【摘 要】
:
Agricultural geospatial information is critical for agricultural policy formulation and decision making,land use monitoring,agricultural sustainability,crop acr
【机 构】
:
Research and Development Division USDA National Agricultural Statistics Service,Institute of Agricul
【出 处】
:
Journal of Integrative Agriculture
论文部分内容阅读
Agricultural geospatial information is critical for agricultural policy formulation and decision making,land use monitoring,agricultural sustainability,crop acreage and yield estimation,disaster assessment,bioenergy crop inventory,food security policy,environmental assessment,carbon accounting,and other research topics that are of vital importance to agriculture and economy.Remote sensing technology enables us
Agricultural geospatial information is critical for agricultural policy formulation and decision making, land use monitoring, agricultural sustainability, crop acreage and yield estimation, disaster assessment, bioenergy crop inventory, food security policy, environmental assessment, carbon accounting, and other research topics that are vital importance to agriculture and economy .Remote sensing technology enables us
其他文献
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、测量监控等方面人手,介绍了S226海滨大桥
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、测量监控等方面人手,介绍了S226海滨大桥
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、测量监控等方面人手,介绍了S226海滨大桥
Pig and poultry production in China had experienced considerable changes from 1960 to 2010.The present study aimed to evaluate the effects of these changes on g
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、测量监控等方面人手,介绍了S226海滨大桥
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、测量监控等方面人手,介绍了S226海滨大桥
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、测量监控等方面人手,介绍了S226海滨大桥
目的了解空军飞行学员的心理应激状况以及不同年级飞行学员的心理差异,为有针对性开展军校飞行学员心理健康保健和心理训练提供理论依据。方法采用横断面调查,应用军人心理应激自评问卷(psychological stress self-evaluation test, PSET)对空军某院校1 150名飞行学员进行心理测试。受调查研究对象按照年级划分为大一组、大二组、大三组和大四组。应用SPSS 17.0软
Groundwater is a key component for water resources in Sanjiang and Songnen Plain,an important agriculture basement in China.The quality and the renewability of