Emergy-Based Evaluation of Changes in Agrochemical Residues on the Qinghai-Tibet Plateau, China

doi:10.3390/su11133652

	Emergy-Based Evaluation of Changes in Agrochemical Residues on the Qinghai-Tibet Plateau, China
	Wang, Xiuhong 1; Zhang, Yili 1,2,3
刊名	SUSTAINABILITY
	2019-07-01
卷号	11 期号:13 页码:12
关键词	agrochemical residues emergy synthesis LMDI decomposition agrochemical inputs agricultural policies the Qinghai-Tibet Plateau
ISSN号	2071-1050
DOI	10.3390/su11133652
通讯作者	Wang, Xiuhong(wangxh@igsnrr.ac.cn)
英文摘要	Study of changes in agrochemical residues on the Qinghai-Tibet Plateau is necessary for the agricultural green development of the fragile plateau and its downstream regions. The total agrochemical residue (TR) caused by main agrochemical inputs was estimated in the study area of Qinghai province and the Tibet Autonomous Region over 1995-2017 by using the emergy synthesis method. The total agrochemical residue was decomposed into the intensity factor, the structure factor, the productivity factor, and the labour factor by using the Logarithmic Mean Divisia Index (LMDI) decomposition method. The change in TR could be divided into four time periods, i.e., a rapidly increasing period during 1995-1998, a stable period during 1999-2004, a slowly increasing period during 2005-2011, and a fluctuant period during 2012-2017. The study area had a mean TR intensity in area (TRA) of 3.31 x 10(14) sej/ha, which was only 38.21% of that in China; however, the annual growth rate of TRA in the study area was 2.93%, higher than the rate of 1.91% in China over 1995-2017. The study area had a mean TR intensity in production (TRP) of 4.06 x 10(10) sej/CNY (Chinese Yuan), which was 71.05% of that in China; however, the annual decreasing rate of TRP in the study area was 0.95%, lower than the rate of 1.98% in China over 1995-2017. All the LMDI decomposed factors contributed to the TR increase during 1995-1998; the intensity factor, the structure factor, and the labour factor contributed to the TR decrease during 1999-2004; the structure factor and the productivity factor contributed to the TR increase during 2005-2011; and only the productivity factor contributed to the TR increase during 2012-2017. Compared with the whole country, the study area has more potential to reduce TR by improving agrochemical use efficiency, strengthening the recovery of plastic film residue, increasing organic agricultural materials, raising the efficiency of agricultural production, and accelerating the transfer of rural labours to secondary and tertiary industries.
资助项目	Second Tibetan Plateau Scientific Expedition and Research[2019QZKK0600] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20040200]
WOS关键词	NONPOINT-SOURCE POLLUTION ; CROP PRODUCTION SYSTEM ; DECOMPOSITION ANALYSIS ; WATER-QUALITY ; LAND-USE ; SUSTAINABILITY ; EMISSIONS ; IMPACTS ; POLICY ; INDIA
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
语种	英语
出版者	MDPI
WOS记录号	WOS:000477051900148
资助机构	Second Tibetan Plateau Scientific Expedition and Research ; Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/58121]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Xiuhong
作者单位	1.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 101408, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xiuhong,Zhang, Yili. Emergy-Based Evaluation of Changes in Agrochemical Residues on the Qinghai-Tibet Plateau, China[J]. SUSTAINABILITY,2019,11(13):12.
APA	Wang, Xiuhong,&Zhang, Yili.(2019).Emergy-Based Evaluation of Changes in Agrochemical Residues on the Qinghai-Tibet Plateau, China.SUSTAINABILITY,11(13),12.
MLA	Wang, Xiuhong,et al."Emergy-Based Evaluation of Changes in Agrochemical Residues on the Qinghai-Tibet Plateau, China".SUSTAINABILITY 11.13(2019):12.