Detecting and attributing the impact of human activities on grassland aboveground biomass in China's Loess Plateau

被引:0
|
作者
Wei, Jian-Zhou [1 ]
Pei, Jiu-Ying [2 ]
Fang, Chao [3 ]
Sardans, Jordi [4 ,5 ]
Penuelas, Josep [4 ,5 ]
Huang, Fu-Qiang [2 ]
Zhang, Xu-Long [2 ]
Zheng, Kai [6 ]
机构
[1] Gansu Agr Univ, Coll Sci, Ctr Quantitat Biol, Lanzhou 730070, Peoples R China
[2] Lanzhou Univ, Coll Ecol, State Key Lab Herbage Improvement & Grassland Agro, 222 South Tianshui Rd, Lanzhou 730000, Peoples R China
[3] Nanjing Univ Informat Sci & Technol, Sch Ecol & Appl Meteorol, China Meteorol Adm ECSS CMA, Key Lab Ecosyst Carbon Source & Sink, Nanjing 210044, Peoples R China
[4] CREAF CSIC UAB, CSIC, Global Ecol Unit, E08193, Catalonia, Spain
[5] CREAF, E-08913 Cerdanyola Del Valles, Catalonia, Spain
[6] Qinghai Univ, State Key Lab Plateau Ecol & Agr, Xining 810016, Peoples R China
基金
中国国家自然科学基金;
关键词
Aboveground biomass; Human activities; Effect magnitude; Spatiotemporal attributions; Grasslands; Loess Plateau; NET PRIMARY PRODUCTION; CLIMATE-CHANGE; HUMAN APPROPRIATION; ECOSYSTEM SERVICES; ALPINE GRASSLAND; TRADE-OFFS; SOIL; VEGETATION; DEGRADATION; LIVESTOCK;
D O I
10.1016/j.jenvman.2024.123247
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Human activities significantly influence grassland ecosystem functions, particularly plant biomass. However, the direction and magnitude of these effects remain insufficiently explored. Herein, we quantitively assessed both the positive and negative effects of various human activities on grassland aboveground biomass (AGB) in China's Loess Plateau from 2000 to 2022. The results indicated that the magnitudes of positive effects increased by 0.29 g m(-2) per year, whereas the negative effects decreased by 0.31 g m(-2) per year. Spatially, 32 % of the grasslands experienced significant positive effects, whereas the rest grasslands faced negative effects. Notably, only 20 % of the areas with negative effects showed worsening trends mainly due to ecological restoration, sustainable agriculture, and population migration. Agricultural production activities and population changes emerged as dominant factors, with some activities, like livestock farming, exhibiting dual effects (i.e., positive and negative effects) on AGB. These findings underscore the complexity of human activities in affecting the grassland production function and highlight the necessity for balanced management strategies to sustain grassland productivity and resilience.
引用
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页数:11
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