نتایج جستجو برای: farmland fragmentation

تعداد نتایج: 38625  

Journal: :Entropy 2011
Ashok K. Mishra Grigorios T. Livanis Charles B. Moss

Farmland values are affected by numerous factors, including farm policy, shifts in demand for agricultural output both foreign and domestic, monetary policy and urban pressure. In this study we use an information measure to examine whether the shift toward a more market-oriented policy in 1996 changed the relationship between farmland values and government payments. The results indicated that t...

2011
Jason Henderson Michael Duffy

Farmland values are often viewed as the bellwether for the U.S. farm sector. Historically, booming farm incomes have been quickly capitalized into farmland values. Over the past year, cropland values in the Corn Belt have jumped more than 25% above year ago levels according to various university and Federal Reserve surveys. Moreover, ranchland values are posting strong double-digit gains in som...

2010
Xiangbo Han Zhanli Liu

The design and implemental plan of the farmland irrigation remote monitoring system with variable frequency and constant pressure based Configuration Software and multiple serial port communication were introduced. The implementation of the communication between inverter, PLC, ADAM and KingView was studied. The data acquisition and monitoring scheme were analyzed. The hardware and software desi...

2012
Yanmin Ren Yongxia Yang Yuchun Pan Yu Liu Yunbing Gao Xiumei Tang Zhixuan Zeng

The basic farmland within the protection areas was required to be of high-quality and connective in the general plans for land use. A new method was developed to delineate the boundaries of high-quality, concentrated and connective cultivated land. Based on mathematical morphology principles and GIS methods, the high quality of cultivated land blocks could be identified through dilation and ero...

2014
Minghong Tan

In metropolitan areas of China, farmland functions have undergone tremendous changes due to rapid urbanization and rising income per capita in the past three decades. This study examines tempo-spatial changes in the farmland functions, using a case study of the Beijing metropolitan area. The results indicate that: (1) during the past three decades, agricultural production experienced two transi...

2010
Weidong Zhuang Chun Wang

In order to realize the farmland information pinpointing acquisition, this paper has conducted the technology research for farmland information collecting and processing based on the DGPS. According to the precision agriculture’s demand which agricultural condition information should be made positional, fast, precise, continuous acquisition, system uses the DGPS receiver and the touch-screen co...

2016
Aaron W. Thompson Linda S. Prokopy

This paper focuses on understanding the collaborative process as a critical aspect of building community capacity to respond to change and uncertainty in the landscape. Can focusing on place-based relationship building enhance a community’s ability to make difficult land use decisions? Collaborative initiatives to preserve farmland and open space have emerged as a process that supports local in...

Study of land use/cover changes is widely used in environmental planning. During the last decade, growing increase of aridity in Uromiyah Basin has become a major regional and even national problem. The purpose of this study is to reveal the changes in land use/cover in the southern and southeastern parts of the basin with using 2 images for month of July of 2000 to 2017. Landsat TM and OLI dat...

2016
Naisen Liu Weixing Cao Yan Zhu Jingchao Zhang Fangrong Pang Jun Ni

Wireless sensor networks (WSNs) are suitable for the continuous monitoring of crop information in large-scale farmland. The information obtained is great for regulation of crop growth and achieving high yields in precision agriculture (PA). In order to realize full coverage and k-connectivity WSN deployment for monitoring crop growth information of farmland on a large scale and to ensure the ac...

2017
Tan Chen Qiuhao Huang Miao Liu Manchun Li Shulin Deng Dong Chen

Regional ecosystems have been greatly affected by the rapid expansion of urban areas. In order to explore the impact of land use change on net primary productivity (NPP) in rapidly developing cities during the current urbanization process, we quantified land use change in Liaoning province between 2000 and 2010 using net primary productivity as an indicator of ecosystem productivity and health....

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