文献类型：期刊文献

英文题名：Thinning counteracts drought-induced reduction in soil interception capacity during heavy rainfall in a larch plantation

作者：Ma, Jiao[1] Sun, Xiaomei[1] Wu, Chunyan[1] Chen, Dongsheng[1] Wang, Hongxing[2] Ran, Xin[1] Zhang, Shougong[1]

第一作者：Ma, Jiao

通信作者：Zhang, SG[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding & Cultivat Natl Forestry, Beijing 100091, Peoples R China;[2]Jilin Agr Univ, Coll Forestry & Grassland, Changchun 130118, Peoples R China

年份：2026

卷号：15

外文期刊名：FOREST ECOSYSTEMS

收录：;Scopus(收录号：2-s2.0-105024842865);WOS:【SCI-EXPANDED(收录号:WOS:001677401200001)】；

基金：This study was supported by the National Key Research and Devel-opment Program of China (No. 2023YFD2200801) .

语种：英文

外文关键词：Contribution of rainfall to soil water (CRSW); Precipitation reduction; Thinning; Hydrogen stable isotope; Soil-water conservation; Climate change

摘要：Forest management and climate change critically shape forest ecosystem functions. The efficacy of thinning in mitigating drought impacts on forest soil-water conservation remains uncertain. In this study, hydrogen stable isotopes were used to quantify the contribution of rainfall to soil water (CRSW) under a four-year experiment combining precipitation reduction (-30%), thinning (45% of trees removed), and their interaction in a Larix kaempferi plantation. We found that prolonged precipitation reduction significantly reduced the contribution of heavy rainfall to soil water (CHRSW) by 8.15%-9.88%. However, thinning alone or combined with precipitation reduction significantly increased CHRSW by 11.47%-13.27% and 6.52%-8.77%, respectively. Additionally, the influence of canopy, understory vegetation, and litter on CHRSW declined with soil depth, while soil and root properties persistently affected CHRSW across 0-40 cm depths. Crucially, the positive effects of thinning on these variables consistently outweighed the negative impacts of precipitation reduction, resulting in a net increase in CHRSW. Therefore, thinning effectively mitigates drought-associated declines in soil interception capacity during heavy rainfall, indicating its potential as a climate-adaptive management strategy for sustaining soil-water conservation functions in managed forests.