In this field observation we also find an important fact that , even during storm surge period , high tidal flat can still be in sedimentation in some place , no erosion occurred . to tell the typhoon storm surges from cold wave storm surges , 12 monthly sedimentary samples are collected from the modern tidal flat surface at dafeng , jiangsu . palynological analysis of these samples indicates that the seasonal palynological features of the tidal flat sediment are very obvious and some palynological indexes , such as taxon percentage of arboreal , herbaceous pollen and spore , are good indicators to tell the seasonality of the tidal flat deposits 为区分风暴潮沉积是由台风引致还是由寒流或冷锋引致，对长期处于淤积状态的江苏中部大丰县斗龙港附近潮滩，采集了一年中每月小潮期间滩面表层泥样，并在启东茅家港滩面分别采集了6月、 9月与12月的表层泥样，在实验室中，对这些样品进行孢粉等分析，认为在以粉砂、泥为主的潮滩沉积中，孢粉种类百分比，尤其是木本种类占孢粉总种类的百分比是判别季节性潮滩的重要指标，通过启东茅家港工程建设区淤积状况的观测记录对这一判别指标进行了验证。
This paper gives an in - depth analysis of the types , quantity and quality as well as exploitation and utilization status of the economic forest resources including fruit tree forest , woody grain forest , and woody edible oil forest . based upon this , essential problems existing in the exploitation and utilization of the resources are discussed and countermeasures concerning their sustainable development are identified as : 1 ) to take exploitation and utilization of economic resources as a strategy for improving sustainable agricultural development ; 2 ) to strengthen scientific and technical input , improve high - quality degree of economic forest resources and develop varieties with high international competitive ability ; and 3 ) to energetically develop and transform woody eidble oil and grain forests for the realization of their sustainable development 对我国经济(果树，木本粮食、食用油料)林1 )资源的类型、数量、质量特征和开发利用现状进行了深入分析，同时，探讨了经济林开发利用中存在的主要问题，提出了如下的对策和建议：把经济林的开发利用当作农业可持续发展的战略举措来抓；加强科技投入，提高经济林的优质良种化程度，发展有国际竞争力的种类；大力发展和改造以及深度开发木本食用粮食、油料林等种类，从而实现可持续发展。
And the production fluctuation caused by climate changes lead to local farmers to take some unwilling but practical measures such as harvesting a little with cultivating extensively , planting dispersedly and irrigating with wells , combining herbage meadows with woody ones , in the years when disaster happened increasing output of livestock which has become fully - grown and ready for slaughter and planting fast growing and early trees 气候波动引起巨大的农牧业生产波动，导致了农牧民的广种薄收、分散种植、打井灌溉等行为，以及他们采取草本草场与木本草场结合、灾年加大出栏率和栽植速生树种、可平茬树种等资源利用和避灾措施。
