deflagrative combustion can be realized, and iv) designing an effective one-way intake valve. This work addresses challenges i)-iii) utilizing computational engine models incorporating a quasi-one-dimensional combustor, zero- and two-dimensional compressor and turbine plena, and quasi-stationary turbo components. Two SEC operational modes are identified which fire at roughly one and two times the combustor's acoustic frequencies. Results for SEC-driven gas turbines with compressor pressure ratios of 6:1 and 20:1 reveal 1.5-fold mean pressure gains across the combustors. Assuming ideally efficient compressors and turbines, efficiency gains over engines with deflagration-based combustors of 30% and 18% are realized, respectively. With absolute values of 52% and 66%, the obtained efficiencies are close to the theoretical Humphrey cycle efficiencies of 54% and 65% for the mentioned pre-compression ratios. Detailed thermodynamic cycle analyses for individual gas parcels suggest that there is room for further efficiency gains through optimized plenum and combustor designs.

Disentangling Carbon Concentration Changes Along Pathways of North Atlantic Subtropical Mode Water

AbstractNorth Atlantic subtropical mode water (NASTMW) serves as a major conduit for dissolved carbon to penetrate into the ocean interior by its wintertime outcropping events. Prior research on NASTMW has concentrated on its physical formation and destruction, as well as Lagrangian pathways and timescales of water into and out of NASTMW. In this study, we examine how dissolved inorganic carbon (DIC) concentrations are modified along Lagrangian pathways of NASTMW on subannual timescales. We introduce Lagrangian parcels into a physical‐biogeochemical model and release these parcels annually over two decades. For different pathways into, out of, and within NASTMW, we calculate changes in DIC concentrations along the path (ΔDIC), distinguishing contributions from vertical mixing and biogeochemical processes. The strongest ΔDIC is during subduction of water parcels (+101 μmol L−1 in 1 year), followed by transport out of NASTMW due to increases in density in water parcels (+10 μmol L−1). While the mean ΔDIC for parcels that persist within NASTMW in 1 year is relatively small at +6 μmol L−1, this masks underlying dynamics: individual parcels undergo interspersed DIC depletion and enrichment, spanning several timescales and magnitudes. Most DIC enrichment and depletion regimes span timescales of weeks, related to phytoplankton blooms. However, mixing and biogeochemical processes often oppose one another at short timescales, so the largest net DIC changes occur at timescales of more than 30 days. Our new Lagrangian approach complements bulk Eulerian approaches, which average out this underlying complexity, and is relevant to other biogeochemical studies, for example, on marine carbon dioxide removal.

TINJAUAN YURIDIS PEMECAHAN TANAH LEBIH DARI LIMA BIDANG UNTUK HAK MILIK PERORANGAN

The emergence of a regulation of the Minister of Agrarian Affairs and Spatial Planning or the Head of the National Land Agency on the prohibition of land division of more than five parcels for individual property rights is a way to overcome the rampant housing or disguised lots that have sprung up so far. The regulation is stipulated in Regulation of the Minister of Agrarian Affairs and Spatial Planning or Regulation of the Head of the National Land Agency Number 16 of 2021 concerning the Third Amendment to Regulation of the Minister of Agrarian Affairs or Head of the National Land Agency Number 3 of 1997 concerning Provisions for the Implementation of Government Regulation Number 24 of 1997 concerning Land Registration. The purpose of this writing is to find out how the juridical review of land splitting of more than five parcels for individual property rights and what the legal consequences are for individuals who split more than five parcels of land. This research uses normative juridical approach with legislation. The result of this research is that the ownership of property rights to individual land or the division of individual land parcels is not allowed to exceed five parcels except if the base of the right comes from the transfer of inheritance rights or the base of the right with the building rights certificate. Apart from that, the division of more than five parcels must also be balanced with permits from the authorized agency, and usually with the base of the Building Rights Title, but in the current era there are still many Individual Property Rights whose ownership exceeds five parcels. However, with the emergence of the Regulation of the Minister of Agrarian Affairs and Spatial Planning or Regulation of the Head of the National Land Agency Number 16 of 2021, the regulation is more strictly applied in practice. Keywords: Land Division of More than Five Parcels, Agrarian.

