Seagrass distribution changes in Swan Lake of Shandong Peninsula from 1979 to 2009 inferred from satellite remote sensing data
Journal Title: Satellite Oceanography and Meteorology - Year 2018, Vol 3, Issue 1
Abstract
Seagrass and associated bio-resources are very important for swan’s overwintering in Swan Lake in Rongcheng of Shandong Peninsula of China. The seagrass distribution changes, which are usually affected by the regional human activities, can indirectly affect swan’s habitat. In this study the satellite remote sensing data in years 1979–2009 together with in-situ observations in recent years were used to examine the seagrass distribution changes in Swan Lake. The band ratio of band 1 to band 2, Lyzenga’s methods and band synthesize of band 1, band 2 and band 3 were used for seagrass retrieval. The band ratio of band 1 to band 2 with ranges greater than 4.5 was used for estimating the seagrass coverage greater than 50%. Results showed that in years 1979–1990 seagrass coverage greater than 50% occupied more than half of the surface area of Swan Lake. In years 2000–2005, the total area with seagrass distributions reduced greatly, only about one sixth to one fourth of Swan Lake’s surface area. After 2005, the seagrass area in Swan Lake increased gradually and occasionally was greater than one third of the total surface area of the Lake. It was shown that human activities such as the dam and fish pond establishment and the awareness of seagrass importance and protected actively result in the seagrass distributions changes in Swan Lake which decreased first and then increased afterwards.
Authors and Affiliations
Dingtian Yang, Xiaoqing Yin, Lizhu Zhou
Keywords
Related Articles
- EP ID EP678924
- DOI -
- Views 214
- Downloads 0
Relationship between extensive and persistent extreme cold events in China and stratospheric circulation anomalies
This study examines the relationship between the extensive and persistent extreme cold events (EPECEs) in China and geopotential height anomalies in the stratosphere using daily mean fields of outgoing long wave radiatio...
Impacts of model resolution on simulation of mesoscale eddies in the Northeast Pacific Ocean
The model simulated meso-scale eddies in the Northeast Pacific Ocean, using two models with nominal horizontal resolutions of 1/12° and 1/36° in latitude/longitude (grid spacing of 7.5 km and 2.5 km), respectively, are p...
Climate of early Martian surface and loss of water – A review
Mars is one of the interesting planets for geoscientists to explore the presence of water on the surface of terrestrial planets. The age, geology and geomorphic processes of Mars are almost similar to Earth surface proce...
Role of barrier layer in the developing phase of “Category 6” super typhoon Haiyan
With the remarkable intensity of 170 knots, Typhoon Haiyan started as a tropical depression on November 3 and developed to the peak as super tropical cyclone (TC) on November 7 in 2013. This intensity makes Haiyan one of...
Response of the tropical Pacific Ocean to wind changes related to global warming from simulations with an ocean general circulation model
A suite of numerical experiments is implemented with an ocean general circulation model (OGCM) to examine the roles of wind stress and wind speed for oceanic changes in the tropical Pacific under global warming. In parti...