Results 21 to 30 of about 26,186 (115)
Effects of Grass Cover on the Overland Soil Erosion Mechanism Under Simulated Rainfall
Abstract Existing research on soil erosion primarily focuses on the individual effects of factors such as rainfall intensity, slope gradient, grass cover, and soil characteristics, with limited exploration of the interactions among these factors. This study investigated the mechanisms of soil erosion on overland covered with vegetation in the Loess ...
Mingwang Zhang +4 more
wiley +1 more source
Island restoration to rebuild seabird populations and amplify coral reef functioning
Abstract Mobile organisms like seabirds can provide important nutrient flows between ecosystems, but this connectivity has been interrupted by the degradation of island ecosystems. Island restoration (via invasive species eradications and the restoration of native vegetation) can reestablish seabird populations and their nutrient transfers between ...
Ruth E. Dunn +5 more
wiley +1 more source
Greenhouse gas (GHG) emissions from soils play a significant role in contributing to global warming. Vegetation types especially affect soil GHG production. Our findings suggest that the restoration of natural grassland and artificial N‐fixing shrubland like Caragana korshinskii should be encouraged to alleviate GHG emissions, with the practical ...
Jihai Zhou +7 more
wiley +1 more source
Abstract Sustainable land management (SLM) practices is a key to reducing rates of land degradation and has proven to ensure water security by increasing soil moisture availability, decreasing surface runoff, decreasing soil erosion, increasing infiltration, and decreasing flood discharge. Land degradation is adversely affecting over 75% of the Earth's
Melku Dagnachew +5 more
wiley +1 more source
A case for stronger integration of physical landscape processes in conservation science and practice
Abstract I argue that the dynamic nature of contemporary, landscape‐shaping (geomorphic) processes deserves more consideration in conservation science and practice. In an analysis of a sample of fundamental terms related to geomorphology and area‐based conservation in the Web of Science, I found that the terms co‐occurred in <2% of the analyzed entries
Piotr Cienciala
wiley +1 more source
介绍了坡面土壤侵蚀的基本特征和主要类型,综述了坡面土壤侵蚀动力学过程和预报模型等方面的研究进展,包括土壤表层结皮、雨滴溅蚀、片流侵蚀、细沟侵蚀、坡面流输沙、土壤侵蚀界限坡度,以及土壤侵蚀预报模型等 ...
陈力, 李家春, 向华, 刘青泉
core
黄土梁峁坡面土壤侵蚀具有明显的垂直分带性,不同侵蚀带具有各自的侵蚀产沙特点,且彼此相互影响。坡面侵蚀产沙分配受降雨强度和降雨能量的制约,随着雨强和降雨能量的增加,坡面侵蚀产沙量的最大部位由细沟侵蚀带向浅沟侵蚀带过渡,坡面侵蚀产沙强度变化的本质为侵蚀方式的演变。坡面复合侵蚀带的径流模数明显小于对应的单一侵蚀带径流模数,而其侵蚀模数则明显大于对应的单一侵蚀带侵蚀模数。溅蚀片蚀带的来水来沙可使细沟侵蚀带的侵蚀产沙增加21.5%;片蚀+细沟侵蚀带的来水来沙使浅沟侵蚀带的侵蚀产沙量增加16.7%~80.6 ...
康绍忠, 郑粉莉
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此项研究通过对陕、甘、宁等省(区)黄河中游地区的调查研究,揭示了黄土地区土壤侵蚀的状况、发生演变及其分布规律;拟定了土壤侵蚀的分类系统。根据被侵蚀土壤在流水侵蚀中存在的状态,分为:溶蚀、片蚀和沟蚀三种形式。并把以往属于片蚀范围的细沟侵蚀划入沟蚀类型,随后根据不同侵蚀型式在发展过程中的不同阶段的演变情况和地面侵蚀程度作了低级划分。从黄土区特殊情况出发,建议将片蚀分为剖面片蚀、母质片蚀和磷片状侵蚀三个阶段;又以土壤发生层次、斜坡坡度和地面覆盖度等为指标,将各阶段片蚀发展强度划为轻度、中度、强度 ...
朱显谟
core
土壤侵蚀是全球性的严重环境问题 ,而农耕地则是全球土壤侵蚀最严重的地区。农地上存在的水力等侵蚀早已被研究者认识到 ,并且已进行了大量的研究 ,但农地上存在的另一种侵蚀 ,也是从根本上导致农地土壤退化及产生严重水土流失的侵蚀 ,却在以往的土壤侵蚀研究中被大大地忽视 ,这就是耕作侵蚀。耕作侵蚀是土壤物质在耕作机具的作用下发生分散、搬运、沉积的过程。在耕作侵蚀过程中 ,土壤物质主要在农地内发生再分布 ,在坡地上 ,这种再分布则主要表现为坡面土壤的从上向下运动。耕作侵蚀作为一种新近认识到的重要侵蚀过程 ...
王占礼
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