Results 51 to 60 of about 3,716 (159)
Shuitu Baochi Xuebao, 2018 旨在明确深松和秸秆覆盖2种措施在紫色土坡耕地中的水分养分流失特征规律，利用径流小区，结合平作、垄作、深松、完整秸秆覆盖和粉碎秸秆覆盖措施共设置9个试验处理，开展了2年的田间试验，对产量、地表径流、壤中流以及径流中的养分流失进行了测定。结果表明：（1）与平作相比，深松可显著增加壤中流量和壤中流中的总氮浓度，增加39.6%的总径流，以及85%的总氮量流失，同时还会降低玉米产量。（2）秸秆覆盖降低地表径流，增加壤中流量和壤中流中的总氮浓度，总径流增加6.4%，总氮量流失增加9.4%，秸秆覆盖对产量无显著影响。（
刘海涛 +6 more
doaj
Importance of connectivity for carnivore richness and occupancy in fragmented biodiversity hotspots
Conservation Biology, Volume 39, Issue 6, December 2025.Abstract Structural connectivity affects wildlife movement between habitat patches, contributing to the persistence of wildlife populations and their resilience to human‐induced and environmental changes. However, its importance to wildlife population persistence remains unclear, particularly in fragmented landscapes, where there are additional co ...
Cindy M. Hurtado +12 more
wiley +1 more source
Shuitu Baochi Xuebao, 2000 我国覆膜稻栽培研究始于１９９６年，但迄今都为地膜单元覆盖，水稻秸秆＋地膜二元覆盖旱作栽培效应的研究结果表明，秸秆＋地膜二元覆盖旱作稻田土壤变温幅度降低，水分散失减少，结构改善，养分积累增加；水稻无效分蘖减少，生育转变提前，灌浆结实期延长，穗大粒多，千粒重高，增产效果显著，稻谷产量较地膜覆盖，秸秆覆盖，露地旱作栽培分别增产１０．３％，８．９％，２３．２％。
杨安中
doaj +2 more sources
Shuitu Baochi Xuebao, 2023 为探究气候和植被覆盖度变化对三峡库区消落带库岸边坡的影响,通过开展人工模拟降雨试验,分析不同雨强和植被覆盖度(0,30%,50%,70%,90%)下坡面侵蚀规律及变化特征。结果表明:(1)在不同雨强下,植被边坡侵蚀累计产沙量均随植被覆盖度的增加呈现下降趋势,整体下降演变的趋势可分为迅猛—平缓—稳定3个阶段,三峡库区消落带库岸边坡的临界盖度为50%~70%,维持植被覆盖度在此区间可以有效抑制坡面的泥沙损失。(2)同一植被覆盖度条件下地表径流相对系数与雨强呈正相关 ...
王瑞红 +6 more
doaj
Ecology and Evolution, Volume 15, Issue 10, October 2025.This paper proposes a ‘relaxed’ point‐count survey method to enhance accessibility and expand geographic coverage by easing these constraints. Surveys can be conducted in diverse locations, including urban areas and travel routes, within flexible timeframes (e.g., 6 h after sunrise or during the evening) and with adaptable spacing between survey points,
Masumi Hisano
wiley +1 more source
Synergistic Effects of No-tillage Combined with Mulching on Improving Soil Moisture Use and Potato Yield [PDF]
[Objective] Considering the severity of both spring drought and spring cold, and shallow effective topsoil in the southern mountainous areas of Ningxia Province, synergistic effects of no tillage combined with mulching on improving soil moisture use and ...
DUAN Ruibing +5 more
core +1 more source
Shuitu Baochi Xuebao, 2017 为研究刚性植被覆盖与地表粗糙共同作用下的坡面流水动力特性，在室内开展定床水槽冲刷试验，研究陡坡（15°）条件下10组流量（0.33～1.95 m3/h）、5种覆盖率（0，0.5%，1.0%，1.5%，2.0%）、4种不同地表粗糙度（0.01，0.18，0.25，0.38 mm）的坡面流流速、流型流态、阻力系数等变化特性。结果表明：（1）水流流速变动范围为0.06～0.59 m/s，流速与植被覆盖率和地表粗糙度呈负相关关系（r＜-0.90），当植被覆盖率增加，流速随流量增加的增幅降低 ...
刘文剑 +3 more
doaj
Integrative Conservation, Volume 4, Issue 3, Page 430-441, September 2025.Our study identifies southern China, including mountainous regions and islands, as key areas rich in phylogenetic diversity, and phylogenetic endemism of lizards that are currently under‐protected. Current protected areas however do not adequately cover regions that are critical for preserving the evolutionary history of lizards.
Tao Liang (梁涛) +8 more
wiley +1 more source
Shuitu Baochi Xuebao, 2004 利用室内模拟降雨试验，研究了秸秆覆盖对坡面土壤矿质氮素径流流失和入渗的影响。结果表明：秸秆覆盖可使侵蚀量显著减少，减沙效应十分明显。由于秸秆覆盖使坡面径流流速减弱，增加了表层土壤与地表径流的作用强度，使溶解和解吸于径流中的矿质氮素含量增加，但由径流显著减少，矿质氮流失总量仍减少。与裸地相比，秸秆覆盖可显著地增加土壤水分和硝态氮的入渗深度和入渗量。
张亚丽 张兴昌 邵明安 李世清
doaj +2 more sources
Integrative Conservation, Volume 4, Issue 3, Page 442-463, September 2025.In this study, we analyze the conservation status of Ethiopia's amphibian and reptile diversity in terms of coverage with protected areas and global representation in conservation breeding facilities. We identify conservation gaps and suggest priorities for improvement.
Kolja Sperling +3 more
wiley +1 more source