Species of wildlife, amount and its reproduction environment and habitat condition.
野生动物种类、数量及其生育环境与栖息环境之现况。
The paper discussed the habitat condition, grassland production ability, current production situation and existing problems of arid grassland in Loess Plateau of east Gansu Province.
论述了陇东黄土高原沟壑区干旱草地的生境条件，草地生产能力、生产现状及存在的问题。
The biological and ecological characteristics as well as habitat condition of Picea sitchensis have been briefed; meanwhile the study direction of its species introduction has been advanced.
简要介绍了西加云杉的生物生态学特性及其生境条件，并提出了该树种引种的研究方向。
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