Effects of different land use types on soil structure and hydraulic characteristics of reclaimed coal mines in semi-arid areas [PDF]
In order to explore the water characteristics of soil in reclaimed coal mines in semi-arid areas and make better use of the land in reclaimed mining areas, the basic physical properties, water characteristic curves, unsaturated water conductivity and ...
Duomei LI +5 more
core +1 more source
退化草地恢复生态对土壤物理性状的影响——以藏北公路沿线车辆碾压干扰矮嵩草草甸为例
Shuitu Baochi Xuebao, 2006 通过对西藏那曲地区碾压干扰矮嵩草草甸群落不同恢复演替阶段土壤物理性状调查,分析不同演替阶段土壤颗粒组成、土壤容重和孔隙度,对其物理特性进行研究。结果表明:植被恢复有效改善了土壤的物理性质,提高了土壤对侵蚀动力的抵抗能力;退化草地恢复演替阶段与土壤物理性状变化具有明显的相关性联系,植被恢复与演替有效改善了土壤的物理性质,提高了土壤对侵蚀动力的抵抗能力。(1)碾压使土壤暴露,致使侵蚀作用加剧,松散、不黏结的砂粒和粉粒流失量较大,而粒径小于0.02 mm和黏结性较强的粘粒流失量相对较少而表现出百分比相对增加 ...
杨颖慧, 张锦华, 杨春华
doaj
Spatial relationship between root system and soil properties of mature and densely planted Kuerlexiangli pear under long-term strip fertilization [PDF]
[Objective] Kuerlexiangli pear (Pyrus sinkiangensis Yü et Lu.) is the main cultivar in Southern Xinjiang. In recent years, the main trunk dense planting pear orchard has developed rapidly and entered the peak fruiting period.
AN Shijie +9 more
core +1 more source
Studies on the rhzispheric microorganisms of Tsuga Longibracteata in different communities [PDF]
, 2005 Tsuga longibracteata is a kind of rare and immemorial plant listed as the protected tree in Fujian Province and is endemic to China. Tsuga longibracteata has good properties and it is also one important kind of potential timber tree and for restoration ...
向伟
core
Shuitu Baochi Xuebao, 2003 通过研究比较不同植被类型下土壤中微生物区系、土壤酶活性和土壤生化作用强度,分析了贵州高原喀斯特环境退化演变过程中土壤质量的生物学特性变化过程。结果表明:随喀斯特环境退化程度加剧,土壤微生物总数下降,各主要生理类群数量呈下降趋势,土壤酶活性减弱,土壤生化作用强度降低,对环境反应敏感,可作为反映土壤质量的生物学指标。土壤微生物和酶活性是表征喀斯特环境退化演替过程中土壤质量的重要特征之一。
龙健 李娟 滕应 黄昌勇
doaj +2 more sources
Shuitu Baochi Xuebao目的为探究全球变暖背景下，放牧遗留效应对冻结期盐渍化草地土壤酶活性的影响。方法以河西走廊盐渍化草地为研究对象，设置对照（CK）、放牧（FCK）、增温（W）和增温+放牧（FW）4种处理方式，探究不同处理下土壤酶活性变化规律及空间分布特征。结果与CK相比，FCK处理显著提高土壤水分体积分数和全氮质量分数，降低土壤有机碳质量分数；W处理降低土壤水分体积分数，提高土壤有机碳和全氮的97.61%和16.89%；而FW处理均显著提高土壤水分体积分数、有机碳和全氮质量分数，全磷质量分数显著低于对照40.81 ...
孙佳星 +4 more
doaj
Combined Effects of Humic Acid-Modified Magnetic Biochar and AMF on the Properties of Saline-Alkali Soil and Photosynthetic Parameters of Muskmelon [PDF]
[Objective] To improve humic acid-modified magnetic biochar (HA-MBC) and explore the combined effects of modified biochar and arbuscular mycorrhizal fungi (AMF) on the properties of saline-alkali soils and the growth of muskmelon.
CHEN Xinyan +12 more
core +1 more source
退化草地恢复生态对土壤物理性状的影响——以藏北公路沿线车辆碾压干扰矮嵩草草句为例
Shuitu Baochi Xuebao, 2006 通过对西藏那曲地区碾压干扰矮嵩草草甸群落不同恢复演替阶段土壤物理性状调查，分析不同演替阶段土壤颗粒组成、土壤容重和孔隙度，对其物理特性进行研究。结果表明：植被恢复有效改善了土壤的物理性质，提高了土壤对侵蚀动力的抵抗能力；退化草地恢复演替阶段与土壤物理性状变化具有明显的相关性联系，植被恢复与演替有效改善了土壤的物理性质，提高了土壤对侵蚀动力的抵抗能力。（1）碾压使土壤暴露，致使侵蚀作用加剧，松散、不黏结的砂粒和粉粒流失量较大，而粒径小于0．02mm和黏结性较强的粘粒流失量相对较少而表现出百分比相对增加 ...
杨颖慧 张锦华 杨春华
doaj
Shuitu Baochi Xuebao, 2017 为揭示喀斯特地区不同石漠化程度土壤理化性质特征及其影响机制，以贵州毕节石漠化地区土壤为研究对象，在雨季前、中、后对潜在、轻度、中度、强度石漠化程度的土壤进行了为期4年的监测，分析了不同石漠化程度土壤理化性质及其各项指标之间的相关性特征。结果表明：同一石漠化程度下，土壤有机质、全磷、有效磷、全氮和水解氮含量表现为雨季中＞雨季后＞雨季前。随着石漠化程度的加深，土壤田间持水量、毛管持水量、毛管孔隙度和总孔隙度升高，全磷、有效磷和有机质含量减少。与潜在石漠化程度相比，轻度 ...
李开萍 +5 more
doaj
Effects of Different Logging Residue Treatments on Acid Hydrolyzed Soil Organic Carbon Fractions and Soil Microbial Communities in a Chinese Fir Plantation [PDF]
[Objective] Acid hydrolyzed soil organic carbon fractions are important in soil, and the changes of their contents will affect soil microbial community composition.
GUO Jianfen +5 more
core +1 more source