Rehabilitation challenges for the onshore coal seam gas sector in Australia

The development of conventional oil and gas reserves followed by valorisation of coal seam gas (CSG) reserves in Queensland has seen the installation of over 16,000 wells. These wells are accompanied by thousands of kilometres of gathering lines, compression and water treatment facilities and transmission pipelines. The major rehabilitation challenges for the industry result less from technical challenges but rather from the sheer scale of the task. At present, the CSG industry continues to grow, and few of the CSG wells (other than exploration and appraisal wells) have yet reached the end of their life. The US experience presents a cautionary tale for adequate financial provisioning to mitigate the risks of orphaned wells. Secondly, the rehabilitation of multiple small parcels of land such as drill pads presents logistical challenges. Strategies to aggregate parcels for relinquishment will be required if the industry is to avoid thousands of individual land parcel evaluations at the time of relinquishment. These two rehabilitation challenges will be explored, risks for the industry and community assessed, and a call made for industry and government to work collaboratively to ensure an orderly and responsible rehabilitation program becomes an integral part of ongoing operations.

Roots of urban equality: Are low-income neighborhoods paying more for street trees?

This study investigates the potential influence of street trees on the single-family housing market in Seattle between 2010 and 2020, specifically examining how the relationship between the number of street trees and housing prices varies across neighborhoods with different income levels. It further discusses the policy implications for promoting environmental justice in urban tree-planting endeavors. We used Seattle’s street tree planting data from the 1950s to 2020 and housing transaction records between 2010 and 2020, covering 61,055 housing transactions. Four buffer lengths were applied to associate street trees with individual housing parcels and transactions. The relationship between street trees and the single-family housing market was evaluated through linear regressions and spatial lag models using Spatial Two-stage Least Squares (S2SLS). An interaction term between the number of street trees and neighborhood income was also used to examine the potential varying associations across neighborhoods with different income levels. Subsequently, we calculated the marginal implicit price (MIP) across the city. The results indicate that street trees are valued more in the housing market of lower-income areas. The findings underscore the importance of community-based intervention in the tree-planting process, especially in lower-income areas, to promote environmental justice and enhance neighborhood greenery.

Re-Conceptualizing Vertical Subdivision Development for Sustainable, Affordable Housing Delivery

Research on sustainable, affordable housing is evolving. Yet, its conceptual efficacy in light of the changing needs of today’s cities and targeted low-to-middle-income households remains unknown. In today’s rapidly urbanizing world, understanding the conceptual relevance and importance of land use planning tools such as vertical subdivision to the delivery of sustainable housing is tenable. In response to this knowledge gap, this entry inquires, how can the delivery of affordable housing be configured in a manner that leverages the potential of a redefined vertical subdivision development to optimize densities and ensure that housing affordability is sustainable? Here, this entry re-defines vertical subdivision development as a housing planning and design tool that allows for the segregation of air spaces into individual volumetric land parcels that mimic the environmental features of the land-on-ground, such that housing construction within such volumetric spaces is a function of the contextually relevant needs of occupants. This entry demonstrates a paradigm shift from existing housing infrastructure planning models and narratives to one that responds to and addresses all three dimensions of sustainability: economic (sustainable affordability), environmental (sustainable densities), and social (occupant wellness) in the housing infrastructure planning and delivery process.

