farmland相关论文
Since ancient times, the Chinese government has always attached a great deal of importance to food security . However, t......
Urban forest isan importantcomposition and the window and soul of modern cities, which has a close relationship with eco......
This paper is a summarization on evaluation of value of artificial forest. The main contents include: (i) the difference......
A Chinese young man in Iowa “He’s always kind to everyone， always like this，” Eleanor Dvorchak murmurs， looking out o......
To sustain the upland conversion program (UCP) in China after the government compensation expires, we suggest an establi......
介绍了吉林省农业基本概况及农田水利基础设施建设现状,阐述了吉林省农田水利“十二五”建设任务及目标,总结了吉林省近年来农田建......
Soil organic carbon (SOC) has great impacts on global warming, land degradation and food security. Classic statistical a......
Nitrogen (N) cycling in boreal peatland ecosystems may be influenced in important ways by freeze-thaw cycles (FTCs).Adso......
Effects of land-use changes on organic carbon in bulk soil and associated physical fractions in Chin
The Horqin Sandy Grassland is one of the most seriously desertified areas in China’s agro-pastoral ecotone due to its f......
1. Background Today the rural land use in China calls for major concerns. Villages in suburban areas, due to their speci......
请根据下面一组流程图，写一篇题为“饥饿死亡”的短文， 要包括图中的所有要点，也可根据需要适当增加与文题有关的内容。 从上面的......
宅基地使用權制度建設一直是圍擾農村土地改革的一大難題。雖然我國《物權法》在用益物權編設專章規定了宅基地使用權,但將宅基地......
Having undergone seven readings in 13 years,there has been longer deliberation of this civil law than of any other in th......
1. Problematique At present, the shortage of farmland re-sources constitutes a severe threat to sus-tainable social and ......
China has to raise agricultural productivity in its limited and shrinking farmland to guarantee food security for its hu......
The quantity and spatial pattern of farmland has changed in China, which has led to a major change in the production pot......
为了解"十二五"期间全国坡耕地水土流失综合治理工程实施情况,在资料收集、典型调研和专家咨询的基础上,从工程管理、工程建设、实......
Factors Acquisition and Content Estimation of Farmland Soil Organic Carbon Based upon Internet of Th
Aiming at the shortage of sufficient continuous parameters for using models to estimate farmland soil organic carbon(SOC......
Since the 1950 s, noteworthy farmland abandonment has been occurring in many developed countries and some developing cou......
This paper reviews the development of the urban and rural old age security system in China, and discusses the challenges......
Effects of heavy metal pollution on farmland soils and crops: A case study of the Xiaoqinling Gold B
This paper focuses on the heavy metal enrichment and heavy metal pollution degree associated with mining activities in s......
为研究金矿开采区土壤典型污染物空间分布特征,2012年4月在夹皮沟金矿区内按网格法布点,采集了28处土壤样品,对样品pH值、有机质、......
对天津不同程度盐渍化农田(n=4)和荒地(n=4)土壤水溶性有机碳(SOC)和水溶性氮素组成与分布特征进行了研究。结果表明:农田和荒地土......
在人们物质生活日益丰富的现代社会，环境保护的问题正日益引起人们的关注。环境保护包括大气、水资源等的保护。地球上绝大部分面积......
Study on Environmental Risk and Economic Benefits of Rotation Systems in Farmland of Erhai Lake Basi
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
土地资源是人类赖以生存和发展的根本,一个国家的耕地资源更直接关乎着其民族的生存和发展.我国农用土地资源总体质量不高且耕地数......
To quantize the difficulty level of dust production on the surface of different types of farmland,the Marticorena thresh......
为反映农田排水及氮素流失的规律,并推进农田排水面源污染实验教学的发展,将影响农田排水氮素流失的因素进行不同的取值,设计出相......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
Effects of collapsing gully erosion on soil qualities of farm fields in the hilly granitic region of
Collapsing gully erosion is a specific form of soil erosion types in the hilly granitic region of tropical and subtropic......
Extraction and analysis of abandoned farmland: A case study of Qingyun and Wudi counties in Shandong
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
本文基于能值生态足迹法（Emergy Ecological Footprint，EEF）对日照市单位面积耕地的利用的可持续性进行研究。结果表明：在研究时段内，日......
耕地保护是我国一项必须长期坚持的基本国策，但挖塘养鱼现象在农村屡禁不止，对耕地造成严重破坏。本文基于阳春市河口镇金堡区的调查......
Study on Environmental Risk and Economic Benefits of Rotation Systems in Farmland of Erhai Lake Basi
This study was designed to find out an optimised planting system of reducing non-point (source) pollution by analyzing t......
[目的]分析近20年广西土地利用/土地覆盖变化(Land Use and Land Cover Change,LUCC)过程与气候波动对农田生产潜力的影响.[方法]......
Nitrogen(N)cycling in boreal peatland ecosystems may be influenced in important ways by freeze-thaw cycles(FTCs). Adsorp......
利用1950-2008年统计资料和土地详查数据,采用多元统计分析与文献调查,分析了塔克拉玛干沙漠南缘克里雅绿洲近60年来耕地动态变化......
The three-pool and first-order model separates the mineralizable orgaruc carbon into active, slow, and passive carbon po......
The aim of this study was to determine the nitrate pollution status of soil, groundwater, and vegetable from three typic......
Atmospheric sulfur deposition onto typical farmland in East China was investigated using both field measurements and num......
为了研究黑土区坡耕地土壤养分硝态氮径流及壤中流迁移规律,开展了野外原位监测试验,揭示了玉米根系及犁底层影响下径流及壤中流驱......
以五大连池风景区农田附近天然露头泉为研究对象,研究其水体基本污染指标和GC-MS检测结果发现,水体指标符合国标《地表水环境质量......
对揭阳市某农田土壤重金属污染现状进行了研究,提出深翻混合、深翻置换和分层置换3种不同的汞污染修复技术,并在现场分别开展试验......
撂荒作为耕地利用边际化的最终表现形式,是中国近20 a以来耕地利用亟需解决的重要问题之一,而有效获取撂荒耕地信息是探究撂荒耕地......
随着我国能源生产技术的不断提高,为我国的农田灌溉效率提供了根本的保障。国家需要制定科学合理的解决方案,保证农业基本用水的稳......
随着农业经济的多元、蓬勃发展,与农业发展密切相关的农田水利灌溉工程规划设计和灌溉技术研究已成为促进农产品稳产增产的重要环......
