Xxx chornesky

In this paper, Landsat TM data were used to detect the changes of Phragmites distribution.

In the experiment, we analyzed the variation of Phragmites area from 2001 to 2010, and the result showed that its distribution areas increased from 5156 acres to 6817 acres during this period, which illustrated that the invasion of Phragmites remains a serious problem for the protection of biodiversity.

Training samples for 2001, 2005, and 2010 were constructed based on NAIP, DOQQ high-resolution imagery and ground-truth data; for 2002–20–2009, because of the shortage of training samples, the IIAA was employed to supply additional training samples.

This method included three steps: first, the NDVI image for each year (2002–2004, 2006–2009) was calculated with Landsat TM images; secondly, rough patches of the land-cover were acquired by density slicing using suitable thresholds; thirdly, a GIS overlay analysis method was used to acquire the Phragmites information in common throughout the ten years and to obtain training patches.

Phragmites is an invasive species of particular concern in the wetlands of the North American Great Lakes [1,2].

It is a cosmopolitan species of wetland grass native to every continent except Antarctica [3].

Leave a Reply

  1. dating a federal agent 03-Aug-2020 04:30

    Why do they only grow worse with the passing of time?

  2. Free lankan sex video chat 03-Aug-2020 05:08

    Also they may be confirmed be a many-to-many or one-to-many chat room.

  3. Adult live chat chubby 29-Dec-2019 00:45

    John has traveled the world, sharing the Gospel of the Kingdom in his unique and uncompromising way.

  4. Home swx webcam 21-Jun-2020 13:01

    In this article, we will only list otome games that are licensed in English.