1THE SPATIAL PATTERN CHARACTERISTICS OF SOIL NUTRIENTS AT THE FIELD SCALE

作者： Yang, Yujian; Zhu, Jianhua; Tong, Xueqin; Wang, Dianchang; SCI

机构： Shandong Acad Agr Sci, S&T Informat Engn Res Ctr, Jinan 250100, Shandong, Peoples R China;

来源：COMPUTER AND COMPUTING TECHNOLOGIES IN AGRICULTURE II, VOL 1

关键词： soil nutrients spatial variability GIS precision agriculture

年份：2009

2Study on Spatial Model and Service Radius of Rural Areas and Agriculture Information Level in Yellow-River Delta

作者： Yang, Yujian; Tong, Xueqin; Wang, Zhicheng; Liu, Guangming; SCI

机构： Shandong Univ, Shandong Acad Agr Sci, S&T Informat Engn Technol Ctr, Informat Ctr Agron Coll, Jinan 250100, Peoples R China; Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China;

来源：COMPUTER AND COMPUTING TECHNOLOGIES IN AGRICULTURE V, PT II

关键词： Rural areas and agriculture information level Service Radius Measurement indices Radial basis function Yellow-river Delta

年份：2012

3The Comparative Analysis of Spatial Structure of Ji Wheat 22 Yield Based on Different Stochastic Samplings

作者： Yang, Yujian; Tong, Xueqin; SCI

机构： Shandong Acad Agr Sci, S & T Informat Engn Technol Ctr, 202 Gongye North Rd, Jinan 250100, Peoples R China; Shandong Univ, Informat Ctr Agron Coll, Jinan, Peoples R China;

来源：COMPUTER AND COMPUTING TECHNOLOGIES IN AGRICULTURE V, PT II

关键词： Ji wheat 22 Thiessen polygon Autocorrelation IDW Yield

年份：2012

4The changes of land use and the temporal & spatial characteristics of salt-affected lands on the regional scale

作者： Yang, Yujian; Tong, Xueqin; Zhu, Jianhua; SCI

机构： Shandong Acad Agr Sci, S&T Informat Engn Res Ctr, Jinan 250100, Peoples R China;

来源：PROGRESS OF INFORMATION TECHNOLOGY IN AGRICULTURE

关键词： regional scale land use change spatial and temporal change salt-affected lands

年份：2007

5The spatial continuity study of NDVI based on Kriging and BPNN algorithm

作者： Yang, Yujian; Zhu, Jianhua; Liu, Shuyun; Tong, Xueqin; Zhao, Chunjiang; SCI

机构： Shandong Acad Agr Sci, S&T Informat & Engn Res Ctr, Jinan 250100, Peoples R China; Natl Engn Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China;

来源：MATHEMATICAL AND COMPUTER MODELLING

关键词： NDVI Back Propagation Neural Network Kriging Spatial continuity surface

6THE SPATIAL PATTERN CHARACTERISTICS OF SOIL NUTRIENTS AT THE FIELD SCALE

作者： Yang, Yujian; Zhu, Jianhua; Tong, Xueqin; Wang, Dianchang; SCI

机构： Shandong Acad Agr Sci, S&T Informat Engn Res Ctr, Jinan 250100, Shandong, Peoples R China;

来源：COMPUTER AND COMPUTING TECHNOLOGIES IN AGRICULTURE II, VOL 1

关键词： soil nutrients; spatial variability; GIS; precision agriculture

年份：2009

7The Comparative Analysis of Spatial Structure of Ji Wheat 22 Yield Based on Different Stochastic Samplings

作者： Yang, Yujian; Tong, Xueqin; SCI

机构： Shandong Acad Agr Sci, S & T Informat Engn Technol Ctr, 202 Gongye North Rd, Jinan 250100, Peoples R China; Shandong Univ, Informat Ctr Agron Coll, Jinan, Peoples R China;

来源：COMPUTER AND COMPUTING TECHNOLOGIES IN AGRICULTURE V, PT II

关键词： Ji wheat 22; Thiessen polygon; Autocorrelation; IDW; Yield

年份：2012

8Study on Spatial Model and Service Radius of Rural Areas and Agriculture Information Level in Yellow-River Delta

作者： Yang, Yujian; Tong, Xueqin; Wang, Zhicheng; Liu, Guangming; SCI

机构： Shandong Univ, Shandong Acad Agr Sci, S&T Informat Engn Technol Ctr, Informat Ctr Agron Coll, Jinan 250100, Peoples R China; Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China;

来源：COMPUTER AND COMPUTING TECHNOLOGIES IN AGRICULTURE V, PT II

关键词： Rural areas and agriculture information level; Service Radius; Measurement indices; Radial basis function; Yellow-river Delta

年份：2012

9The changes of land use and the temporal & spatial characteristics of salt-affected lands on the regional scale

作者： Yang, Yujian; Tong, Xueqin; Zhu, Jianhua; SCI

机构： Shandong Acad Agr Sci, S&T Informat Engn Res Ctr, Jinan 250100, Peoples R China;

来源：PROGRESS OF INFORMATION TECHNOLOGY IN AGRICULTURE

关键词： regional scale; land use change; spatial and temporal change; salt-affected lands

年份：2007

10The spatial continuity study of NDVI based on Kriging and BPNN algorithm

作者： Yang, Yujian; Zhu, Jianhua; Liu, Shuyun; Tong, Xueqin; Zhao, Chunjiang; SCI

机构： Shandong Acad Agr Sci, S&T Informat & Engn Res Ctr, Jinan 250100, Peoples R China; Natl Engn Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China;

来源：MATHEMATICAL AND COMPUTER MODELLING

关键词： NDVI; Back Propagation Neural Network; Kriging; Spatial continuity surface

年份：2011