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Study on the Method of soil productivity Assessment in Black soil Region of Northeast China

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Agricultural Sciences in China 2009年第4期8卷 472-481页

作者： DUAN Xing-wu XIE Yun FENG Yan-jie YIN Shui-qing State Key Laboratory of Earth Surface Processes and Resource Ecology School of Geography Beijing Normal University Beijing 100875P.R. China

The objective of this paper is to investigate a simple and practical method for soil productivity assessment in the black soil region of Northeast China. Firstly, eight kinds of physicochemical properties for each of 120 soil samples collected from 25 black soil profiles were analyzed using cluster and correlation analysis. Subsequently, parameter indices were calculated using physicochemical properties. Finally, a modified productivity index （MPI） model were developed and validated. The results showed that the suitable parameters for soil productivity assessment in black soil region of Northeast China were soil available water, soil pH, clay content, and organic matter content. Compared with original productivity index （PI） model, MPI model added clay content and organic matter content in parameters while omitted bulk density. Simulation results of original PI model and MPI model were compared using crop yield of land block where investigated soil profiles were located. MPI model was proven to perform better with a higher significant correlation with maize yield. The correlation equation between MPI and yield was： Y= 3.2002Ln（MP/）＋ 10.056, R^2 = 0.7564. The results showed that MPI model was an effective and practical method to assess soil productivity in the research area.

关键词： PI MPI soil productivity black soil region of Northeast China

Effects of soil and water conservation and its interactions with soil properties on soil productivity

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Journal of Central South University 2012年第8期19卷 2279-2285页

作者：郭旺李忠武申卫平王晓燕曾光明陈晓琳张雪张越男刘桂平王曙光 College of Environmental Science and Engineering Hunan University Key Laboratory of Environmental Biology and Pollution Control of Ministry of Education(Hunan University) soil and Water Conservation Research Institute College of Civil Engineering and Architecture Changsha University of Science and Technology

The effects of soil and water conservation （SWC） on soil properties are well documented. However, definitive and quantitative information of SWC and its interactions with soil properties on soil productivity is lacking for hilly red soil region of southern China. Experiments were conducted in the hilly red soil region of southern China for seven years in three rtmoffplots, each of which represented different SWC forest-grass measures. Principal component analysis and multiple regression techniques were used to relate the aboveground biomass （representing soil productivity） to soil properties. Based on the final regression equations, soil organic carbon content （Sot） is significantly correlated with soil productivity under the condition of forest-grass measures, whereas pH value and cation exchange capacity （Cee） are the main factors for soil productivity without SWC. Therefore, SWC plays an important role in sequestering Soc and improving soil productivity.

关键词： hilly red soil region soil erosion soil organic carbon soil productivity

Drainage of paddy terraces impacts structures and soil properties in the globally important agricultural heritage of Hani Paddy Terraces,China

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International soil and Water Conservation Research 2024年第1期12卷 64-76页

作者： Ming Wang Li Rong Yanbo Li Jiangcheng Huang Yuanmei Jiao Xiaoyan Wei Institute of International Rivers and Eco-Security Kunming650500China Yunnan Key Laboratory of International Rivers and Transboundary Eco-Security Kunming650500China Power China Kunming Engineering Corporation Limited Kunming650051China Department of Geography Yunnan Normal UniversityKunming650500China Yunnan Provincial Archives of Surveying and Mapping(Yunnan Provincial Geomatics Centre) Kunming650032China

Marginalization and abandonment of paddy terraces are widespread,but their effects on the sustainability of subsequent agricultural production are still *** Paddy Terraces,included in Globally Important Agriculture Heritage Systems,are threatened by paddy fields ***,changes in terrace structure,the productivity of topsoil(0-20 cm),and soil water holding capacity at 0-70 cm depth were determined in a case study of Hani Paddy Terraces in Amengkong River Basin in Yuanyang County in Southwestern China,which had been converted into dryland terraces for 2-14 *** results showed that:(1)The degree of terrace structures degradation exhibited a U-shaped curve with increasing time since draining,with those drained for 5-9 years having the best structure;(2)soil productivity index decreased first and then increased with time after conversion;(3)Maximum water holding capacity at 0-70 cm soil depth dramatically decreased after conversion and such trend became increasingly obvious with increasing time since *** study revealed that drainage of paddy terraces along with associated changes in crop and field management led to an increase in soil productivity,but degradation of terrace structures and a decrease in water holding capacity will inhibit restoration to paddy *** findings enhance the understanding of the biophysical changes due to marginalization in paddy terraces.

