In this paper,the diversity and ecological dominance as well as succes- sion degree of twenty-four plant communities in the north shore of Qing- hai Lake are measured on the basis of Shannon-Wiener index,Simpson index and succession degree formula.
本文通过用 Shannon—Wiener 多样性指数、Simpson 生态优势度指标及演替度公式,测定了青海湖北岸24个群落的物种多样性、生态优势度和演替度,定量研究了植物群落的组成结构和演替程度。
After that,ordination of communities was conducted; succession rate and successional divergence and convergence were analyzed.
根据2003和2005年分别对36和34块撂荒群落及其生境的调查结果,分析了撂荒群落的排序演替规律、演替速度及演替趋同或趋异性。
Patterns of Succession of Different Types of Wetland Vegetations in Shandong;
山东湿地植被类型和演替规律的研究
Plant community succession of degradation and desertification in sandy grassland.;
沙质草原植物群落退化与沙化演替
Soil seed bank of plant communities along restoring succession gradients in Horqin Sandy Land;
科尔沁沙地植被恢复演替进程中群落土壤种子库研究
Evolution and countermeasure of agro-ecoeconomic system in low-hilly red earth areas.;
低丘红壤区农业生态经济系统演替与对策——以江西省鹰潭市为例
Study on Resource-Dependent Cities Transformation and Industry Evolution Mechanism Based on Entropy Theory;
基于熵理论的资源型城市转型与产业演替机理研究
Based on the achievements of others, in this paper, I make an outline on Cathaysia Flora’s distribution, composition, origin, evolution, extinction,its comparison with global contemporaneous floras and so on.
文章在总结前人科研成果的基础上,择要对华夏植物群的分布、组成、起源、演替、绝灭以及与同期其他植物群的比较等作一综述。
lagoon marsh associes
泻湖沼泽演替系列群丛
A sere on uncovered rock is a lithosere.
在光秃岩石上的演替系列是岩生演替系列。
Originating in a moderately moist habitat.Used of a sere.
中生演替的在一中等潮湿的环境里发生的。用于指生态演替
RESEARCH ON THE RESTORING SUCCESSION OF THE DEGENERATED GRASSLAND IN INNER MONGOLIA──Ⅱ.ANALYSIS OF THE RESTORINC PROCESSES
内蒙古草原退化群落恢复演替的研究──Ⅱ．恢复演替时间进程的分析
The successional law and mechanism of aerial seeding community were studied.
本文主要探讨了飞播后植被的演替规律和演替机制。
Preliminary Studies on Insect Community Succession in Wheat Fields in the South of Shanxi
晋南麦田昆虫群落演替规律初步研究
LATE PALAEOZOIC ERA COAL FORMING ENVIRONMENTS′ EVOLUTION IN THE ZIBO AREA,SHANDONG PROVINCE
山东淄博地区晚古生代成煤环境演替
Vegetation Background and Succession Rule in Northwest China;
西北地区植被背景值及演替规律研究
The Evolving Regulation and Developing Trend of Corn Production in JiLin Province;
吉林省玉米生产演替规律及发展趋势
Studies on the Succession of Weed Communities in Paddy Field and Their Control Techniques;
稻田杂草群落演替及其防治技术研究
Study on the Succession of Vegetation after Aerial Seeding in Mu Us Sandy Land;
毛乌素沙地飞播后植被演替规律研究
Study on Succession of Plant Communities on Abandoned Lands in the Northwest Shanxi, China;
晋北低中山撂荒地植物群落演替研究
The understudy be substitute when the leading actor fall Ill
主角演员患病, 由替角代替演出
A performer who understudies.
替角，预备演员当替角的演员
The understudy is substituted when the leading actor falls ill.
主角演员患病，由替角代替演出。
The understudy was substituted when the leading actor fell ill.
主角演员患病, 由替角代替演出.
understudy for a leading actor
为代替主角演出而研习
an actor able to replace a regular performer when required.
在必要时能够代替正规演员的演员。