Results 41 to 50 of about 3,276 (165)
Shuitu Baochi Xuebao, 2000 针对石灰岩丘陵土层浅薄、干旱缺水的主要问题，在坡改梯的基础上，测定了不同旱作保水技术措施的土壤含水量、土壤物理性状、土壤水文状况、土壤养分含量、土壤水分特征曲线、土壤导水率和土壤有效水含量等综合指标。结果表明：其旱作保水效果为覆膜〉保水剂〉覆草〉松土〉对照；对寒露蜜桃产量和质量综合评价为覆膜〉覆草〉保水剂〉松土〉对照。
杨吉华 张永涛
doaj +2 more sources
The Terraced Walls Significantly Influence the Spatial Distribution of Soil Water in Terraced Areas on the Loess Plateau [PDF]
[Objective] Converting slopes into terraces is a crucial soil and water conservation and agricultural measure on the Loess Plateau. Understanding the impact of terraced walls on soil water is conducive to preserving soil water and enhancing terrace ...
BAI Chenyun +5 more
core +1 more source
137Cs-based Estimation of Soil Erosion and Organic Carbon Loss in Alpine Meadow Soil on Tibetan Plateau [PDF]
, 2023 [Objective] Soil erosion and its associated carbon loss in an alpine meadow on the Tibetan Plateau were quantitatively analyzed in order to provide a reference for comprehensively evaluating the impact of soil erosion and for implementing effective soil ...
Li Wenjia, Lu Haiya, Yu Shiyong
core +1 more source
Shuitu Baochi Xuebao, 2002 土壤水分有效性的高低是制约石渣土生产能力的关键因素之一。对丹江口库区郧县石渣土 3种不同土石比土壤水分有效性的研究表明 :土壤水分有效性与土壤中的土 (<2 mm)石 (>2 mm)比关系密切。土壤蒸发、持水、导水和供水能力均与土壤中的土石比的大小有关。 3种土壤的持水能力 ,以石砾含量较少、质地较粘的土壤最强 ,以石砾含量较多、质地为壤质的土壤最低。而土壤水分蒸发能力与砾石含量呈负相关 ,土壤水分扩散率则与砾石含量呈正相关。适中土石比的土壤可提高入渗性能 ,减少蒸发量 ,提高供水性能。
吕国安 蔡崇法 等
doaj +2 more sources
Shuitu Baochi Xuebao, 2008 采用烘干法及WP4水势仪对黄土高原水蚀风蚀复合区人工林下土壤重量含水量及水势进行测定,从土壤水分数量和能量两方面分析该区土壤水分时空分布和动态变化特征,并且通过实测数据对不同树种土壤水分特征曲线进行拟合,旨在为该区今后植被建设及生态用水提供理论参考。结果表明,各树种在0-300 cm土层土壤含水量随深度增加而逐渐降低,并趋于稳定。0-30 cm土层土壤含水量变化剧烈,30 cm以下土层土壤含水量逐渐降低,并趋于稳定在3.00%~5.00%。土壤水分受降雨量及其分配影响显著,观测期内土壤储水量盈余26.7
周海光 +4 more
doaj
Response of annual ring width of Tamarix spp. to groundwater depth in the hinterland of the Taklimakan Desert [PDF]
[Objective] Tamarix spp. is a typical species in the arid desert ecosystem, which is important to study the response of Tamarix spp. to groundwater for its protection.
Anwaier Abudureyimu +2 more
core +1 more source
Shuitu Baochi Xuebao, 2020 为解决区域土壤质地类型针对性氮肥施用问题，在轻壤土和黏壤土上分别设置不施氮肥，氮肥基追比3：7，4：6，5：5，6：4和7：3处理，研究小麦产量、水氮利用效率以及土壤含水量、贮水量、NH4+-N、NO3--N动态变化规律。结果表明：轻壤质土壤氮肥基追比4：6的处理小麦产量、水分利用效率、氮肥生产效率最高分别为8 265.3 kg/hm2，27.6 kg/（hm2·mm），34.4 kg/kg。黏壤质土壤氮肥基追比5：5的处理小麦产量、水分利用效率、氮肥生产效率最高分别为8 363.2 kg/hm2，28.
袁浩 +7 more
doaj
Effects of Vegetation Restoration on Soil Infiltration and Runoff in the Gully Regions on the Loess Plateau [PDF]
[Objective] To study the effects of vegetation restoration on rainfall infiltration and runoff is of great theoretical and practical value for rational utilization of watershed water resources and ecological construction.
BAI Yungang +4 more
core +1 more source
Atmospheric turbulence and land - atmosphere energy transfer characteristics in the surface layer of the Northern slope of Mt. Qomolangma area : abstract [PDF]
, 2006 Based on the turbulent data collected at Quzong site, on the northern slope of Mt. Qomolangma, from April 2005 to March 2006, macro-scale turbulent statistical characteristics and land-atmosphere energy transfer before and after the onset of southwest ...
Li, Maoshan +6 more
core +2 more sources
Shuitu Baochi Xuebao, 2017 以名山河流域不同类型土壤为研究对象，研究了不同土地利用方式下土壤有机碳和团聚体中有机碳含量的分布特征。结果表明：（1）名山河流域3种类型的土壤有机碳含量在17.50~34.70 g/kg之间，含量高低表现为水稻土>黄壤>紫色土，水稻土含量分别是黄壤和紫色土的1.32，1.39倍；从不同的土地利用方式看，水田土壤有机碳及活性有机碳含量显著高于旱地、茶园和果园，土壤活性有机碳与土壤有机碳呈极显著正相关（R2=0.884 6）；（2）土壤有机碳含量在土壤剖面中表现出随着土层深度的增加而降低的趋势，表层土壤（0—
李欣雨 +4 more
doaj