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<!doctype html>
<html class="no-js" lang="">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Green Infrastructure Vision Tour</title>
<meta name="description" content="GIV Viz">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="apple-touch-icon" href="apple-touch-icon.png">
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.7.3/leaflet.css" />
<script src="http://cdn.leafletjs.com/leaflet-0.7.3/leaflet.js"></script>
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<p class="browserupgrade">You are using an <strong>outdated</strong> browser. Please <a href="http://browsehappy.com/">upgrade your browser</a> to improve your experience.</p>
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<header>
<h1><a href="index.html" alt="home">Green Infrastructure Vision</a></h1>
<a id="nav-toggle" class="hidden" href="#"><span></span></a>
<nav class="primary-nav">
<ul>
<li><a href="explore/index.html" alt="explore">Explore</a></li>
<li><a href="about/index.html">About</a></li>
<li><a href="giv-data/index.html">Data</a></li>
<li><a href="contact/index.html">Contact</a></li>
</ul>
</nav>
</header>
<div id="page-container" class="clearfix full-width">
<div class="top-banner">
<img src="img/0165574c.jpg" alt="prairie grasses banner">
<h2 id="what-is-the-green-infrastructure-vision"><a name="user-content-what-is-the-green-infrastructure-vision" href="#what-is-the-green-infrastructure-vision" class="headeranchor-link" aria-hidden="true"><span class="headeranchor"></span></a>What is the Green Infrastructure Vision?</h2>
</div>
<div class="section-a">
<div class="content-container">
<p>The Green Infrastructure Vision (GIV) is a <strong>geospatial dataset</strong> created help describe, characterize and quantify the ecosystem resources of the <a href="#">Chicago Wilderness Region</a>. The GIV unifies a lot of similar but disparate efforts into a single, standardized dataset by:</p>
<ul>
<li>Building upon standard data sources, regardless of their place in the region. This will be described in greater detail later.</li>
<li>Using agreed-upon scientific methods to aggregate each individual dataset into the final, master dataset.</li>
</ul>
<p>Read on to learn more about the GIV and how it was created or click on the buttons below to explore the data.</p>
<div class='button-container'>
<span class="woodland btn"><a href="explore/index.html#woodland">Forest</a></span>
<span class="prairie btn"><a href="explore/index.html#prairie">Prairie</a></span>
<span class="wetland btn"><a href="explore/index.html#wetland">Wetland</a></span>
<span class="stream btn"><a href="explore/index.html#stream">Stream</a></span>
<span class="econet btn"><a href="explore/index.html#econet">Network</a></span>
</div>
</div>
</div>
<div class="section-b">
<div class="content-container">
<h2 id="what-is-the-giv-used-for"><a name="user-content-what-is-the-giv-used-for" href="#what-is-the-giv-used-for" class="headeranchor-link" aria-hidden="true"><span class="headeranchor"></span></a>What is the GIV used for?</h2>
<h3 id="local-planning"><a name="user-content-local-planning" href="#local-planning" class="headeranchor-link" aria-hidden="true"><span class="headeranchor"></span></a>Local planning</h3>
<p>Right now, GIV data is being used all over the Chicago Wilderness region for planning efforts under Chicago Wilderness’ <a href="http://www.chicagowilderness.org/what-we-do/protecting-green-infrastructure/">Sustainable Watershed Action Team</a>, or SWAT, program. SWAT is designed to help local land managers and policy-makers make better informed decisions about their green infrastructure resources, and GIV data is often a central component. It is especially helpful for understanding existing resources, making connections between pieces of high-quality land, and identifying sites for expanding green infrastructure resources. To read about one such effort in Michigan City, Indiana, <a href="#" alt="placeholder">go here</a>.</p>
<h3 id="measuring-the-value-of-our-ecosystems"><a name="user-content-measuring-the-value-of-our-ecosystems" href="#measuring-the-value-of-our-ecosystems" class="headeranchor-link" aria-hidden="true"><span class="headeranchor"></span></a>Measuring the value of our ecosystems</h3>
<p>In 2014, the Chicago Metropolitan Agency for Planning (CMAP) completed a study that used the complete GIV dataset to determine the economic value of the ecosystems in our region. Following in the spirit of the GIV dataset from which it was derived, this economic data will also be available as a single, standardized regional dataset. </p>
</div>
</div>
<div class="section-a">
<div class="content-container">
<h2 id="what-is-green-infrastructure"><a name="user-content-what-is-green-infrastructure" href="#what-is-green-infrastructure" class="headeranchor-link" aria-hidden="true"><span class="headeranchor"></span></a>What is green infrastructure?</h2>
