{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,16]],"date-time":"2026-01-16T19:51:35Z","timestamp":1768593095995,"version":"3.49.0"},"reference-count":61,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2016,11,21]],"date-time":"2016-11-21T00:00:00Z","timestamp":1479686400000},"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>Light availability in lakes or reservoirs is affected by optically active components (OACs) in the water. Light plays a key role in the distribution of phytoplankton and hydrophytes, thus, is a good indicator of the trophic state of an aquatic system. Diffuse attenuation of photosynthetic active radiation (PAR) (Kd(PAR)) is commonly used to quantitatively assess the light availability. The PAR and the concentration of OACs were measured at 206 sites, which covered 26 lakes and reservoirs in Northeast China. The spatial distribution of Kd(PAR) was depicted and its association with the OACs was assessed by grey incidences(GIs) and linear regression analysis. Kd(PAR) varied from 0.45 to 15.04 m\u22121. This investigation revealed that reservoirs in the east part of Northeast China were clear with small Kd(PAR) values, while lakes located in plain areas, where the source of total suspended matter (TSM) varied, displayed high Kd(PAR) values. The GIs and linear regression analysis indicated that the TSM was the dominant factor in determining Kd(PAR) values and best correlated with Kd(PAR) (R2 = 0.906, RMSE = 0.709). Most importantly, we have demonstrated that the TSM concentration is a reliable measurement for the estimation of the Kd(PAR) as 74% of the data produced a relative error (RE) of less than 0.4 in a leave-one-out cross validation (LOO-CV) analysis. Spatial transferability assessment of the model also revealed that TSM performed well as a determining factor of the Kd(PAR) for the majority of the lakes. However, a few exceptions were identified where the optically regulating dominant factors were chlorophyll-a (Chl-a) and\/or the chromophroic dissolved organic matter (CDOM). These extreme cases represent lakes with exceptionally clear waters.<\/jats:p>","DOI":"10.3390\/rs8110964","type":"journal-article","created":{"date-parts":[[2016,11,21]],"date-time":"2016-11-21T11:16:05Z","timestamp":1479726965000},"page":"964","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Spatial Distribution of Diffuse Attenuation of Photosynthetic Active Radiation and Its Main Regulating Factors in Inland Waters of Northeast China"],"prefix":"10.3390","volume":"8","author":[{"given":"Jianhang","family":"Ma","sequence":"first","affiliation":[{"name":"Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences (CAS), Changchun 130102, China"},{"name":"University of Chinese Academy of Sciences, Beijing 100049, China"}]},{"given":"Kaishan","family":"Song","sequence":"additional","affiliation":[{"name":"Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences (CAS), Changchun 130102, China"}]},{"given":"Zhidan","family":"Wen","sequence":"additional","affiliation":[{"name":"Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences (CAS), Changchun 130102, China"}]},{"given":"Ying","family":"Zhao","sequence":"additional","affiliation":[{"name":"Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences (CAS), Changchun 130102, China"},{"name":"University of Chinese Academy of Sciences, Beijing 100049, China"}]},{"given":"Yingxin","family":"Shang","sequence":"additional","affiliation":[{"name":"Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences (CAS), Changchun 130102, China"},{"name":"University of Chinese Academy of Sciences, Beijing 100049, China"}]},{"given":"Chong","family":"Fang","sequence":"additional","affiliation":[{"name":"Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences (CAS), Changchun 130102, China"},{"name":"University of Chinese Academy of Sciences, Beijing 100049, China"}]},{"given":"Jia","family":"Du","sequence":"additional","affiliation":[{"name":"Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences (CAS), Changchun 130102, China"}]}],"member":"1968","published-online":{"date-parts":[[2016,11,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"251","DOI":"10.1016\/j.ecss.2004.05.004","article-title":"Diffuse attenuation coefficients Kd(PAR) at the estuarine North Sea-Baltic Sea transition: Time-series, partitioning, absorption, and scattering","volume":"61","year":"2004","journal-title":"Estuar. 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