关键词： Hani paddy terraces Terraces marginalization Terrace structure degradation soil productivity Water holding capacity

Conocarpus Biochar Induces Changes in soil Nutrient Availability and Tomato Growth Under Saline Irrigation

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Pedosphere 2016年第1期26卷 27-38页

作者： Adel Rabie A.USMAN Mohammad I.AL-WABEL Yong S.OK Abdulaziz AL-HARBI Mahmoud WAHB-ALLAH Ahmed Hamdy EL-NAGGAR Mahtab AHMAD Abdulelah AL-FARAJ Abdulrasoul AL-OMRAN soil Sciences Department College of Food Agricultural SciencesKing Saud UniversityP.O.Box 2460Riyadh 11451(SaudiArabia) Department of soils and Water Faculty of AgricultureAssiut UniversityAssiut 71526(Egypt) Korea Biochar Research Center Kangwon National UniversityChunehon 200-701(Korea) lant Production Department College of Food and Agricultural SciencesKing Saud UniversityP.O.Box 2460Riyadh 11451(Saudi Arabia) Vegetable Crops Department Faculty of AgricultureAlexandria UniversityAlexandria 21321(Egypt) Department of soil Science Faculty of AgricultureAin Shams University68 HadayekShobraP.O.Box 11241Cairo 11241(Egypt) Agricultral Engineering Department College of Food&Agricultural SciencesKing Saud UniversityP.O.Box 2460Riyadh 11451(Saudi Arabia)

Thermally modified organic materials commonly known as biochar have gained popularity of being used as a soil *** information, however, is available on the role of biochar in alleviating the negative impacts of saline water on soil productivity and plant growth. This study, therefore, was conducted to investigate the effects of Conocarpus biochar(BC) and organic farm residues(FR) at different application rates of 0.0%(control), 4.0% and 8.0%(weight/weight) on yield and quality of tomatoes grown on a sandy soil under drip irrigation with saline or non-saline water. The availability of P, K, Fe, Mn, Zn and Cu to plants was also investigated. The results demonstrated clearly that addition of BC or FR increased the vegetative growth, yield and quality parameters in all irrigation treatments. It was found that salt stress adversely affected soil productivity, as indicated by the lower vegetative growth and yield components of tomato plants. However, this suppressing effect on the vegetative growth and yield tended to decline with application of FR or BC, especially at the high application rate and in the presence of biochar. Under saline irrigation system, for instance, the total tomato yield increased over the control by 14.0%–43.3% with BC and by 3.9%–35.6% with FR. These could be attributed to enhancement effects of FR or BC on soil properties, as indicated by increases in soil organic matter content and nutrient availability. Therefore, biochar may be effectively used as a soil amendment for enhancing the productivity of salt-affected sandy soils under arid conditions.

关键词： drip irrigation organic farm residues organic matter content salt stress sandy soils soil amendment soil productivity

Continental-scale assessment of provisioning soil functions in Europe

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Ecological Processes 2013年第1期2卷 350-367页

作者： Gergely Tóth Ciro Gardi Katalin Bódis Éva Ivits Ece Aksoy Arwyn Jones Simon Jeffrey Thorum Petursdottir Luca Montanarella Institute for Environment and Sustainability Via Fermi Joint Research Centre Institute for Environment and SustainabilityVia Fermi 2749 TP280Ispra 21027Italy