<p>In recent years, the term “green infrastructure” has come to have multiple meanings, depending on the context. When Chicago Wilderness completed their first GIV assessment in 2004, they viewed green infrastructure as a network of connected ecosystems, together providing more value than any component could provide in isolation. Since then, the term is largely understood to refer to a site-scale, natural <a href="#">hydrologic</a> feature designed to manage <a href="#">storm water</a> while providing environmental and community benefits. CMAP provides a balanced definition on their <a href="http://www.cmap.illinois.gov/livability/open-space/green-infrastructure-vision">green infrastructure page</a>: </p>
<blockquote>
<p>Site-scale green infrastructure can be thought of as a suite of practices to handle stormwater that emphasize using vegetation, soils, and natural processes to mimic natural hydrology. Regional green infrastructure, on the other hand, is a planned landscape of connected open spaces that conserves ecosystem functions and provides associated benefits to human populations. </p>
<p>Both can be thought of as critical complements and sometimes replacements for “gray infrastructure,” like utilities and the road and rail networks. The concept of green infrastructure draws attention to its similarity to the other infrastructure networks that undergird prosperity in the region. Like other forms of infrastructure, it also needs to be managed, restored, and expanded.</p>
</blockquote>
</div>
</div>
<div class="section-b">
<div class="content-container">
<h2 id="how-was-the-giv-created"><a name="user-content-how-was-the-giv-created" href="#how-was-the-giv-created" class="headeranchor-link" aria-hidden="true"><span class="headeranchor"></span></a>How was the GIV created?</h2>
<p>The GIV dataset is built up from many different datasets, so it is tempting to think of it simply as the sum of its parts. However, the final dataset is actually the result of a <strong>modeling methodology</strong> created by <a href="#">The Conservation Fund</a> in collaboration with the Chicago Wilderness Green Infrastructure Vision Task Force. Full documentation for this methodology is available as part of the <a href="http://www.cmap.illinois.gov/documents/10180/11696/GIV20_FinalReport_2012-06.pdf/dd437709-214c-45d6-a036-5d77244dcedb">GIV2.0 Final Report</a> (2012). The following describes that process in simple terms.</p>
<h3 id="define-landscapes"><a name="user-content-define-landscapes" href="#define-landscapes" class="headeranchor-link" aria-hidden="true"><span class="headeranchor"></span></a>Define Landscapes</h3>
<p>The GIV methodology starts by defining <em>landscapes</em>, the primary organizing principle of the entire GIV. </p>
<blockquote>
<p>Landscapes are a mosaic of<br />
ecosystems or land uses that possess common attributes that are repeated across a large area<br />
(Forman & Godron, 1986)</p>
</blockquote>
<p>Landscapes are determined through a combination of a literature review, review of available data, and a stakeholder feedback process. </p>
<ul>
<li>There are four broad landscape categories in the GIV:
<ul>
<li>Woodlands / Forests</li>
<li>Prairies / Grasslands / Savannas</li>
<li>Wetlands</li>
<li>Streams and lakes</li>
</ul>
</li>
</ul>
<h3 id="determine-functional-connectivity-between-and-among-landscape-types"><a name="user-content-determine-functional-connectivity-between-and-among-landscape-types" href="#determine-functional-connectivity-between-and-among-landscape-types" class="headeranchor-link" aria-hidden="true"><span class="headeranchor"></span></a>Determine <strong>functional connectivity</strong> between and among landscape types</h3>
<p>The scientific community is generally in agreement that a <em>system of interconnected habitats</em> is more likely to sustain its natural ecological communities than one that is fractured and isolated from other habitats. In the field of landscape ecology, there are two primary types of connectivity: <em>structural connectivity</em>, which refers to the physical characteristics of landscape, and <em>functional connectivity</em>, which refers to the landscape’s capacity to support movement of organisms and processes. The GIV is focused primarily on <em>functional connectivity</em>. </p>
<p>Functional connectivity was determined using a GIS model called “FunConn,” developed by scientists at Colorado State University. The model works by moving theoretical organisms (represented by mathematical models) across the the landscape (represented in GIS by each landscape’s component data). Each landscape type is home to a different mix of species and, thus, had to be assessed using a unique combination of representative species. </p>
</div>
</div>
<div class="section-a">
<div class="content-container">
<h2 id="the-data"><a name="user-content-the-data" href="#the-data" class="headeranchor-link" aria-hidden="true"><span class="headeranchor"></span></a>The data</h2>
<p>Head to the <a href="giv-data/index.html">Data page</a> for a full rundown of the data used in the GIV.</p>
</div>
</div>
</div>
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