气候变化领域集成服务门户(CCPortal): Assessing the impact of land conversion and management measures on the net primary productivity in the Bailong River Basin, in China

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DOI	10.1016/j.catena.2021.105672
	Assessing the impact of land conversion and management measures on the net primary productivity in the Bailong River Basin, in China
	Zhou, Yanyan; Yue, Dongxia; Guo, Jianjun; Chao, Zengzu; Meng, Xingmin
通讯作者	Yue, DX (通讯作者)，Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0341-8162
EISSN	1872-6887
卷号	207
英文摘要	To cope with and reduce environmental degradation, the Chinese government initiated a series of new, national-scale policies and ecological projects in the late 1990s and early 2000s. However, under different political systems, the impact of such restoration measures on vegetation productivity in the Bailong River Basin (BRB) in China is unclear. Here, based on the analysis of the LUCC from 2000 to 2019, we quantitatively distinguished the contribution of climate change and human activities (including land conversion and management measures) to the change of vegetation net primary productivity (NPP). The results showed that from 2000 to 2019, the area of cultivated land decreased by 405.1 km(2), which was mainly attributed to the conversion to forestland and grassland. The average NPP of BRB increased at a rate of 0.0063 kg C m(2) a(-1). We found that there were two distinct growth periods, and the growth rate of NPP after 2012 (Period 2) was higher than that before 2012 (Period 1). Compared with the total amount of NPP in Period 1, that in Period 2 increased by 1,323.001 Gg C a(-1,) of which human activities and climate change accounted for 70.16% and 29.84%, respectively. The land conversion increased the NPP by 219.115 Gg C.a(-1), whereas management measures increased the NPP by 709.09 Gg C.a(-1) in the otherwise unmodified land. In Period 1, climate change had a major positive impact on the increase in NPP. In Period 2, after the implementation of the ecological projects, human activities played a major positive role in the increase in NPP. Therefore, actively implemented ecologically reasonable management measures in the study area is the main driving force for increasing NPP.
关键词	CLIMATE-CHANGE ANTHROPOGENIC ACTIVITIES VEGETATION DYNAMICS DRIVING FORCES LOESS PLATEAU SOURCE REGION GRASSLAND DESERTIFICATION PROGRAM GRAIN
英文关键词	Net primary productivity; Land use and cover change; Human activities; Bailong River Basin
语种	英语
WOS研究方向	Geology ; Agriculture ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS记录号	WOS:000703268900090
来源期刊	CATENA
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254430
作者单位	[Zhou, Yanyan; Yue, Dongxia; Chao, Zengzu] Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China; [Guo, Jianjun] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China; [Meng, Xingmin] Lanzhou Univ, Sch Earth Sci, MOE Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China; [Meng, Xingmin] Lanzhou Univ, Technol & Innovat Ctr Environm Geol & Geohazards, Sch Earth Sci, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Yanyan,Yue, Dongxia,Guo, Jianjun,et al. Assessing the impact of land conversion and management measures on the net primary productivity in the Bailong River Basin, in China[J]. 中国科学院西北生态环境资源研究院,2021,207.
APA	Zhou, Yanyan,Yue, Dongxia,Guo, Jianjun,Chao, Zengzu,&Meng, Xingmin.(2021).Assessing the impact of land conversion and management measures on the net primary productivity in the Bailong River Basin, in China.CATENA,207.
MLA	Zhou, Yanyan,et al."Assessing the impact of land conversion and management measures on the net primary productivity in the Bailong River Basin, in China".CATENA 207(2021).