there are some other services such as biological diversity, soil formation and erosion control, gas regulation, food and raw materials, recreation and culture.
其次为生物多样性保护、土壤形成与保护、气体调节、食物生产和原材料、娱乐文化等服务功能。
in all soil formation processes, it is new replenishment of theory:「weathering process and loamifiction process are in progress at the same place and time」.
本文对整个土壤形成过程中「风化过程和成壤过程同时同地进行」的理论,作了新的补充;
dense weathering cracks as new bearing water space have been discovered, and it is known that grain void was formed in soil formation processes and was not formed in depositional processes.
进而发现了密集风化裂隙含水空间的新类型 ,提出了粒间孔隙不是沉积形成的 ,而是土壤化的产物 。
according to the natural factors of soil formation and the development, degree of soil, under the influence of human production activity, the huangmian soils were devided into four types.
根据自然成土因素和在人为作用影响下的土壤熟化程度,将该小流域的黄绵土进一步划分为四种土壤类型。
the soil type, cause of soil formation and soil quality changes of holocene loess-soil sequence have been clearly distinguished.
通过本文各指标的研究,进一步认识了汾渭平原全新世土壤的类型、成因与质量演变。
the karst region is very fragile eco-environment with slow soil formation process, shallow and discontinuous soil, small water holding capacity, and low vegetation coverage.
喀斯特环境有成土过程缓慢、土层浅薄、土被不连续、土壤持水量低、植被覆盖率低的特点。
this thesis focuses on the slab track layed on the soil formation. a mechanical model of slab track layed on the soil formation is established, and system analysis is made for its stress performance.
since 1999, a de-blocking agent slp was tried in oil transporting pipelines in this district and remarkable effect in preventing soil formation as well as de-blocking of the existing soils are found.