搜索结果: 1-15 共查到“NPP”相关记录30条 . 查询时间(0.062 秒)
为探明大湄公河次区域植被净初级生产力(NPP)时空变化特征,基于GoogleEarthEngine(GEE)云计算平台,利用MOD17A3HGFNPP时序数据,采用线性趋势分析方法,分析了2001—2019年大湄公河次区域植被NPP的时空变化特征。结果显示:(1)2001—2019年间大湄公河次区域植被NPP总体较高,植被NPP年均值整体上变化趋势不显著,变化波动较大,且与年均温度有显著的负相关性...
GRASSLAND NPP MONITORING BASED ON MULTI-SOURCE REMOTE SENSING DATA FUSION
Multi-source remote sensing Data fusion Net primary productivity Carnegie-Ames-Stanford Approach model
2018/5/11
Vegetation is an important part of the terrestrial ecosystem. It plays an important role in the energy and material exchange of the ground-atmosphere system and is a key part of the global carbon cycl...
ESTIMATING HOUSING VACANCY RATE IN QINGDAO CITY WITH NPP-VIIRS NIGHTTIME LIGHT AND GEOGRAPHICAL NATIONAL CONDITIONS MONITORING DATA
Housing vacancy rate (HVR) NPP-VIIRS Nighttime light data Geographic National Conditions Monitoring Data (GNCMD) resident population distribution data SVM Moran's I
2018/5/15
Accompanying China's rapid urbanization in recent decades, especially in the new millennium, the housing problem has become one of the most important issues. The estimation and analysis of housing vac...
ESTIMATING PM2.5 IN XI’AN , CHINA USING AEROSOL OPTICAL DEPTH OF NPP VIIRS DATA AND METEOROLOGICAL MEASUREMENTS
Aerosol optical depth PM2.5 VIIRS Remote sensing inversion Nonlinear model
2018/5/16
In recent years, the air pollution is becoming more and more serious, which not only causes the decrease of the visibility, but also affects the human health. As the most important pollutant particula...
NPP评估过程模型应用研究进展
北京大学净第一性生产力 过程模型 全球变化 人类活动因素
2018/4/18
NPP评估研究一直是生态学研究的热点，其中NPP过程模型方法获得了较大的发展。首先阐释了过程模型的类别、NPP评估应用环节、实用性差异等问题，并总结了近年来模型建设和模型间比较研究。其次，归纳总结当前利用过程模型开展的NPP评估研究，包括NPP全球变化研究和人类活动因素研究，前者着重介绍了驱动力和尺度研究等问题，后者主要关注快速城镇化过程中NPP的响应和第一产业影响两方面，此外，还总结了中国学者在...
CAPACITY OF FOREST CARBON SEQUESTRATION DRIVEN BY NPP INCREASING IN CHINA
NPP Turnover time Carbon sink Efficiency Forest China
2015/12/28
Forest ecosystem could significantly sequestrate some atmospheric CO 2 and, therefore, partly mitigate current pressure on global warming. The carbon sequestration capacity of forest ecosystem is dete...
A RAPID CLOUD MASK ALGORITHM FOR SUOMI NPP VIIRS IMAGERY EDRS
Suomi NPP VIIRS Cloud Mask Algorithm
2015/5/6
Suomi National Polar-orbiting Partnership (NPP) is the first of a new generation of NASA's Earth-observing research satellites. The Suomi NPP Visible Infrared Imaging Radiometer Suite (VIIRS) collec...
Influence of Agricultural Developments on Net Primary Productivity (NPP) in the Semi-arid Region of India: A Study using GloPEM Model
Agricultural net primary productivity Agricultural mechanization Semi-arid region Irrigated area Fertilizer use
2014/12/15
The present study aims to assess the effect of agricultural developments on inter-annual variations in the agricultural Net Primary Productivity (NPP) of selected districts of the semi-arid region of ...
Prioritising Carbon Sequestration Areas in Southern Queensland using Time Series MODIS Net Primary Productivity (NPP) Imagery
Carbon MODIS Net Primary Productivity Ecosystem Change Spatial Dynamic
2014/12/15
The aim of this study was to develop a method that will use satellite imagery to identify areas of high forest growth and productivity, as a primary input in prioritising revegetation sites for carbon...
人类活动对湿地植被NPP影响的定量研究获进展
人类活动 湿地植被NPP 生态系统 沼泽湿地
2014/10/24
定量区分气候变化和人类活动对生态系统的影响是全球变化科学研究的热点和难点。确定统一的度量指标是实现气候变化和人类活动影响定量区分的重要步骤。基于遥感数据估算的植被NPP，是生态系统生产能力的重要表征，对于生产力变化的分析可以定量刻画生态系统对全球变化的响应，从而对沼泽湿地退化与恢复的相关驱动要素进行科学调控与管理，是湿地生态系统保护和管理所面临的重要课题。
Isotopic ratio of radioactive iodine (129I/131I) released from Fukushima Daiichi NPP accident
Fukushima iodine accelerator mass spectrometry isotopic ratio soil
2017/4/11
In March 2011, there was an accident at the Fukushima Daiichi Nuclear Power Plant (NPP) and a discharge of
radionuclides resulting from a powerful earthquake. Considering the impact on human health, ...
区域尺度下气候因子的插值优化及其与草地NPP的相关性
AMMRR 草地NPP 年均温 年降水量
2013/8/6
利用甘肃省及周边42个气象站点的气象数据和154个草地样地地上生物量（风干质量）实测数据，在AMMRR插值方法的基础上，加入坡度、坡向两个变量，对甘肃省1996－2005年的年均温和年降水量、不同季节温度和降水量进行空间模拟，并分析了甘肃省年均温和年降水量的空间分布格局，以及草地净初级生产力(NPP)对年均温、年降水量和不同季节温度、降水量的响应。结果表明，1）相对其他插值方法，引入了坡度、坡向等...
Atmospheric Response to Fukushima Daiichi NPP (Japan) Accident Reviled by Satellite and Ground observations
Atmospheric Fukushima Daiichi NPP Satellite Ground observations
2011/8/2
Abstract: Immediately after the March 11, 2011 earthquake and tsunami in Japan we started to continuously survey the Outgoing Long-wavelength Radiation (OLR, 10-13 microns) from NOAA/AVHRR. Our prelim...
俄罗斯布里亚特共和国植被NPP对气候变化的时空响应
CASA模型 植被NPP 气候因子 布里亚特共和国
2011/12/14
以遥感和气象数据为主要数据源,运用改进后的CASA模型,估算了俄罗斯布里亚特共和国2000—2008年的植被NPP,并验证了模型的精度,分析了该地区植被NPP的时空变化规律及其与气候因子的相互关系。研究结果表明:时间上,植被NPP年际上呈现为在波动中上升,月份上表现为先升后降的趋势;空间上,植被NPP随经度的增加而增大,随纬度的增加而减小,由西南到东北逐渐递增的趋势;不同植被类型的NPP也不同,从...