气候变化领域集成服务门户(CCPortal): Soil moisture decline in China's monsoon loess critical zone: More a result of land- use conversion than climate change

CCPortal

DOI	10.1073/pnas.2322127121
	Soil moisture decline in China's monsoon loess critical zone: More a result of land- use conversion than climate change
	Wang, Yunqiang; Hu, Wei; Sun, Hui; Zhao, Yali; Zhang, Pingping; Li, Zimin; Zhou, Zixuan; Tong, Yongping; Liu, Shaozhen; Zhou, Jingxiong; Huang, Mingbin; Jia, Xiaoxu; Clothier, Brent; Shao, Ming'an; Zhou, Weijian; An, Zhisheng
发表日期	2024
ISSN	0027-8424
EISSN	1091-6490
起始页码	121
结束页码	15
卷号	121 期号:15
英文摘要	Soil moisture (SM) is essential for sustaining services from Earth's critical zone, a thinliving skin spanning from the canopy to groundwater. In the Anthropocene epoch, intensive afforestation has remarkably contributed to global greening and certain service improvements, often at the cost of reduced SM. However, attributing the response of SM in deep soil to such human activities is a great challenge because of the scarcity of long - term observations. Here, we present a 37 y (1985 to 2021) analysis of SM dynamics at two scales across China's monsoon loess critical zone. Site - scale data indicate that land - use conversion from arable cropland to forest/grassland caused an 18% increase in SM deficit over 0 to 18 m depth (P < 0.01). Importantly, this SM deficit intensified over time, despite limited climate change influence. Across the Loess Plateau, SM storage in 0 to 10 m layer exhibited a significant decreasing trend from 1985 to 2021, with a turning point in 1999 when starting afforestation. Compared with SM storage before 1999, the relative contributions of climate change and afforestation to SM decline after 1999 were -8% and 108%, respectively. This emphasizes the pronounced impacts of intensifying land - use conversions as the principal catalyst of SM decline. Such a decline shifts 18% of total area into an at - risk status, mainly in the semiarid region, thereby threatening SM security. To mitigate this risk, future land management policies should acknowledge the crucial role of intensifying land - use conversions and their interplay with climate change. This is imperative to ensure SM security and sustain critical zone services.
英文关键词	water; afforestation; deep soil; the Loess Plateau; monsoon climate
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001207680000010
来源期刊	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/308561
作者单位	Chinese Academy of Sciences; Institute of Earth Environment, CAS; Xi'an Jiaotong University; New Zealand Institute for Plant & Food Research Ltd; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Ministry of Water Resources; Chinese Academy of Sciences; Institute of Soil & Water Conservation (ISWC), CAS; Chinese Academy of Sciences; Institute of Geographic Sciences & Natural Resources Research, CAS; New Zealand Institute for Plant & Food Research Ltd; Beijing Normal University
推荐引用方式 GB/T 7714	Wang, Yunqiang,Hu, Wei,Sun, Hui,et al. Soil moisture decline in China's monsoon loess critical zone: More a result of land- use conversion than climate change[J],2024,121(15).
APA	Wang, Yunqiang.,Hu, Wei.,Sun, Hui.,Zhao, Yali.,Zhang, Pingping.,...&An, Zhisheng.(2024).Soil moisture decline in China's monsoon loess critical zone: More a result of land- use conversion than climate change.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,121(15).
MLA	Wang, Yunqiang,et al."Soil moisture decline in China's monsoon loess critical zone: More a result of land- use conversion than climate change".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 121.15(2024).