| 1. | Effects of plumbum on structure of soil animal community
污染对土壤动物群落结构的影响 |
| 2. | Community structure of soil macro - invertebrate in greenbelt habitat in shanghai
上海城市绿地生境中春季大型土壤动物群落结构研究 |
| 3. | Among them , t he human activity destroyed the layers and structures of soil , and made soil ero sion become severe
酸度高、肥力低、土质较好是园内土壤的一个共同特征。 |
| 4. | The authors analyzed three soil and water conservation measures : biological measures , engineering measures , tillage measures , which control the dissipative structure of soil erosion
分析了控制土壤侵蚀耗散结构的生物措施、工程措施、耕作措施等三项水土保持措施。 |
| 5. | Pam treatment can prevent the disintegration of soil aggregates , even improve the structure of soils and prevent crust formation . pam , with high viscosity , can significantly increase water infiltration
Pam具有良好的黏结力，能有效改良土壤的表层结构，维护了土壤孔隙连通性，增加土壤的入渗率。 |
| 6. | Recently , more and more phenomena have not been explained by the existing theories , which being noticed by engineers and researchers . as one important characteristic , structure of soil has attached more and more attention
近年来随着工程实践的增多，越来越多的工程技术人员和研究人员认识到岩土工程中的许多现象难以用现有的土力学理论解释，结构性作为土的一个重要特性日益引起人们的广泛关注。 |
| 7. | The release of organophosphate pesticides to the soil environment will disturb the community structure of soil microorganisms . some groups were decreased or disappeared , but some groups which can adapted to the contamination have been the dominant groups
有机磷农药释放到环境中，必定会对环境中的微生物群落产生影响，持续的污染使得有的微生物种群数量减少以至被淘汰，有的则适应污染环境而成为优势群。 |
| 8. | The researches of dynamic behavior and liquefaction potential of saturated sands have been further . however , more and more macroscopic liquefaction phenomena and experimental investigations show that different depositional environments lead to different structure of soils , while the influence of structure property of soils on liquefaction resistance is no less than that of density and consolidation stress and so on . ancient alluvial flat deposits , namely recently deposited soils , are easier liquefaction during earthquake
对于一般饱和砂土的动力特性和液化势的研究已比较深入，然而，愈益增多的宏观现象和试验研究表明，由于土的沉积环境不同而导致土的结构性的差异，而土的结构性对抗液化能力的影响并不亚于密度、固结压力等因素，古河漫滩堆积物即新近沉积土在地震当中更容易液化。 |
| 9. | In original and jamming slightly vegetation , because dead roots , branch and leaves back to soil , soil organic matter higher , soil available phosphorus higher , too ; chemical and physical characters of soil were stabilization . the reason were original vegetation have more species and structure of community was stable . the degradation of fertility and structure of soil in secondary vegetation was influenced by change with structure and form of community
在人为干扰小的原生性森林，植物种类丰富，群落结构稳定，植物死根系和枯枝落叶全部回归土壤，土壤有机质含量高，养分呈有机态为多，故有效磷较高，土壤理化性质较稳定；次生植被群落土壤结构和肥力的退化是由于群落组成和结构的改变导致枯枝落叶成分和土壤发规白山地还小问沙消民俗一非定俗地征王卿乔忡旺w比收财育环境差异而引起，次生植被土壤的退化状态随植被退化程度不同而有差异。 |
| 10. | Study on granular structure in laterite vn soil has already been reported in different land use pattern but it is little about soil fertility in karst environment . the better the soil structure , the higher the content of water - stable soil aggregate so there is an osculation correlation between aggregate and structure of soil
不同利用模式下红壤团粒结构的特征研究己有报道，但关于岩溶环境中土壤变化的研究则很少。土壤团聚体与土壤的结构密切相关，团聚体含量高，则说明土壤结构好。 |
