{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,19]],"date-time":"2025-12-19T14:42:27Z","timestamp":1766155347418,"version":"build-2065373602"},"reference-count":60,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2016,2,16]],"date-time":"2016-02-16T00:00:00Z","timestamp":1455580800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Stellera chamaejasme L. (S. chamaejasme) is one of the primary toxic grass species (poisonous plants) distributed in the alpine meadows of Qinghai Province, China. In this study, according to the distinctive phenological characteristics of S. chamaejasme, the spectral differences between S. chamaejasme in the full-bloom stage and other pasture grasses were analyzed and the red, blue, and near-infrared bands of IKONOS image were determined as the diagnostic bands of S. chamaejasme recognition. Feature indexes related to S. chamaejasme were established using the diagnostic bands, and \\(NDVI_{blue} = (\\rho_{nir} \u2212 \\rho_{blue})\/(\\rho_{nir} +                                                    \\rho_{blue})\\) obtained as S. chamaejasme sensitive index based on the linear regression analysis between the indexes derived from field spectra and the actual cover fraction of S. chamaejasme communities. The distribution area of S. chamaejasme was extracted by using the index \\(NDVI_{blue}\\) derived from IKONOS multispectral image in Qilian County of Qinghai Province, China and the verified result reached an overall accuracy of 90.71%. The study indicated that high resolution multispectral satellite images (such as IKONOS images) had significant potential in remote sensing recognition of toxic grass species.<\/jats:p>","DOI":"10.3390\/rs8020148","type":"journal-article","created":{"date-parts":[[2016,2,16]],"date-time":"2016-02-16T10:39:15Z","timestamp":1455619155000},"page":"148","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["IKONOS Image-Based Extraction of the Distribution Area of Stellera chamaejasme L. in Qilian County of Qinghai Province, China"],"prefix":"10.3390","volume":"8","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9831-9260","authenticated-orcid":false,"given":"Jingzhong","family":"Li","sequence":"first","affiliation":[{"name":"College of Urban and Environmental Science, Northwest University, Xi\u2019an 710127, China"},{"name":"College of Urban Planning and Landscape Garden, Xuchang University, Xuchang 461000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yongmei","family":"Liu","sequence":"additional","affiliation":[{"name":"College of Urban and Environmental Science, Northwest University, Xi\u2019an 710127, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chonghui","family":"Mo","sequence":"additional","affiliation":[{"name":"Agriculture and Animal Husbandry College, Qinghai University, Xining 810016, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lei","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Urban and Environmental Science, Northwest University, Xi\u2019an 710127, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guowei","family":"Pang","sequence":"additional","affiliation":[{"name":"College of Urban and Environmental Science, Northwest University, Xi\u2019an 710127, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mingming","family":"Cao","sequence":"additional","affiliation":[{"name":"College of Urban and Environmental Science, Northwest University, Xi\u2019an 710127, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2016,2,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"736","DOI":"10.1046\/j.1365-2486.2002.00512.x","article-title":"Estimating net primary productivity from grassland biomass dynamics measurements","volume":"8","author":"Scurlock","year":"2002","journal-title":"Glob. 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