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Entries in land use (22)

Monday
May062013

CPAD 1.9 released today: mapping protected areas in California

CPAD, the California's Protected Areas Database is releasing a new version. This product maps lands owned in fee by public and nongovernmental organizations for open space purposes, ranging from small neighborhood parks to large wilderness areas.

CPAD 1.9 a major update that corrects many outstanding issues with CPAD holdings data and also has many new additions, particular for urban parks.

CPAD is produced and managed by GreenInfo Network, a 16 year old non-profit organization that supports public interest groups and agencies with geospatial technology. CPAD data development is conducted with Esri ArcGIS products, supplemented with open source web application tools. 

Find the data here.

Wednesday
Jan092013

Lisa Schile is off to Abu Dhabi

Dr. Lisa Schile is off to Abu Dhabi for a postdoctoral research position with the Smithsonian Institution. She'll be working on a project monitoring carbon sequestration in wetlands. We checked out some of the available Abu Dhabi imagery on-line. The country has a long and interesting coastline, with many mangroves and wetlands, and of course the ever increasing coastal development. Here is a snapshot from NASA of coastal development. Lisa has started a blog, and taking lots of pics for us to see.

Thursday
Dec132012

Launch of Sonoma County Veg Mapping Program

The Sonoma County Agricultural Preservation and Open Space District has begun a 3-5 year program to map Sonoma County’s diverse plant communities.

An accurate, up-to-date map of vegetation and habitat type is key to ensuring good planning and management for watershed protection, flood control, fire and fuels management, and wildlife habitat conservation. A vegetation map is also critical to assessing climate benefits provided by the landscape, such as the amount of carbon being absorbed from the atmosphere or the degree to which the landscape is buffering extreme weather events.

These folks are using 3-6-inch CIR imagery and obia to map vegetation across Sonoma County. GIF is serving up the imagery! Check it out!

Wednesday
Oct102012

ESRI MODIS Toolbox

Cool MODIS NDVI tool pointed out to us from Jenny P.

This toolbox contains scripts that download NASA satellite imagery from MODIS and import it into ArcMap. The four data products currently supported are: evapotranspiration, land surface temperature, normalized difference vegetation index (NDVI), and enhanced vegetation index (EVI).

These products are available for the entire surface of the Earth at 1 km resolution and for any month going back to January 2000, when MODIS first launched aboard the satellite Terra.

http://resources.arcgis.com/gallery/file/geoprocessing/details?entryID=9CC382D2-1422-2418-34F8-DC9F97B24052

Monday
Sep242012

Land Change Science Position Open!

We are very excited to have open a new Cooperative Extension specialist position in Land Change Science. The successful Land Change CE specialist will have a PhD, and will develop a vibrant applied research program, primarily based in California. There are no formal teaching duties with this position, instead, the incumbant will have outreach and extension duties.

We are searching for someone who can help us understand, predict and plan for the complexities of land use change in California. This might be someone from geography, landscape ecology, sociology, or economics, for example, and might focus on planning, modeling or observations of land change, biophysical feedbacks from land change, or spatial analysis. But they must be an adept and capable communicator who can speak to diverse audiences, from landowners, to politicians, to farmers, to scientists, to planners, to citizens.

The Specialist would provide science-based solutions and bridge conflicting interests with knowledge, targeted research, and local education regarding the relationships between expanding population and climate change, and the remaining matrix of wild landscapes, urban areas, working landscapes and agriculture.

The Specialist would provide resources for county-based Cooperative Extension personnel, including learning from UCCE personnel about the needs of decision makers at the local level, and acting as a information and training resource for the use of new tools (GIS, remote sensing, smart phone applications, etc.) for land use analysis.

Please consider applying if this fits you! I will be happy to answer questions.

