Data Release for Analysis of Vegetation Recovery Surrounding a Restored Wetland using the Normalized Difference Infrared Index
(NDII) and Normalized Difference Vegetation Index (NDVI)
Dataset Identification:
Resource Abstract:
<p>This dataset contains data used in the associated publication in the International Journal of Remote Sensing. The geodatabase
contains four feature classes: AOI, MajorZone, MinorZone, and Green2007.<br> <br> Publication can be found at <a href="https://doi.org/10.1080/01431161.2018.1437297"
style="box-sizing: border-box; color: rgb(16, 20, 126); text-decoration-line: none; margin: 0px 0.25em 0px 0px; word-break:
break-all;">https://doi.org/10.1080/01431161.2018.1437297</a>.</p> <p>Publication abstract: Watershed restoration efforts
seek to rejuvenate vegetation, biological diversity, and land productivity at Cienega San Bernardino, an important wetland
in southeastern Arizona and northern Sonora, Mexico. Rock detention and earthen berm structures were built on the Cienega
San Bernardino over the course of four decades, beginning in 1984 and continuing to the present. Previous research findings
show that restoration supports and even increases vegetation health despite ongoing drought conditions in this arid watershed.
However, the extent of restoration impacts is still unknown despite qualitative observations of improvement in surrounding
vegetation amount and vigor. We analyzed spatial and temporal trends in vegetation greenness and soil moisture by applying
the normalized difference vegetation index (NDVI) and normalized difference infrared index (NDII) to one dry summer season
Landsat path/row from 1984 to 2016. The study area was divided into zones and spectral data for each zone was analyzed and
compared with precipitation record using statistical measures including linear regression, Mann Kendall test, and linear correlation.
NDVI and NDII performed differently due to the presence of continued grazing and the effects of grazing on canopy cover; NDVI
was better able to track changes in vegetation in areas without grazing while NDII was better at tracking changes in areas
with continued grazing. Restoration impacts display higher greenness and vegetation water content levels, greater increases
in greenness and water content through time, and a decoupling of vegetation greenness and water content from spring precipitation
when compared to control sites in nearby tributary and upland areas. Our results confirm the potential of erosion control
structures to affect areas up to 5 km downstream of restoration sites over time and to affect 1 km upstream of the sites.</p>
Citation
Title Data Release for Analysis of Vegetation Recovery Surrounding a Restored Wetland using the Normalized Difference Infrared Index
(NDII) and Normalized Difference Vegetation Index (NDVI)
other Citation Details
Cinergi keyword enhanced.File generated at Wed Dec 05 04:20:11 UTC 2018
purpose:
The purpose of this dataset is to provide access to data used in the analyses for the associated publication. Data provided
either demonstrates the analysis used in the publication or the data is derived from information that is not otherwise publicly
available. This dataset is provided to increase reproducibility of analyses.