贵州水城盆地的抽水塌陷研究

塌陷是岩溶地区的一种主要地质灾害,其成因多种多样,但过量抽取地下水是形成塌陷的主要原因．本文以水城盆地抽水塌陷为例．论述了抽水塌陷发育的分布特征,探讨了抽水塌陷的形成条件和形成机理,并简要地提出了防治对策．     

我国历史地震时滑坡崩塌的发育及分布特征

作者研究了我国历史地震是崩滑坡的分布规律。发现我国历史地震时引起的崩塌滑坡等山坡失稳地质灾害主要集中分布在强震多发，地形复杂的地带，其中尤以南北地震带上最为集中。     

强震地面破坏预测的宏观经验

本文根据工程实践中经常遇到的问题，利用近代国内外强震的大量震害资料和有关研究成果，阐述了强震引发砂土液化、崩塌滑坡和地面断裂等地震地质灾害发生的规律性，可直接用于强震地面破坏的宏观定性评估，也可供地震动和地震地面破坏的理论模型分析参考。     

陕西崩塌灾害及其时空分布特征

本文论述了陕西的崩塌灾害，并根据陕西的地质地貌特征和地质灾害防御实践，对区内的崩塌进行了分类，在此基础上分析总结了陕西崩塌灾害的时空分布特征。     

Technological change and fisheries sustainability: The point of view of Adaptive Dynamics

The analysis of a simple model shows that exploitation of fish stocks can entrain in the long run the substantial decline or even the collapse of the stock, as well as difficulties in stock recovery, loss of fishery resilience, and reduction of the mean fish size. The results are in agreement with numerous observations, even though they are obtained with a simple model in which the harvesting fleet and the fish stock are considered as unstructured predator and prey. The study is carried out for the typical case of fleet dimension not too sensitive to the year-to-year fluctuations of the stock and assuming that the sole cause of evolution is technological innovation. The analysis is performed by means of Adaptive Dynamics, an approach born in theoretical biology which is used here in the context of technological change. Although the results are qualitatively consistent with those obtained long ago through the principles of bioeconomics, it is fair to stress that the underlying assumptions are different. In fact, in the bioeconomic approach fleet technology does not evolve and fishing effort varies to produce economic optimization, while in the Adaptive Dynamics approach technological innovation is the key driver. The paper is purely theoretical and the proposed model can hardly be tuned on any real fishery. No practical guidelines for managers can therefore be drawn, if not the general conclusion that long-term sustainability of exploited fish stocks can only be achieved if strategic parameters influencing technological change are kept under strict control.