生态群落

Long temporal controlled field study with herbivorous animal is essential to investigate the productivity and stability of plant community.

群落稳定性的生态学研究一直缺乏动物利用条件下的长时间梯度田间试验，而混播草地的放牧利用年限是生态脆弱的南方喀斯特山区生态环境建设和资源可持续利用的关键问题之一。

The relationship between hydrophyte and water environment should be considered during the recovery of water ecological environment.

在恢复水域生态环境过程中，应充分考虑水生植物与环境的协同作用，根据环境条件和群落特性，合理配置水生植物群落，形成稳定可持续利用的生态系统。

"Ecosystem" means a dynamic complex of plant, animal and micro-organism communities and their non-living environment interacting as a functional unit.

"生态系统"是指植物、动物和微生物群落和它们的无生命环境作为一个生态单位交互作用形成的一个动态复合体。

It is dedicated to education and research focusing on a wide diversity of research areas, including the quantitative population ecology of plants and small mammals, terrestrial plant community ecology, grassland biodiversity and restoration ecology, plant fungal pathogen dynamics and population biology, successional changes in terrestrial insect communities, terrestrial ecosystem ecology, the remote sensing of natural resources, life history theory, molecular evolution in vascular plants, evolutionary and theoretical population genetics, theoretical ecology, and limnology and aquatic ecology, basic biology of insects, Ecophysiology; paleobotany; population genetics, evolution of plants and fungi.

其主要致力于生态学和进化生物学的教育和研究，主要学科领域包括植物和小型哺乳动物种群生态学、陆地植物群落生态学、牧草生物多样性和恢复生态学、植物真菌病原动力学和种群生物学、陆地昆虫群落连续改变、陆地生态系统生态学、自然资源遥感、生命史理论、维管束植物分子进化、进化和理论种群遗传学、理论生态学、湖沼学和水生动物生态学、基础昆虫生物学、生态生理学、古植物学、种群遗传学、植物和真菌的进化等。

Species-pairs were positive correlation,including 10 species-pairs were higher significant positive correlation and 24 speciespairs were significant positive correlation, and 263 species-pairs were negative correlation, including 8 species-pairs were higher significant negative correlation and 28 species-pairs were significant negative correlation, which were tested by Spearman＇ s rank correlation coefficient.

正负相关比为0.7643，显著种对占总对数的15.05%，群落优势种种间多呈不显著关联。2）按照31个建群种和优势种对环境的适应方式和主导生态因素，它们被划分为2个生态种组：芦苇组和早熟禾组。3）关帝山撂荒地植物群落以退耕还林的先锋物种为主，表明植物群落处于森林植被恢复的初期演替阶段。

Also, during this process, the water content in vegetation increases and keeps stable gradually, and the water environment in ecosystem will become suavely.

摘 要：本文以南亚热带常绿阔叶林为基本，同时探讨了热带南亚热带森林演替系列中8种生态系统类型的水分结构，发现植被水分结构的恢复与土壤水分结构的恢复是不同步的，50a以上没有受扰动的土壤，其土壤水分结构在时空上才趋于稳定；植被水分结构的时空稳定性基本上与生态系统的演替状况一致；为满足植被蒸腾的需要，植被中水分的月更新次数随着群落向顶极系统的演替而逐渐减少。

Ecological control of sludge bulking is highly important, especially in preventing sludge bulking through ecological relationship such as prey and autoeciousness of microorganisms.

指出丝状菌污泥膨胀的实质是活性污泥微生态系统平衡失调，微生物群落结构与功能发生变化，丝状菌种群代替菌胶团菌群成为优势种；利用微生物种群之间的捕食、寄生等关系控制污泥膨胀的生态学调控方法，是实现控制丝状菌污泥膨胀，保持污泥微生态系统稳定，获得良好污水净化效果的治本之法。

The research indicate that the aquatic ecosystem of Wuhan city lakes now is: elementary production and consumption keep high amount, and accumulate in the water bodies, then the benthon ,so much as fish's community to decline seriously, cause the main nutrients cycle and energy circulation in the system is obstructed, that means the "elementary production-elementary consumption-advanced consumption" replaced by the "elementary production-elementary consumption-analyze by itself – reproduction", this circulation of the the nutrients is unfavorable to the system.

生态系统结构研究表明武汉市湖泊水生生态系统目前所处状态：初级生产和初级消费维持较高生产量和现存量，在水体中积累，而较高层次的底栖生物乃致鱼类群落严重衰退，导致系统中主要物质和能量循环：初级生产—初级消费—高级消费受阻，代之而起的是初级生产、初级消费—自行分解—再生产的循环，不利于系统中物质转移。

The results showed that the niche breath of 9 species are wide, and that the species are pioneer in mine spoil Nanjing Mufu Mountains, the niche breath of Broussonetia papyrifera is wide, but the niche overlap with other species is little.

结果表明：研究的9个树种的生态位总体比较接近，都有比较宽的生态位，从群落形成的时间分析，这些树种是在矿区废弃地上的先锋树种，对废弃地有较强的适应能力。

The ecological water level enhanced by 30m could provide appropriate environment for hydrophytic succession of wetland plants.

研究确定的最小生态水位具有一定科学性，湿地生态水位提高30cm，能够为该区湿地植被群落的水生演替提供适宜生境。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。