The paper presents mean values of carbon concentration and mean amounts of dry mass of plant material in the herb and moss layer of phytocoenoses formed under canopy of stands of main forest-forming species of trees in Poland. The parameters were studied for beech, birch, oak, alder, pine...
英语阅读理解题,难受~There are two main types of elephants.There is the Asiatic (亚洲的) elephant,which is found in India,for example,and the African elephant.Superficially they are very alike,but the African elephant is generally larger.One characteristic of Asiatic elephants is that they do no...
There are two main types of elephants.There is the Asiatic (亚洲的) elephant,which is found in India,for example,and the African elephant.Superficially they are very alike,but the African elephant is generally larger.One characteristic of Asiatic elephants is that they do not like being exposed...
Redwood trees are the tallest plants on the earth,reaching heights of up to 100 meters.They are also known for their longevity,typically 500 to 1000 years,but sometimes more than 2000 years.A hundred million years ago,in the age of dinosaurs,redwoods were common in th...
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Since they are immensely strong, they can carry and drag huge objects, such as the trunks of trees, and rocks. This makes them extremely valuable as beasts of burden.Two main types of elephants are1. ___ , and2.___ .The difference between the Asiatic elephant and African elephant is ...
athere are two main types of plants:flowering plants and nonflowering plants .flowering plants have roots ,stems,leaves,flowers and fruits.almost all the trees around us are flowering plants.nonflowering plants include coniferous trees,mosses,liver-worts,algae and fungi.you can not see many 有植...
Results Species composition of the forest and population structure of main tree species. The forest in the study area had a distinct layer system of trees, shrubs, and grasses. The following tree species were identified in the sample plot: such as B. platyphylla, Quercus wutaishanica, Pinus ...
atleastthepluvprecipitationismorethan60mm,andmorethunderstorms;themeantemperatureof25DEGto28DEGC,thelongsummer,notheseasonalvariationrange,generallylessthan3degrees,whiletheaveragedailyrangecanreach6DEGto12DEGC.Undertheclimateofhightemperatureandrainalltheyearround,plantscangrowyearbyyear,withmanykindsoftreesand...
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