荒漠

The formation-types are first rearranged into four major biochores-forest, savanna, grassland , and desert.

首先把群系型重新排列成四个主要的生态——森林、稀树草原、草地和荒。

Dipus sagitta showed a high density and was dominant in desert-type habitats, especially in sand dune.

聚类析结果显示, 研究啮齿动物群落可以成荒型群落和绿洲型群落两大类。

In this area ,the ecological environment is veryrigorous for living things,and aridness and wind and sarid are main threats.

塔克拉玛干沙旱荒地，生态环境酷，干旱和风沙为害是最主要的生态环境问题。

It was obvious that soil salt accumulated in deep soil of farmland and soil salt accumulated in surface horizon of uncropped soil.

荒绿洲边缘的演变以环境梯度变化为主要驱动力。

The north of zhungeer is the main district of Central Asia desert mammal population and the mammal in Altai is north subfrigid zone coniferous forest pattern.

摘要准噶尔盆地北沿与阿尔泰山地的兽类,山以北方针叶林型动物群为主,平原以中亚荒型动物群居多,广布种掺杂其间。

Abstract : In dry area or sandy dryland, for the reason of scarce rainfall, windiness and lack of labor power and material resources, the low survivor ratio of afforestation were common.

摘要 ： 在干旱或荒地造林，降雨稀少，风多且风大，加之人力、物力的贫乏等原因，导致造林成活率低。