查询词典 xerophytes

The decrease of precipitation has the problem of wetland loses and xerophytes invasion even worse.

因为连年降雨的减少导致了北京市湿地面积的下降和旱生植物的入侵问题日益加重。

The physio-ecological characteristics of photosynthesis of the two extreme xerophytes were studied under natural environment.

在自然条件下研究了两种超旱生植物的光合生理生态日变化特征。

The guard cells were covered with heavy cuticle and sunken stomata, which were the typical characteristics of xerophytes.

麻黄属植物气孔的类型及特征比较固定和保守，气孔的大小、形状仅在种内有变异，种间差异较小，分种的价值不大，但在植物分类上具有重要的鉴定价值。

The annual and biennial herbs and xerophytes were dominant in every degraded stage of grassland, and played important roles in maintaining stability and ecological function of the community.

在退化的各个阶段，一、二年生和旱生植物在各个阶段始终保持着较高的优势地位，对群落生态功能的发挥和维持起着重要作用。

A preliminary study of xeromorphism of some important xerophytes growing in Tungeli Desert.

腾格里沙漠主要旱生植物旱性结构的初步研究。

The major factors that impact the species composition in communities were: xerophytes invasion, the intensity of human activities and the water resources status of the wetland.

决定湿地群落中植物组成的主要因素是：旱生植物入侵、人为活动的干扰强度和湿地的水资源状况。

In some xerophytes, such as cacti, most of the leaves are modified into spines, greatly reducing the leaf area for transpiration; the photosynthetic function of the leaves is taken over by the green stems.

在一些旱生植物中，如仙人掌，大部分的叶片都特化为刺，极大的减少了叶片区域的蒸发作用，同时光合作用为绿色的茎所承担。

Xerophytes ; leaf structure ; ecological adaptation ; diversity

旱生植物；叶结构；生态适应；多样性

Anatomical observations of assimilating branches of nine xerophytes in Gansu.

标题 我国甘肃九种旱生植物同化枝的解剖观察。

Anatomical observations of assimilating branches of nine xerophytes in Gansu.

Title 我国甘肃九种旱生植物同化枝的解剖观察。

Cable dampener cannot be rolled up but must be hung over the cable.

缆帆不能被卷起，必须保证处于展开状态

"This skylark is a present from my master," he says.

"这只云雀是我主人献上的礼物。"他说。