頂極土壤 的英文怎麼說
中文拼音 [dǐngjítǔrǎng]
頂極土壤
英文
climax soil-
Main results are summarized as follows. ( 1 ) the content of soil organic c in 0 - 25cm soil layer increases significantly in the course of vegetation succession from abandoned land to liaotungesis forest community. but the content of soil organic c in > 25cm layer does n ' t change obviously ( 3 ~ 4g kg - 1 )
主要結果如下： （ 1 ）從棄耕地到頂極群落（遼東櫟群落）的正向演替過程中， 0 25cm土層的土壤有機碳含量顯著增加，但25cm以下土層有機碳含量基本一致（ 3 4gkg ~ （ - 1 ） ） 。Gradually, with the more and more transpiration of the vegetation, and with the reduction of the deep soil moisture, in the end, a kind of balance of soil moisture will appeared and be kept for ever between the precipitation and the transpiration of vegetation, and the manual sand - fixing vegetation will be transformed consequently into its natural climax stage completely, in which the dominant plant is leymus secalimus, and in which the plant species richness is not too low, but the plant species evenness is the lowest
設置機械沙障和生物沙障的初期，植物的物種豐富度、物種均勻度會有一個暫時的提高；但是在人工固沙植被的發育盛期，物種豐富度會降低；隨植物群落蒸騰耗水量的不斷增大，人工植被不斷地衰退，最後發展到賴草土壤頂極群落，此時的物種豐富度並不低，但是物種均勻度很低。
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