Vegetation study and groundwater sampling

Tuesday, October 24, the temperature was particularly low, snowed, but we still continue our field work, we have to complete the task8 and task7 at that day.

The task 8: Vegetation study

The aim of the exercise is to find out what kind of aquatic plants and describe the condition of the water from the Lake Pieni-Valkeinen. So we  walked along the edge of Lake Pieni-Valkeinen, and started our work.

Figure1

The figure show our first spot, as you can see, there are a lot of reeds(latin name Phragmites australias Trin), and it's almost everywhere on the edge of the lake.

Figure2

Figure2 show that there are many duckweed floating in the water, but it look not very good, and the next image we found from in the internet. Duckweed (Lemna minor), also known as: Green Ping, Tian Ping, duckweed grass, water duckweed, water Ping grass, are duckweed Branch surface floating plants. It likes warm climate and humid environment instead of cold weather. Therefore as the pic showed that there was just a small area of duckweed.

Figure3

Looking at figure3 above, perhaps the first thing you notice is the green plants, which are called mosses, and it looks good, even winter.

Figure4

The figure4 is Scallop which ferns are water keel scales. Rhizome short, erect, foliage at the top, radially, usually squatted in size, different shapes brown to black scales. Leaves are more back to the feathers. Sporangia group are of small veins, with rounded kidney capsule covering .

Figure5

The figure5 is Aquatic, Latin name Fimbristylis milliacea (L) Vahl. Generally refers to the herb can grow in the water. Aquatic plants are plant groups that are physiologically attached to the water environment and at least part of the reproductive cycle that occurs in water or water.

Figure 6

The figure 6 is Purslane (scientific name: Portulaca oleracea L.) annual herb, whole plant glabrous. Stems supine, volts scattered scattered, pale green or dark red. Leaves alternate, leaf blade flat, hypertrophy, resembling serrulate, dark green above, pale green or dark red; petiole short. Flowering from May to August, fruit from June to September. Sex fertile soil, drought is also waterlogging, strong vitality, was born in the garden, farmland, roadside, common for the field weeds. All the grass for medicinal use, there are heat and dampness, detoxification swelling, anti-inflammatory, thirst, diuretic effect; seeds eyesight; also for veterinary drugs and pesticides; tender stems and leaves can be used for vegetables, taste acid, is also a good feed.

Task7: groundwater sampling

After we finished the task 8, we started our task7, in this task, we have a very reliable and beautiful Finnish girl, she helped us to complete our work. First check the surroundings of groundwater monitoring well, everything is okay. Then we measured groundwater level, and the result is 2.47meters, thus we can calculate the water volume

Height of waterspout=Top of the well- Measured groundwater level –bottom of the well=102.36-2.47-91.45=8.44m

V=π =11.14l

Then, we detect groundwater quality we measured pH, conductivity, temperature and dissolved oxygen:

pH=6.92, 5.8℃，       conductivity=139.4us/cm, 5.7℃

dissolved oxygen=5.56mg/L, 5.8℃，

The fallowing we took the water samples, we got our first sample after we took three times, and mark notes, such as group name, time, and so on.

The next we used pumps to pump water out of the ground, During the drain pumping, we calculate how long it takes for the water to come out of the pump to fill a liter container, we do 3 times, and the average is 14.33s

The pumping rate= l/min

Time=

We continue pumping about 15minutes and wait 15minuts and let the water clear, and take a sample again, we will analyze the sample in laboratory.