Introduction:A framework is developed to link major soil functions to ecosystem services *** soil functions—with primary linkages to ecosystem services—are evaluated on a continental scale in ***:We defined major provisioning soil functions combining the approaches proposed by the Millennium Ecosystem Assessment and the Thematic Strategy for soil Protection of the European *** productivity was evaluated by three main land use types(cropland,grassland,forest)using a validated expert model called *** include soil,climate and topographic *** material provision capacity of soils was assessed on the basis of(i)organic carbon content and(ii)availability of soil materials for ***:A coherent system of soil function-based ecosystem services was compiled,taking into account major soil *** also produced new data on soil-based provisioning ecosystem services,including productivity and raw material *** attempts to cover the main human activities requiring materials of soil origin and to map the locations where those materials are available on a continental scale provide new insight to this field of ***:soil-based ecosystem services can be assessed by the evaluation of soil functions which play a role in the production of these *** analysis and comparison of the spatial distribution of the investigated soil functions were *** crop productivity showed a general trend to increase in a northward and westward direction,local soil quality in most regions—except in the Mediterranean—can compensate for climatic handicaps to a great *** of areas with potential for providing ecosystem services by individual soil functions highlights the complexity of decision-making for resource utilization but also the possibilities for optimization and more conscious management.

关键词： soil ecosystem services Provisioning functions soil productivity soil quality Land evaluation

Termites Improve the Horizontal Movement of Carbonized Particles:A Step towards Sustainable Utilization of Biochar

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Phyton-International Journal of Experimental Botany 2022年第10期91卷 2235-2248页

作者： Mazhar Ali Nasir Masood Hafiz Muhammad Rashad Javeed Ibrahim Al-Ashkar Khalid F.Almutairi Liyun Liu Muhammad Aqeel Sarwar Karthika Rajendran Ayman EL Sabagh Department of Environmental Sciences COMSATS University IslamabadVehari CampusVehari61100Pakistan Department of Plant Production College of Food and AgricultureKing Saud UniversityRiyadh11451Saudi Arabia Graduate School of Integrated Sciences for Life Hiroshima UniversityHiroshima739-8528Japan Crop Sciences Institute National Agricultural Research CentreIslamabad44000Pakistan VIT School of Agricultural Innovations and Advanced Learning(VAIAL) Vellore Institute of Technology(VIT)Vellore632014India Department of Agronomy Faculty of AgricultureKafrelsheikh UniversityKafr El-Shaikh33516Egypt

soil amendments containing carbonized materials increase the soil carbon reservoir,influence plant productivity,and,ultimately,help to clean the *** is data on the effect of such additions on soil physicochemical properties or plant growth,but few studies have focused on how these carbonized materials are distributed by termite species in the soil *** is the first comprehensive study of the transportation of biochar(BC)by termite species under tropical environmental conditions in *** present study was carried out to test the hypothesis that if termite species I)were involved in the distribution of biochar particles II)if yes,then how far these particles were transported during the study period(10 days)and III)check their preference between the enriched BC(EBC)and non-enriched *** was enriched with the cattle slurry after its pyrolysis in the *** results showed that EBC particles were significantly more widely distributed than non-enriched BC particles,but both types of BC were transported more than 4 cm(ring 4)within 10 days(at the end of the experiment).The current study also revealed that EBC was easily attached to the setae,cuticle,and legs of termites,implying that it could potentially be transported over a greater ***,transportation of EBC over larger distances indicated a potential preference of termite species between the EBC and BC *** the study,however,the preference among the termite species was also *** the prevailing study conditions,the Coptotermes heimi and Heteroterme indicola species transported the EBC further than Microtermes obesi and Odontotermes *** findings revealed that transportation preferences were observed among the four termite *** conclusion,the current study found that termites were involved in the distribution of BC particles,with a preference for EBC and that these have the potential to transport BC particles more than 4 cm within 10 da

关键词： Enriched biochar termite species distribution micro-particles feeding stations soil productivity

RANGELAND RECOVERY TRENDS AFTER THE ESTABLISHMENT OF CONTOUR BUNDS IN SELECTED MICRO-CATCHMENTS OF THE LAKE VICTORIA BASIN, UGANDA

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RANGELAND RECOVERY TRENDS AFTER THE ESTABLISHMENT OF CONTOUR...