Experimental Study of Compressive Strength of 8M Geopolymer Mortar for Different Combinations of Eucalyptus-ash with Ggbs(45µ)

Concrete is the material which is unstintingly used in the construction sector and the product of cement is one among the reason for global warming due to release of carbon dioxide, to minimize its effect on nature we must use artificial by- product as an indispensable material. Among artificial by- product, operation of cover ash is more. The geopolymer mortar made by the using cover- ash set sluggishly in ambient temperature and needs heat curing. To overcome this limitation, Ground Granulated Blast Furnace Sediment(GGBS) grease paint is used as a cementious material which shows considerable gain in strength. In this paper, we delved the parcels of geopolymeric binder prepared using the Ground “Granulated Blast Furnace Sediment”(GGBS) and eucalyptus ash without using conventional cement. The individual parcels of the GM for 1:3 rate, similar as compressive strength test were determined as per applicable Indian norms. cells of size (70.6x70.6x70.6) mm were casted and cured in ambient condition for molarity 8M with different rates and different temperatures. After the trials, compressive strength is increased for adding number of days of curing. Also compressive strength dropped for adding Na2SiO3/ NaOH rates and adding roaster curing temperatures

Farm size, spatial externalities, and wind energy development

AbstractThe global push for renewable energy must overcome the local challenge of convincing neighboring landowners to lease their properties for wind power. Is this challenge more or less pronounced in rural landscapes with small landholdings? Our theoretical model combines ideas from literatures on the commons, anticommons, and spatial externalities to explain conditions when small landholdings could promote or inhibit voluntary leasing. Empirically, we estimate the effects of landholding size and landscape fragmentation on wind farm uptake across rural areas of the United States over the past 20 years. Evidence from three spatial levels of analysis (counties, square‐mile sections, and individual parcels) indicates that areas with more landowners have less installed wind capacity after controlling for windiness, access to transmission lines, and other relevant factors that vary across and within counties. The findings imply that fragmented ownership, which is an overlooked factor in studies of the feasibility of decarbonization, will pose an impediment to future wind expansion on private land as remaining areas without wind development become disproportionately fragmented.

Hydro-bio-geo-socio-chemical interactions and the sustainability of residential landscapes.

Residential landscapes are essential to the sustainability of large areas of the United States. However, spatial and temporal variation across multiple domains complicates developing policies to balance these systems' environmental, economic, and equity dimensions. We conducted multidisciplinary studies in the Baltimore, MD, USA, metropolitan area to identify locations (hotspots) or times (hot moments) with a disproportionate influence on nitrogen export, a widespread environmental concern. Results showed high variation in the inherent vulnerability/sensitivity of individual parcels to cause environmental damage and in the knowledge and practices of individual managers. To the extent that hotspots are the result of management choices by homeowners, there are straightforward approaches to improve outcomes, e.g. fertilizer restrictions and incentives to reduce fertilizer use. If, however, hotspots arise from the configuration and inherent characteristics of parcels and neighborhoods, efforts to improve outcomes may involve more intensive and complex interventions, such as conversion to alternative ecosystem types.

E2EVAP: End-to-end vectorization of smallholder agricultural parcel boundaries from high-resolution remote sensing imagery

Rapid and accurate agricultural parcel mapping from high-resolution remote sensing imagery is fundamental to precision agriculture for smallholder farming systems. However, due to the narrow and small-size parcels, and the significant spatio-spectral variability, the existing two-stage segmentation methods cannot extract individual parcels automatically. In this article, the end-to-end vectorization of smallholder agricultural parcel boundaries (E2EVAP) framework is proposed for extracting the vertices of each parcel boundary individually in smallholder farming regions, where the semantic-contour interaction and topological loss through hierarchical instance representation (called “channel to instance”) are designed for aggregating the foreground features and jointly establishing the topological relationship between instances to alleviate the topological overlap between parcel objects. Vertex shift correction based on the deep attention corner snake module guided by the parcel boundaries is also proposed to adaptively correct the boundary vertex location shift of large-scale irregular parcels. The comprehensive experimental results obtained on the iFLYTEK public agricultural parcel dataset confirm that E2EVAP shows a superior performance (with a mask mAP of 0.335 and a boundary mAP of 0.201), compared with the pixel-based (such as Mask R-CNN, HTC, and SOLOv2) and contour-based (such as DeepSnake and E2EC) benchmark methods. We believe that E2EVAP has the potential to be widely used for accurate vectorization mapping of agricultural parcels in smallholder farming areas such as South Africa and southern China. The code of E2EVAP is at https://github.com/YangPanHZAU/E2EVAP.

