Results 11 to 20 of about 1,953 (154)
Shuitu Baochi Xuebao, 2022 中国南方丘陵区存在着自然过程和人类活动交互影响的、土地利用—土地覆盖叠加变化的多种土壤景观，其土壤质量对乡村农业产业发展具有重要影响。在南京市远郊的溧水区晶桥镇芝山村域小流域，选取流域内生态保护的林地、农业利用的园地、旱地和稻田4种土壤景观，于秋季分别采集表土样品，测定土壤基础理化性质、土壤团聚体粒径组成及土壤微生物磷脂肪酸和胞外酶活性分布，分析土壤肥力、土壤团聚化、土壤生物活性等关键性质在不同土壤景观中的变异情况，并采用土壤质量评价方法探明土壤景观与表土质量的变化关系。结果表明，与原生林地相比 ...
赵正 +13 more
doaj
Spatial-temporal Variation of Water Yield in Nanbei Panjiang River Basin Based on InVEST Model [PDF]
, 2023 [Objective] The temporal and spatial variation characteristics of water yield and differences in the water yield function for different land use types, soil types, and topography in the Nanbei Panjiang River basin were analyzed in order to provide a ...
Chen Quan +5 more
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Methods in Ecology and Evolution, Volume 11, Issue 1, Page 22-37, January 2020., 2020 Abstract Climate change is a world‐wide threat to biodiversity and ecosystem structure, functioning and services. To understand the underlying drivers and mechanisms, and to predict the consequences for nature and people, we urgently need better understanding of the direction and magnitude of climate change impacts across the soil–plant–atmosphere ...
Aud H. Halbritter +116 more
wiley +1 more source
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
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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
Effects of Desert Land Cultivation on Soil Aggregate Stability and Carbon Fixation [PDF]
, 2023 [Objective] The response of soil aggregate stability and organic carbon before and after land reclamation using different land use types were analyzed in order to provide a scientific theoretical basis for wasteland reclamation, vegetation restoration ...
Chen Xue +4 more
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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
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
Effects of Desertification on Phosphorus Fractions of Alpine Meadow Soils [PDF]
, 2023 [Objective] Soil phosphorus fractions determine the migration and availability of phosphorus during soil evolution. The spatial distribution characteristics of soil phosphorus fractions in alpine meadows under different desertification levels were ...
Gao Yongheng +5 more
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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
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