Thursday
Sep202012

New study on diabetes risk and neighborhood walkability

The reading for this week's GIS class on vector analysis discussed network buffer measures of neighborhood walkability, and the class came up with numerous components of the built and social environment that the authors didn't include in their land-use based walkability measure that also likely influence people's walking behaviors (e.g. destinations to walk to, crime/safety, trees and greenness, sidewealk quality and ramps, traffic, disincentives from parking costs, etc.). It was a great discussion! I just came acrosos this write-up about a recent article in the journal Diabetes Care that finds a strong relationship between neighborhood walkability and diabetes risk, especially for low-income immigrants. The UC Library doesn't have online access to the most recent one month of articles for this journal, so I haven't been able to look at the full methodolgy for their walkabilty measure. But, I wanted to note it here and will follow-up later with details. Or, if anyone finds access to the full article, please let me know!

 

Saturday
Mar242012

ASPRS 2012 Wrap-up

ASPRS 2012, held in Sacramento California, had about 1,100 participants. I am back to being bullish about our organization, as I now recognize that ASPRS is the only place in geospatial sciences where members of government, industry, and academia can meet, discuss, and network in a meaningful way. I saw a number of great talks, met with some energetic and informative industry reps, and got to catch up with old friends. Some highlights: Wednesday's Keynote speaker was David Thau from Google Earth Engine whose talk "Terapixels for Everyone" was designed to showcase the ways in which the public's awareness of imagery, and their ability to interact with geospatial data, are increasing. He calls this phenomena (and GEE plays a big role here): "geo-literacy for all", and discussed new technologies for data/imagery acquisition, processing, and dissemination to a broad public(s) that can include policy makers, land managers, and scientists. USGS's Ken Hudnut was Thursday's Keynote, and he had a sobering message about California earthquakes, and the need (and use) of geospatial intelligence in disaster preparedness.

Berkeley was well represented: Kevin and Brian from the GIF gave a great workshop on open source web, Kevin presented new developments in cal-adapt, Lisa and Iryna presented chapters from their respective dissertations, both relating to wetlands, and our SNAMP lidar session with Sam, Marek, and Feng (with Wenkai and Jacob from UCMerced) was just great!

So, what is in the future for remote sensing/geospatial analysis as told at ASPRS 2012? Here are some highlights:

  • Cloud computing, massive datasets, data/imagery fusion are everywhere, but principles in basic photogrammetry should still comes into play;
  • We saw neat examples of scientific visualization, including smooth rendering across scales, fast transformations, and immersive web;
  • Evolving, scaleable algorithms for regional or global classification and/or change detection; for real-time results rendering with interactive (on-the-fly) algorithm parameter adjustment; and often involving open source, machine learning;
  • Geospatial data and analysis are heavily, but inconsistently, deployed throughout the US for disaster response;
  • Landsat 8 goes up in January (party anyone?) and USGS/NASA are looking for other novel parterships to extend the Landsat lifespan beyond that;
  • Lidar is still big: with new deployable and cheaper sensors like FLASH lidar on the one hand, and increasing point density on the other;
  • Obia, obia, obia! We organized a nice series of obia talks, and saw some great presentations on accuracy, lidar+optical fusion, object movements; but thorny issues about segmentation accuracy and object ontology remain; 
  • Public interaction with imagery and data are critical. The Public can be a broader scientific community, or a an informed and engaged community who can presumably use these types of data to support public policy engagement, disaster preparedness and response.
Friday
Mar162012

AAG 2012 Wrap-up 

NY skyline from Tim DeChant's blogAAG was a moderately large conference (just under 9,000) this year, held in mid-town NY. It was a brief trip for me, but I did go to some great talks across RS, GIScience, cartography, and VGI. I also went to a very productive OpenGeoSuite workshop hosted by OpenGeo. Some brief highights from the conference: Muki Hacklay discussed participation inequities in VGI: when you mine geoweb data, you are mining outliers, not society; there are biases in gender, education, age and enthusiasm. Agent-based modeling is still hot, and still improving. I saw some great talks in ABM for understanding land use change. Peter Deadman showed how new markets in a hot crop (like Acai) can transform a region quite quickly. Landsat 8 will likely be launched in early 2013, but further missions are less certain. My talk was in a historical ecology session, and Qinghua Guo and I highlighted some of the new modeled results of historic oak diversity in California using VTM data and Maxent.