Estimating the parcel-level impacts of agricultural conservation easements on farmland loss using satellite data in New England

The rapid loss of farmland to development has long been a concern of policymakers and conservation non-profits globally. In the United States, agricultural conservation easements are a widespread policy tool used to protect farmland from conversion to development in perpetuity. However, the extent to which these easements reduce farmland loss to development within their boundaries is rarely studied at the spatial scale at which easement adoption decisions are made: the individual parcel. Our case study from six New England states uses a rich dataset of 1.97 million parcels, novel estimates of annual parcel-level land cover change from 1988 to 2016, and a quasi-experimental research design to estimate the extent to which 3959 farmland easements avoided conversion of cropland to development. We examine and discuss the suitability of remote sensing data and quasi-experimental matching methods for impact assessments in this geographic and political context. Our empirical results suggest that agricultural conservation easements have reduced farmland loss to development. The magnitude of avoided farmland loss is small (0.0067% ± 0.0019% of parcel area per annum), largely because of a low background rate of farmland loss across New England (0.0027% of total area per annum). Our findings suggest that the spatial allocation of farmland easements has historically not prioritized the highest-threat locations where impacts would be most noticeable, as allocation is driven by a diverse range of goals in addition to avoiding farmland loss.

Rice crop growth monitoring with sentinel 1 SAR data using machine learning models in google earth engine cloud

The rainfed rice crop monitoring and yield prediction have been Herculean task with optical remote sensing systems operation under cloud cover. The free-of-cost sentinel 1 based SAR data along with machine learning models in GEE cloud was used for rainfed rice crop monitoring for 214 farm plots on a micro-scale in Hooghly, West Bengal, India. The individual plot rice parcel showed a low median backscattering signature for the SAR data during the land preparation/crop transplanting stages with VH and VV at −17.63 dB and −9.63 dB, respectively; whereas, higher median backscattering was experienced at the peak vegetation stage of VH and VV Polarization with −15.20 dB and −6.34 dB, respectively. The random forest model was found best suited with R2 of 0.87 for total crop biomass estimation. The backscatter values have a sound correlation with Heading NDVI, which validated the suitability of SAR images for crop monitoring under rainfed conditions. Further, crop yield prediction using SAR data and total biomass data through machine learning models showed positive correlation for Random forest, Extreme gradient boosting, and Decision tree models with an Area under receiver operating characteristics curve (AUROC) test accuracy of 0.99. These low-cost, high temporal SAR data based models can be used for near real-time crop monitoring even under overcast conditions in near future.

An operational model for capturing grape ripening dynamics to support harvest decisions

Grape ripening is a critical phenological phase during which many metabolites that impact wine quality accumulate in the berries. Major changes in berry composition include a rapid increase in sugar and a decrease in malic acid content and concentration. Its duration is highly variable depending on grapevine variety, climatic parameters, soil type and management practices. Together with the timing of mid-veraison, this duration determines when grapes can be harvested.Viticulturists and winemakers monitor the sugar-to-total acidity ratio (S/TA) during grape ripening and start harvesting grapes when this ratio reaches the optimum value for the desired wine style. The S/TA ratio evolves linearly as a function of thermal summation during the first four weeks following the onset of ripening. The linearity of the evolution of the S/TA ratio as a function of thermal time during the first four weeks following mid-veraison is applied in this study on two large data sets encompassing (1) 53 varieties studied during 10 years with two to four replicates for each combination of year and cultivar and (2) two varieties, cultivated on three soil types over 13 years. Grape ripening speed is highly variable. The effects of the year impact ripening speed more than the effects of the soil or the variety, although all three effects are highly significant. Grape ripening speed decreases with berry weight and also varies with vine water status. By using this approach, viticulturists and winemakers can assess four weeks after mid-veraison, for each individual vineyard parcel, at what speed grape ripening progresses. Combined with precise mid-veraison scoring, expertise from previous vintages and complementary approaches like sensory assessment of berries, it allows harvest date estimates to be fine-tuned. The results of this study can also be used to identify slow ripening varies, which are better performing in warm climates and, thus, better adapted to climate change.

