物种多样性

At home and abroad to the Sargassum species diversity and their development in the use of few studies, and not go far enough.

目前国内外对马尾藻中的物种多样性及其发展利用研究很少，且不够深入。

This paper has three parts, of the Guangdong coast Sargassum species diversity assessment, Guangdong Sargassum resource utilization status and future resource protection and development of countermeasures were studied.

本论文共有三个部分，分别对广东沿海马尾藻的物种多样性的评价、广东马尾藻资源利用的现状以及今后的资源保护和发展对策进行了研究。

The decreasing trend type,which is the main type in China,including the north part ofDaxinanling,the Xiaoxinanling,the Changbai Mountain,the Maxian Mountain,the westpart of Tianmu Mountains,the Mupu Mountain,the Donggong Mountain,the BaizuMountain,the Jiufeng Mountains,the Jiulong Mountain,the Fengyang Mountain,theWangyang Mountain,the Badagong Mountain,the Hefeng Mountain,the Qixing Mountain,the Fanjing Mountain,the Leigong Mountain,the Xishan in Kunming,the Jinfo Mountain,the Haba snow Mountain,the Zhenkang snow Mountain in which the plant species diversitydecreased steadily,and the Huangshan Mountain,the Hualong Mountain,the SheulongjiaMountain,the Dupangling,the Jiu Lian Mountain in which the species diversity decreasewith the difference,the latter is of a slight"the mid-altitude bulge".

趋势减少型为我国山地森林群落植物物种多样性变化的主要形式，其中再区分为大兴安岭北部山地、小兴安岭、长白山、马衔山、西天目山、幕埠山、洞宫山、百祖山、南鹫峰山、九龙山、凤阳山、万洋山、八大公山、鹤峰山、七星山、梵净山、雷公山、昆明西山、金佛山、哈巴雪山、镇康大雪山等平稳减少型；黄山、化龙山、神农架、都庞岭、九连山和武夷山地、点苍山、西双版纳低山地等波动减少型，这些山地存在轻度的"中等高度的膨胀"现象，但东北地区的山地、浙闽粤低山丘陵区的大部分山地、湘西、鄂西和川黔交界区山地的"中等高度的膨胀"现象不甚明显

No significant correlation was found between the density of other taxa and the trophic level.

大型底栖动物的物种多样性与营养水平呈显著负相关。

These studies can provide some theoreticalbases for scientifical management of understory plants,protection of soil fertility,and restoration andprotection of species diversity.

以便为杉木人工林林下植被的科学管理、人工林地力维护及物种多样性的恢复和保护提供理论依据。

In order to study the effects of enclosure on species diversity of degraded upland meadow, C.

为研究封育对不同退化山地草甸物种多样性的影响，以C。

Of Renyard's new theory of species variegation in segmented arthropods?

雷诺的分割类人猿物种多样性的新理论有何评价？

Renyard's theory of species variegation?

雷诺的物种多样性？

The last, the species diversity of Yellow Sea was threatened seriously.

第三，黄海物种多样性维持服务的提供受到严重威胁。

However, those decreased in secondary forest dominated by Alchornea trewioides, Mallotus conspuyrcatus, Eurycorymbus cavaleriei with lower species diversity. The SOM contents in rock-soil (110 g kg-1) and soil surface microhabitat (77 g kg-1) in gentle slope decreased significantly, which were only 32% and 35% of that in primary forest, respectively; but there were not significant differences in SOM, TN and AN contents in depression between the two vegetations.

以红背山麻杆、广西野桐、伞花木等为优势种的次生林，物种多样性较原生林低，SOM、TN、AN含量也低，缓坡石土面和土面小生境的SOM分别为110 g kg-1和77 g kg-1，是原生林的32%和35%，下降幅度最大，其次为陡坡，而洼地的差异不明显。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。