查询词典 vegetation

They also showed that large Cladocera size is more important than their number for efficient phytoplankton control and when cladocerans are large enough, they can considerably restrain phytoplankton growth, including bloom-forming cyanobacteria, even when submerged vegetation is not restored.

同样，它们也显示了大型枝角类的体型相对于它们的数量就对浮游植物的有效控制上意义更大。当枝角类足够大时，它们能够限制浮游植物的生长，包括蓝藻的爆发，即便当沉水植被没有及时恢复。

Supervised and unsupervised image classification were applied to the study area TM image and t o the paddy field TM image. And the early rice areas were calculated by each met hod. Using the proposed methodology improved the quantitative accuracy of ear ly rice area estimated up to 93.98%, whereas it was 82.83%when image classific ation was used only. The extracted information from the c lassification is belonging to the early rice and not to any other vegetation. Si nce the GIS database is available, the method is easily applicable to any new RS images.

不同方法比较结果表明：非监督分类法不能用于提取丘陵山区的水稻种植面积；只用TM资料估算龙游县早稻面积，与统计数据相比，平行六面体分类法、最大似然分类法精度分别达到82.83%和59.95%；而用GIS 与TM资料集成技术对水田分布图进行分类估算早稻面积，平行六面体分类法、最大似然分类法的估算精度分别达到93.98%和60.65%，所以利用平行六面体分类法对南方丘陵山地早稻种植面积估算是可行的。

The geographical environment elements to form weather disasters in yunnan include low latitude plateau,approaching tropical oceans,complicated topographical features,cliffy mountain,few vegetation,concentrated rainfall,complicated geological structure and strong fault actions.

由于云南复杂的低纬高原地理环境，多样的局地气候背景，特殊的地貌植被状况以及同时受东亚、南亚两支季风的共同作用，形成了鲜明的区域气象灾害特征[1，2]。1 云南气象灾害的特征1.1 种类多、频率高、重叠交错云南自然地理环境特殊，7种气候带交错分布，气候资源丰富，立体气候明显，地域差异大。

How to collocate , let vegetation protect slope off limits , is the new problem in the actual project .

如何布置，使植被更大限度地发挥&固滩护堤&的作用，是生产实际中提出的新问题。

The results of separating distance among the woodland, cultivated crops and seasonal green vegetation are not exactly. The phenomenon of confusional classification is in evidence. The woodland, cultivated crops and brush need further classification.

在分类结果中，水体的分离效果最好，与其他覆被之间的Bhattacharya距离达到2.00，分类精度在90%以上，疏林地，农地，灌丛的分离效果不理想，混分现象明显，需进一步分类。

And there are not the existance of seedlings in coppiced shrub of Quercus liaotungensis. So, the shrub type remained two coppiced shoots is the best to recovery the forest vegetation, improve ecological-serve function immediately.

调查过程中没有发现实生苗的存在。2克隆株/丛类型在恢复当地的森林植被、迅速改善区域生态服务功能方面是最好的调控措施。

Firstly, it concludes the slope Biotechnique, analyzes its specialties and applied situation, put forwards a method that choosing the slope Biotechnique mode from texture gradient the slope corrade expense and so on; Secondly, it investigates that technology of vegetation construction from the selecting seed and the helping grow, put forwards a method that selecting the seed.

首先，将山区公路边坡生态防护方式进行了归纳，分析了主要方式的特点和适用范围，提出从质地、坡度、坡面侵蚀情况、费用等方面进行方式的选择；然后，从物种选择、植物助长方面对植被建植技术进行了研究，提出了简易可行的五步选种方法；接着，分别以黄土地区山区、秦岭山区的边坡生态防护为实例进行了说明；最后，从景观的角度探讨了山区公路边坡生态防护的协调，提出了协调原则和具体要求。

Of vegetation crisped on land.

相比较于人类的肮脏，那将是

The results showed that the spatial characteristic of spectra on the opencast coal mine varied with land type area distribution, and landscape pattern. The first and second principal components of the TM images had obvious spatial characteristic, i.e., the first principal component highlighted the characters of excavation and transportation area, slope area, and cumuli and stripping area, while the second principal component highlighted the information of higher and lower vegetation-cover area.

结果表明：由于露天矿区土地扰动下土地类型、面积分布及其景观格局的不同，其遥感影像的光谱空间特征也不相同，但前2个主成分构成的空间特征结构十分明显，第1主成分主要表示采煤运煤区、边坡区以及剥离堆垫区的特征信息，第2主成分主要表示植被高覆盖区及植被低覆盖区的特征信息。

Changtan Jigongshan Nature Reserve within the protection of existing native vegetation intact Cyatheaceae communities, the number reached more than 800 strains, of which more than 400 years old plants, trees up to 4 meters, nearly 20 square meters crown.

长潭自然保护区鸡公山内现有植被原生保护完好的桫椤群落，数量达800多株，其中大植株树龄400多年，树高达4米，冠幅近20平方米。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"