Can the soil seed bank of Rumex obtusifolius in productive grasslands be explained by management and soil properties?

Rumex obtusifolius is a problematic weed in temperate grasslands worldwide as it decreases yield and nutritional value of forage. Because the species can recruit from the seed bank, we determined the effect of management and soil properties on the soil seed bank of R. obtusifolius in intensively managed, permanent grasslands in Switzerland (CH), Slovenia (SI), and United Kingdom (UK). Following a paired case-control design, soil cores were taken from the topsoil of grassland with a high density of R. obtusifolius plants (cases) and from nearby parcels with very low R. obtusifolius density (controls). Data on grassland management, soil nutrients, pH, soil texture, and density of R. obtusifolius plants were also collected. Seeds in the soil were germinated under optimal conditions in a glasshouse. The number of germinated seeds of R. obtusifolius in case parcels was 866 ±152 m-2 (CH, mean ±SE), 628 ±183 m-2 (SI), and 752 ±183 m-2 (UK), with no significant difference among countries. Densities in individual case parcels ranged from 0 up to approximately 3000 seeds m-2 (each country). Control parcels had significantly fewer seeds, with a mean of 51 ±18, 75 ±52, and 98 ±52 seeds m-2 in CH, SI, and UK, respectively, and a range between 0 and up to 1000 seeds m-2. Across countries, variables explaining variation in the soil seed bank of R. obtusifolius in case parcels were soil pH (negative relation), silt content (negative), land-use intensity (negative), and aboveground R. obtusifolius plant density (positive). Because a large soil seed bank can sustain grassland infestation with R. obtusifolius, management strategies to control the species should target the reduction in the density of mature plants, prevention of the species' seed production and dispersal, as well as the regulation of the soil pH to a range optimal for forage production.

Austrian Cadastre still in use – Example proceedings to determine the legal status of land property in southern Poland

The cadastral map is a large-scale cartographic record of property ownership that preserves the dimensions and shape of an owned land parcel on the earth surface, but also the spatial relationship of all individual parcels to each other. There are hundreds of thousands of cadastral maps to be found all over the world. Cadastral maps aided land assignment and taxation, presenting statistics essential for territorial administration, or as a symbol of state control over land. The historical land cadastre introduced in the early nineteenth century in the Austrian Empire, was the foundation of many countries' land register systems. One of the areas it covered was Galicia, a southern part of Poland annexed by Austria in the eighteenth century during the Partitions. The study evaluates the use of old Austrian cadastral maps in southern Poland, mainly in matters related to property boundaries. The Austrian Cadastre lost its importance in Poland after the Second World War due to sociopolitical changes. Still, it became a source of data on real property boundaries once again after the 1989 transformation, which restituted and enhanced ownership rights. Today, modern court proceedings on boundary disputes, easement appurtenant decisions, release of property, grant of property title, or usucaption often need to refer to historical legal sources, including the Austrian Cadastre (cadastral maps and land tax registers) to determine ownership boundaries. The paper presents numerous examples of modern uses of historical land cadastre documents, including cadastral maps and land tax registers in land surveying and legal procedures in Poland. The results show that data from the historical land cadastre remain a source of information when determining ownership boundaries despite the time passed. Therefore, the cadastral documentation offers not only historical and research value but also a practical one.

Highway expansion and impacts on land use changes: An event study approach

Despite its impact on both sprawl and carbon emissions, developing or expanding highway infrastructure remains the object of strong political support. Highway access provides important advantages for firms and households, generating powerful incentives to develop new built areas through the conversion of vacant land. Based on the case study of the expansion of Highway 30 on Montréal’s South Shore region between 2000 and 2019, this paper investigates how new highway infrastructure impacts the construction of new industrial and commercial buildings on individual parcels. Using a panel dataset, an event study model is developed to estimate the impact of the proximity to highway access ramps on the probability of construction. Results show that highway infrastructure increases the probability of construction of new industrial and commercial buildings, even if public authorities aim to limit such possibilities by legal constraints and laws.

