综述了赤潮的发生与沿岸海域富营养化的关系。近几十年来,人类活动使得天然水体的富营养化进程大大加速。营养负荷的增加与高生物量水华的增多相联系。控制营养输入后,浮游植物生物量或有害藻类水华事件也相应减少。营养的组成与浮游植物的种类组成及水华的形成有密切联系。有机营养对有害藻类水华的促进作用受到关注。营养输入时机影响浮游植物种间竞争的结果,因而对浮游植物的群落演替具有深远影响。由于浮游植物存在生理差异,因而对营养加富的反应因种而异。营养在调控某些有毒藻类的毒素产量方面也发挥着重要作用。此外,营养输入与藻类水华之间存在复杂的间接联系。当然,营养状况并非浮游植物群落演替的唯一决定因素。研究结果提示,控制营养输入、减缓水域富营养化是减少有害藻类水华发生的有效途径,而深入研究典型有害藻类的营养生理对策则为防治并最终消除有害藻类水华提供了理论基础

论述了农业生态系统的能量流动物质循环原理、系统相关原理、相生相克原理、忍耐极限原理、结构功能原理、系统开放原理、限制因子原理、非加和原理、生物竞争原理和竞争排斥原理；认为中国生态农业是一种较为典型的可持续发展的农业系统类型,建议在国家持续农业发展进程中要积极推行生态农业,

Degradation of three herbicides, atrazine, cyanazine and dicamba, was assessed in laboratory microcosms incubated under simulated methanogenic conditions using sediment from Pearl River of Southern China as an inoculum. Atrazine was much more resistant to degradation than cyanazine and dicamba over 300 days of incubation. Biodegradation of cyanazine and dicamba was further substantiated by establishment of enrichment transfer cultures in which the degradation of the respective herbicide was accelerated by the active microorganisms. Degradation of cyanazine initially involved the removal of chlorine and the two side chains, while that of dicamba was O-demethylation reaction forming 3, 6-dichlorosalicyclic acid. Results suggest that biodegradation of xenobiotics can be established through enrichment culture transfer technique, and further mechanism of degradation and microorganisms involved can be elucidated.

The perennial chenopod sub-shrub Artemisia halodendron Turcz. ex Bess. is endemic to the semi-xed and mobile sand dunes in Inner Mongolia of northern China and is an important sand-stabilizing plant. A. halodendron can persist through either sexual reproduction (seed- ling recruitment) or vegetative propagation. However, it is not known if there are differences in patterns of reproductive allocation in A. halodendron inhabiting semi-xed and mobile habitats. To characterize this, a test of eld measurements was conducted on two typical semi-xed and mobile sand dune habitats. In each habitat, 120 individual A. halodendron plants were randomly sampled at the time of seed production to examine changes in some reproductive characters including the number of owering shoots, dry weight of owering shoots, dry weight per owering shoot, dry weight of seed, and reproductive effort (RE = seed dry weight/total above-ground dry weight) between habitats. Although total above-ground dry weight and dry weight of vegetative biomass were similar between habitats, plants inhabiting the less eroded semi-xed habitat produced more owering shoots, greater dry weight of owering shoots, dry weight of seed and RE than those inhabiting the more eroded mobile habitat. This suggests that sexual reproduction is relatively favored by plants from the semi-xed habitat, whereas vegetative propagation is favored by plants from the mobile habitat. The allocation of resources to reproduction was size-dependent and specic to habitats sampled. Reproductive biomass and the number of owering shoots per plant increased with increasing vegetative biomass, with plants in the semi-xed habitat producing more owering shoots and greater reproductive biomass than plants in the mobile habitat. Plant size did not inuence RE, indicating that allocation of resources to reproduction appeared to be a constant proportion across all plant sizes sampled.

二十碳五烯酸（EPA）具有的重要作用引起人们广泛关注,微藻是生产ＥＰＡ的最佳来源。许多微藻具有利用有机碳进行兼养和异养的能力,可以弥补自养培养光限制的不足,并且提高了ＥＰＡ产量。综述了碳、氮和磷等几种重要营兼养和异养３种培养方式生产ＥＰＡ的影响,阐明兼养和异养是微藻生产ＥＰＡ的有效培养方式。