Saturday evening I had the great pleasure of being locked in after hours at the NY Public Library for a session on historic maps. David Rumsey, with Humphrey Southall (University of Portsmouth) and Petr Pridal (Moravian Library) led a presentation introducing a new website: oldmapsonline.org. The website's goal is to provide a clearer way to find old maps, and provide them with a stable digital reference. 

Tuesday
Jan172012

Landscape as palimpsest

I am reading a fascinating book this January (xmas gift from the parents) by Jonathan Raban called Driving Home: An American Journey. He is a wonderful writer, and in the introduction he discusses his love of reading, travel and landscapes. He puts all of these into a kind of analytical framework, and discusses how one can observe and consider writing, language, and landscapes as a way to better understand people, context, place and history. Consider this marvelous paragraph:

Trying to understand the habitat in which we live requires an ability to read it - and not just in a loose metaphorical sense. Every inhabited landscape is a palimpsest (this is me now: what an awesome word! see below for definition), its original parchment nearly blackened with the cross-hatching of successive generations of authors, claiming this place as their own and imposing their designs on it, as if their temporary interpretations would stand forever. Later overwriting has obscured all but a few, incompletely erased fragments of the earliest entries on the land, but one can still pick out a phrase here, a word there, and see how the most recently dried layer is already being partially effased with fresh ink.

From wikipedia: A palimpsest is a manuscript page from a scroll or book from which the text has been scraped off and which can be used again. I had not heard of its used as a metaphor for a landscape before, but I like it!

Hajdúböszörmény, Hungary. LandsatYesterday this NASA image post came across my screen as a fitting example of what Raban is talking about. In the  text that accompanies the image, they say "The history of Hajdúböszörmény, Hungary, echoes across its name and over its outline on the land." They go on to discuss the derivation of its name, which echoes past conflicts and local economy, and show how its history is written on the land, in layers of land use. 

"The city is round, a shape easily defended on the flat North Pannonian Plain in northeastern Hungary. The livestock-based economy may also play a role in the shape of the city. The center is densely built, a concentrated ellipse of tan and white. Surrounding the center is a slightly less dense circle, marked by diagonal roads, which held stockyards and gardens. Even today, tiny spots of green indicate that this area contains more open garden space than the city center."

Hooray for geography, landscape history and remote sensing. All fascinating subjects to study. And, I recently found this blogpost from Tim DeChant, former grad student and honorary geographer, in which he describes "ghosts of geography".

Thursday
Nov172011

Wetland restoration reduces sea level rise impacts over next 100 years in the SF Bay

sun setting on bay marshA new study led by Diana Stralberg at PRBO Conservation Science and including work done by our own Lisa Schile, projects a bleak future for San Francisco Bay’s tidal marshes under high-end sea-level rise scenarios that are increasingly likely. PRBO and colleagues found that in the worst case scenario 93% of San Francisco Bay's tidal marsh could be lost in the next 50-100 years (with 5.4 feet or 1.65 meters of sea-level rise, low sediment availability and no significant restoration). Not all marshes will be lost and restoration currently underway can keep more marshes intact as sea levels rise.

"Tidal marshes are incredibly resilient to changes in sea level, depending on how fast seas rise and how much sediment is available.  Unfortunately, marshes cannot keep up with the high-end sea-level rise predictions on their own.  They will need our help.” said Diana Stralberg, the study lead author of PRBO and the University of Alberta.

Our study was published this week in the high-impact journal PLoS ONE. To view maps of where the marshes will be under various scenarios over the next 100 years, visit www.prbo.org/sfbayslr. News coverage from SF Chronicle here. CNR coverage here.