نتایج جستجو برای: far from agricultural lands therefore

تعداد نتایج: 5999716  

Journal: :Frontiers in Earth Science 2023

EDITORIAL article Front. Earth Sci., 17 January 2023Sec. Hydrosphere Volume 11 - 2023 | https://doi.org/10.3389/feart.2023.1113184

2017
Lin Lin Ziran Ye Muye Gan Amir Reza Shahtahmassebi Melanie Weston Jinsong Deng Shenggao Lu

Cultivated land in China has faced severe challenges in recent years due to rapid urbanization. In 1997, the “cultivated land requisition-compensation balance” policy was implemented by the government to maintain the quantity and quality of cultivated land. Previous studies mainly focused on the quantity changes of cultivated land. In this study, from a quality perspective, we characterized the...

Onwuchekwa Raphael Iheke, Ukandu Ihuoma

This study examined the effect of urbanization on agricultural production in Abia State. Specifically, it categorized the land tenancy status of the farmers, analyzed the effect of urbanization on agricultural productivity and identified the constraints to agricultural productivity. Multistage random sampling technique was used to select the respondents. Primary data collected using structured ...

Journal: :Journal of environmental quality 2013
Heather L Tyler Sheza Khalid Colin R Jackson Matthew T Moore

Passage of agricultural runoff through vegetated drainage ditches has been shown to reduce the amount of pesticides, such as atrazine, exiting out of agricultural watersheds. Previous studies have found that microbial communities in soil from fields treated with atrazine display enhanced rates of atrazine degradation. However, no studies have examined the potential for atrazine degradation in d...

2013
Hans Harmen Smit Erik Meijaard Carina van der Laan Stephan Mantel Arif Budiman Pita Verweij

Land degradation is a global concern. In tropical areas it primarily concerns the conversion of forest into non-forest lands and the associated losses of environmental services. Defining such degradation is not straightforward hampering effective reduction in degradation and use of already degraded lands for more productive purposes. To facilitate the processes of avoided degradation and land r...

ژورنال: علوم آب و خاک 2014
بخشنده مهر, لیلا , جعفری, رضا ,

Continuous decline of groundwater quality for agricultural purposes has become a major concern in extensive arid and semi-arid regions. Therefore, mapping the quality of groundwater on a broad scale is an essential step in land management. This study aimed to map spatial distribution of two important groundwater quality indices including EC and SAR in Isfahan province, Iran, using geostatistica...

Journal: :Journal of environmental management 2002
Hyun-Kil Jo

Carbon dioxide is an important greenhouse gas and a major agent of climate change. This study quantified carbon (C) emissions from energy consumption and C storage and uptake by greenspace for three cities in middle Korea: Chuncheon, Kangleung, and Seoul. Carbon emissions were estimated using C emission coefficients for fossil fuels consumed. Carbon storage and uptake by woody plants were compu...

Journal: :Environmental science & technology 2011
Zhangcai Qin Qianlai Zhuang Xudong Zhu Ximing Cai Xiao Zhang

Using marginal agricultural lands to grow energy crops for biofuel feedstocks is a promising option to meet the biofuel needs in populous China without causing further food shortages or environmental problems. Here we quantify the effects of growing switchgrass and Miscanthus on Chinese marginal agricultural lands on biomass production and carbon emissions with a global-scale biogeochemical mod...

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