Effects of plumbum on structure of soil animal community 污染对土壤动物群落结构的影响
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
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。
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。
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。