This paper introduces a set of regional atmosphere environmental quality prediction systems suitable for coastal hilly topography condition.
介绍了一套适合沿海丘陵地形条件的区域大气环境质量预测体系 ,它主要由局地扩散模式 (HPDM模式、Misra模式 )、中尺度气象场模式和区域扩散模式 (分段烟流模式 )组成 ,该系统具有较快的计算速度。
Study on Enzyme Activity in Hilly Red Soil Resumed by Different Vegetations;
丘陵红壤不同植被恢复方式下土壤酶活性的研究
Agricultural ecosystem productivity of typical drainage areas found in valleys of hilly areas on loess plateaus: A case study on Zhifanggou;
黄土高原丘陵沟壑区典型流域农业生态系统生产力研究——以纸坊沟为例
Improvement of Magnesium Nutrition for Tea Gardens on Hilly Red Soil in the Southern Hunan Province;
红壤丘陵茶园镁营养调控研究
Through the model, a soil erosion class map of a red clay hilly land in Xiaohuashan region was drawn.
通过模型处理，利用电子计算机绘制出属第四纪红色粘土丘陵的小华山地区的土壤侵蚀等级图。
The characteristics of emergences of rock landslides and soil landslides in different zones of the low mountain hills and river valley, and the relationships among the distribution of landslides and elevation, landform, triggering factors are also studied.
本文从地质环境出发，探讨了滑坡不同带（区）变形破坏密度、强度特征：不同带（区）岩质、土质滑坡在低山、丘陵、河谷等不同地段出露特征；滑坡分布与高程、地形地貌与触发因素的关系。
Aiming at the currently shortcomings of pumping irrigation system planning in cascade pumping stations in hilly areas, the authors establish a mathematical planning model with the objective of minimum annual cost of the pumping irrigation project, and introduce the solution method of DDDP (Discrete Differential Dynamic Programming) to solve the model.
针对目前丘陵地区梯级泵站提水灌溉系统规划中的缺陷 ,以提水工程的年折算费用最小为目标 ,建立了数学规划模型 ,并介绍了离散微分动态规划法来求解该模型 ,解决了长期困扰水利规划人员的丘陵地区梯级泵站规划中的两个难点问题 :多级提水的级数如何确定 ;各级间的扬程如何分配。
Production of fruit cane in hilly area helps to prosper the local fruit market,promote life quality of residents, improve income of farmers.
丘陵地区发展果蔗生产,丰富了地产果品种类,改善城乡人民的生活质量,增加农民的经济收入。
Through analyzing the transect factors and stability of stone bank and soil bank constructed in Shijia village, Pingyi county,and based on actual condition of the hilly area,optimal design was carried out to the parameters of terrace building,an optimal mathematical model was established.
根据丘陵区实际情况对梯田修筑参数进行优化设计 ,并建立了适用于丘陵区的梯田优化设计数学模型。