Results 21 to 30 of about 2,194 (176)
Shuitu Baochi Xuebao, 2005 研究塔里木河中下游湿地及其周边土壤理化性状,包括土壤粒度组成、土壤水分、盐分、pH和养分的空间异质性结果表明:大范围分布的土壤质地以沙质或粉沙质壤土为主,少数属壤质沙土或粉沙土,不同类型土地或植被条件下土壤粒度组成存在差异;土壤水分的空间分布特征反映了塔里木河中下游湿地的旱化现象;广泛分布的盐土、盐渍化土和碱化土表现出对植物生长发育的明显胁迫作用;土壤有机质、全N和全P总体贫乏,全K含量较高,反映了干旱区湿地土壤的特点。
钱亦兵 周华荣 赵锐锋 张立运 李国振 热甫开提
doaj +2 more sources
Shuitu Baochi Xuebao, 2021 为研究晋西黄土区退耕还林后不同植被覆盖下土壤的入渗特征及土壤质量评价，采用野外双环入渗法测定土壤的入渗特征，并测定不同地类土壤的容重、孔隙度、有机质、全氮等指标，使用相关性分析研究不同类型植被覆盖下土壤的入渗性能及其与土壤理化性质的相关关系，并将各地类的土壤理化性质进行主成分分析。结果表明：（1）植被类型对于土壤渗透速率影响较大，表现为天然次生林>刺槐×油松混交林>刺槐纯林>油松纯林>灌木林地>苹果园地>荒草地>农田（玉米地）。（2）退耕还林后，不同植被类型的土壤理化性质差异显著（P灌木林地>苹果园地 ...
刘畅 +7 more
doaj
Effect of Soil Conditioner Interface Modification on Migration Characteristics of Saline-Alkali Ions in Irrigation Area of Yellow River [PDF]
, 2023 [Objective] Through the treatment of hydrophilic and hydrophobic by the conditioner, the influence of different interface characteristics of the conditioner on the soil water and salt transport law was explored, and the improvement mechanism of fly ash ...
Chen Xiangyu +5 more
core +1 more source
Shuitu Baochi Xuebao, 2020 紫色土坡耕地是我国西南地区重要的耕地类型，为了探讨土壤管理措施对紫色土坡耕地侵蚀耕层质量的影响，以紫色土坡耕地耕层土壤为研究对象，采用铲土侵蚀模拟试验小区，建立不同侵蚀程度（侵蚀年限）的坡耕地定位试验，以不施肥为对照（CK），设置了化肥管理措施（F）、生物炭+化肥管理措施（B+F），对比分析土壤管理措施对土壤理化性质及力学性能影响，采用土壤质量指数法分析紫色土坡耕地侵蚀耕层质量变化特征。对3种土壤管理条件下坡耕地耕层质量及恢复作用进行评价。结果表明：（1 ...
叶青 +5 more
doaj
Spatial Multi-objective Optimization of Land Use of Kashgar Area Based on NSGA-Ⅱ and GeoSOS-FLUS [PDF]
, 2022 [Objective] The spatial optimization of land resources in the Kashgar area was studied to provide theoretical support for sustainable development of the society and economy of the area. [Methods] Food security, economic benefits, and ecological benefits (
Gou Zhenzhen +4 more
core +1 more source
Shuitu Baochi Xuebao, 2007 以植被演替空间序列代替时间序列的方法,在野外选取广西喀斯特地区4个主要植物群落演替阶段即草地、灌草地、灌丛、乔林的典型样地,对土壤物理、化学和生物学性状进行了比较研究,以探讨植被演替对土壤质量的影响。结果表明:不同的植被演替导致了土壤物理、化学和生物学性质的显著差异。随演替的正向进行,土壤综合肥力指标值(Q I)呈增长趋势,其土壤质量综合指数分别为:草地(0.09)、灌草地(0.16)、灌丛(0.61)、乔林(0.89)。自然植被的正向演替是提高土壤质量的有效途径 ...
王韵 +4 more
doaj +2 more sources
Greenhouse gas emissions from croplands of China [PDF]
, 2003 China possesses cropland of 1.33 million km 2. Cultivation of the cropland not only altered the biogeochemical cycles of carbon (C) and nitrogen (N) in the agroecosystems but also affected global climate.
Bohan, Liao +13 more
core +1 more source
Effects of Micro-topography Modification on Soil Moisture Dynamics in Cold and Arid Mining Areas of Southern Piedmont of Tianshan Mountain [PDF]
, 2023 [Objective] The effects of spatial and temporal dynamics of soil moisture on micro-topography modification (0—50 cm) were determined in order to provide a scientific basis and theoretical support for land reclamation and ecosystem reconstruction in cold ...
Lai Chengyun +5 more
core +1 more source
World Water Policy, Volume 12, Issue 1, February 2026.ABSTRACT Water security in tropical regions faces escalating pressures from climate change, land‐use shifts, and population growth. We conducted a bibliometric review of 1146 peer‐reviewed articles (1964–2023) on tropical water security. Latent Dirichlet Allocation identified 13 thematic topics and their evolution. Publications rose sharply after 2012,
Karling Fernanda Schuster +3 more
wiley +1 more source
Shuitu Baochi Xuebao, 2006 以四川盆地西缘中低山坡地为研究样地，根据实际地貌特征分别选取3个典型山体、2个典型土壤类型。山体坡面不同坡位下土壤质量综合指数（PI）研究表明土壤质量指数随山体坡面位置相对海拔高度的降低而增高。不同利用方式下土壤质量综合指数（QI）研究表明，人工林的土壤质量指数值显著偏高，坡耕地的指数值最低。中低山坡地土壤质量的变化特征主要依赖于土地利用与覆盖之间的差异。故必须加强坡耕地规范治理，实施植被保护与重建等一系列土壤资源持续利用措施，实现土壤质量的持续健康发展。
高雪松, 邓良基, 张世熔, 曾敏
doaj +2 more sources