![]() The change of plant ecological strategy is the result of comprehensive action of biotic factors, topographic factors and soil factors, among which biotic factors play a leading role. The S strategy group are explained by slope and population density, while the first two explanatory factors of intermediate strategy group differences are slope and soil total potassium content. For the C strategy group, population density and canopy openness explain most of the differences. The spectrum of ecological strategy of different communities is significantly different with succession, among which C strategy group is on the rise, S strategy group is on the decline, and the intermediate (INT) group strategy is on the rise after the first decline. We found that the ecological strategy spectrum of communities in the four succession stages differentiated along the C-S axis, but no major communities were found in the R strategy group. Using hectare scale plots, we evaluated woody plant community composition and collected a variety of environmental variables. Your browser does not support the audio element.We aimed to determine the environmental driving factors underpinning successional changes in a tropical lowland rain forest in Hainan. Some good sources of potassium in our diet include bananas, avocados, nuts, chocolate, parsley, and potatoes.It is used in fire extinguishers, baking powders, and antacids. Potassium bicarbonate is the chemical name for baking soda.A higher concentration can taste bitter or salty. A small amount of potassium can taste sweet.The USDA recommends that adults consume 4.7 grams of potassium each day.Potassium chloride (KCl) is sometimes used as a substitute for table salt.The majority (93%) of potassium found in nature is K-39. There are three isotopes of potassium that occur naturally: K-39, 40, and 41. The K symbol for the element comes from the Latin word "kalium", which means potash. Potassium gets its name from the salt potash from which potassium was first isolated. He used electricity to separate the element from the salt potash. Potassium was first isolated by English chemist Sir Humphry Davy in 1807. It is about the eighth most abundant element in the human body by weight. It is used in muscle contraction, fluid and pH balance, bone health, and helps to prevent kidney stones. Potassium also plays a vital role in our bodies. Industrial applications for potassium include soaps, detergents, gold mining, dyes, glass production, gunpowder, and batteries. This is because potassium is important for plant growth. Potassium sulfate (US) or potassium sulphate (UK), also called sulphate of potash (SOP), arcanite, or archaically potash of sulfur, is the inorganic compound with formula K 2 SO 4, a white water- soluble solid. The largest use of potassium is potassium chloride (KCl) which is used to make fertilizers. It can also be found in ocean water where it is also about the eighth most abundant element. Making up about 2.1% of the weight of the Earth's crust, potassium is the eighth most abundant element in the crust. Most minerals that contain potassium are referred to as potash. Instead it is found in various minerals such as sylvite, carnallite, langbeinite, and kainite. It also reacts with many other elements and substances such as oxygen, acids, sulfur, fluorine, and nitrogen.īecause potassium reacts so readily with water, it is not found in its elemental form in nature. It reacts violently when coming into contact with water, producing heat and hydrogen gas. It is so light that it can float in water.Ĭhemically, potassium is a very active metal. Potassium also has a very low density and is the second least dense metal after lithium. When it burns, it produces a pale purple colored flame. A DEXA scan (a bone density X-ray) can help detect bone. Potassium has a very low melting point such that even a candle can cause it to melt. high levels of parathyroid hormone high levels of blood calcium, often with low levels of phosphorus. When cut, the exposed metal tarnishes quickly and forms a dull oxide coating. It is so soft that it can be easily cut with a knife. Under standard conditions potassium is a soft silvery-white metal. Potassium is considered chemically similar to sodium, the alkali metal above it on the periodic table. Potassium atoms have 19 electrons and 19 protons with one valence electron in the outer shell. Potassium is the fourth element in the first column of the periodic table. Discovered by: Sir Humphry Davy in 1807.
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