逆向坡 的英文怎麼說
中文拼音 [nìxiàngpō]
逆向坡
英文
acclivity-
The land resources of karst region in chongqing is mainly rock mountain and slope land, with serious soil erosion, converse vagetation succession and low cover rate, lesser water retention and lacking water, where ecosystem is difficult to recover after vegetation being destructed, land coming forth landification and sandification heavy
市境內石灰巖山地土地資源以石山坡地為主,土壤侵蝕嚴重,發生逆向演替,植被逆向演替,覆蓋率低,保水能力差,乾旱缺水。在石灰巖區,植被破壞后,土地大量石化、砂化,生態環境已很難逆轉。There is qinghai spruce scattered in south slope and southwest slope. qinghai spruce is most anomalistic in patch distribute, is small in mean patch area and is close to each other. so, qinghai spruce is easy to suffer disturbance and converse succession which lead to the function of forest ecosystem degenerate
作為具有重要涵養水源功能的青海雲杉林,大多分佈在海拔2550 - 3000m的陰坡和半陰坡,陽坡有零星分佈,其斑塊形狀最為不規則,平均斑塊面積小而距離近,容易受到各種干擾而造成逆向演替,使森林生態系統發生功能退化,從而影響水源涵養。4 double - welded groove joints shall have their root passes back gouged to sound metal on the reverse side before proceeding with welding on that side
雙面焊接的坡口焊道,應在焊接前將該面底部焊道逆向刨削,直到其對面露出完好的金屬。
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