Beyond perception: Spatial analysis of detached ADU potential on residential lots in Windsor, Ontario

AbstractThis paper analyzes the spatial potential of detached additional dwelling units (ADUs) in Windsor, Ontario. A new GIS model, which integrates various geoprocessing commands in ArcGIS 10.8.1, is developed to calculate whether the minimum allowable size of a detached ADU can fit within the total buildable area of a residential property, based on the setbacks, the lot coverage requirements, and other factors (such as parking and flood plain areas). The model uses publicly sourced data that were obtained from the City of Windsor's Open Data Portal. More specifically, individual residential parcels and associated building footprints along with street centerlines are used as inputs to the model. The outputs are then categorized into three types (suitable, potentially suitable, and not suitable) to demonstrate where detached ADUs can be built in compliance with the local zoning bylaws, on both an individual lot basis and at an aggregate level. The conducted analysis reveals the potential of existing residential neighbourhoods in a mid‐size city, and has many implications for homeowners, policymakers, and researchers with respect to increasing housing supply within current Canadian municipalities.

Filling the gap: A comparative analysis of stormwater utility fees and stormwater program budgets in the Puget Sound watershed

AbstractStormwater utility fees (SUFs) are one way to fill the growing gap between stormwater management needs and available funding. However, there is a lack of data on the overall role they play in stormwater program budgets. This paper presents an evaluation of SUFs across multiple jurisdictions to understand their contributions to overall revenue, the uses of revenue, and the extent to which ratemaking is equitable within and between jurisdictions. We compiled data on SUFs for 124 jurisdictions and program budgets for 80 jurisdictions to describe the composition of revenues and influence of municipal stormwater permit status. We also calculated SUFs applied to individual parcels in 11 jurisdictions to assess two equity outcomes: proportionality and affordability. Results indicate that SUF revenue contributed 91% of the $537.7 million in total 2019 stormwater program operational revenue. There was enormous variation among jurisdictions in annual SUF revenue per capita ($17–328), per housing unit ($42–1007), and on an area‐normalized basis (<$0.01–2.70 per ft2 impervious surface). SUFs in some cities were large enough to burden low‐income households, and the way they are billed may preclude assistance for renters. In the context of escalating costs driven in part by new regulatory requirements, these results illustrate the tension between achieving full cost recovery for stormwater services and ensuring prices are affordable for ratepayers.

Star Formation Variability as a Probe for the Baryon Cycle within Galaxies

We investigate the connection between the regulation of star formation and the cycling of baryons both within and in and out of galaxies. We use idealized numerical simulations of Milky Way–mass galaxies, in which we vary the galaxy morphology and stellar feedback strength. By following individual gas parcels through the disk, spiral arms, and massive star-forming clumps, we quantify how gas moves through the different phases of the interstellar medium (ISM) and forms stars. We show that the residence time of gas in the dense ISM phase (τ SF), the nature of spiral arms, and the clump properties depend on both the galaxy morphology and stellar feedback. We quantify signatures of the baryon cycle within galaxies using the temporal and spatial power spectrum density (PSD) of the star formation rate (SFR). Stronger stellar feedback leads to more bursty star formation while the correlation timescale of the SFH is longer, because stronger feedback dissolves the dense ISM phase, leading to a more homogeneous ISM and a decrease in τ SF. The bulge strength has a similar effect: the deep gravitational potential in a bulge-dominant galaxy imposes a strong shear force that breaks apart gas clumps in the ISM; this subsequently inhibits the fragmentation of gas and therefore the star formation in the disk, leading to a decrease in the spatial power on scales of ∼1 kpc. We conclude that measurements of the temporal and spatial PSD of the SFR can provide constraints on the baryon cycle and the star formation process.