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The Department of Natural Resources uses this data to describe the location and intensity of forest disturbance activity on an annual, statewide level. |
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summary:
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The Department of Natural Resources uses this data to describe the location and intensity of forest disturbance activity on an annual, statewide level. |
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accessInformation:
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This data is a result of a cooperative effort between USDA Forest Service, Region 6, Forest Health Protection and the Washington State Department of Natural Resources, Wildfire Division, Forest Health. |
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5000 |
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[] |
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description:
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<DIV STYLE="text-align:Left;"><DIV><P><SPAN>Every summer for approximately the past seventy years, an insect and disease aerial detection survey has been flown of all the forested acres of Washington state (except where noted in the digital data by large 'NF' (not flown) areas). This survey is a cooperative effort between the U.S. Forest Service and the WADNR with two different flight observers each sketching a two mile swath out their side of the plane. The primary mission of the survey is to record recently killed and defoliated groups of trees throughout the state, and to continually build a historical record of these trends. The vast majority of damage found is caused by insect and disease damage agents; however, trees killed by early spring feeding of black bears or by events such as winter storms, fires, floods and landslides are recorded as well. Current defoliation can be detected as soon as the affected foliage changes color that year. However, whole tree mortality is not current since only flagged trees (i.e., trees which have a bright red, orange, or yellow foliage color) are recorded. This means that trees killed the year of the survey will not have changed color yet and so a one year lag time results. Since only this distinctive color or "signature" of the tree can be seen. It is an educated guess as to the causal agent. We therefore use ground surveys to reinforce our estimates as much as possible. Example: When bear damage is spotted while surveying, a polygon is drawn on the map of the size and location of the damage. The polygon is then labeled with the appropriate damage agent (i.e. Bear) and the number of trees affected rounded to the nearest five. No vertical data is recorded.</SPAN></P></DIV></DIV> |
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licenseInfo:
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<DIV STYLE="text-align:Left;"><P><SPAN>This digital data and metadata, (hereinafter collectively referred to as the "information" are provided on an "AS IS"; "AS AVAILABLE"; and "WITH ALL FAULTS" basis. Neither Department of Natural Resources nor any of its officials and employees makes any warranty of any kind for this information, express or implied, including but not limited to any warranties of merchantability or fitness for a particular purpose, nor shall the distribution of this information constitute any warranty. The information is collected from various sources and will change over time without notice. DNR and its officials and employees assume no responsibility or legal liability for the accuracy, completeness, reliability, timeliness, or usefulness of any of the information provided nor do they represent that the use of any of the information will not infringe privately owned rights. The information is not intended to constitute advice nor is it to be used as a substitute for specific advice from a licensed professional. You should not act (or refrain from acting) based upon the information without independently verifying the information and, as necessary, obtaining professional advice regarding your particular facts and circumstances. References to any specific commercial product, process, and service by trade name, trademark, or manufacturer do not constitute or imply endorsement, recommendation, or favoring by DNR and its officials and employees. IN NO EVENT WILL DNR BE LIABLE TO YOU OR ANY THIRD PARTY FOR ANY DAMAGES ARISING OUT OF THE USE OF OR INABILITY TO USE THE DIGITAL DATA, EVEN IF DNR IS ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.</SPAN></P></DIV> |
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title:
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WA_Forest_Health_Aerial_Survey |
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type:
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url:
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tags:
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["WA","Washington","DNR","Department of Natural Resources","insects","disease","forest","Pacific Northwest","aerial survey","forest disturbance","Washington State","Biota","forest health","insect damage","forest insects","bugs","disease"] |
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en-US |
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minScale:
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50000 |
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