揭示中国植树造林控制水土流失的最佳策略：荟萃分析

IF 5.4 1区农林科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Catena Pub Date : 2024-10-23 DOI:10.1016/j.catena.2024.108484

Yibo Zhang , Wanlu Liu , Ziwei Chen , Shaodong Qu , Fengxian Huang , Jiangbo Gao

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引用次数: 0

摘要

由于人们希望提供多种生态系统服务，包括控制土壤侵蚀，植树造林在全球范围内不断增加。然而，如何植树才能更有效地缓解土壤侵蚀仍缺乏系统的研究。因此，我们对来自 80 项研究的 412 个配对观测数据进行了荟萃分析，以严格比较中国不同植树造林方式对土壤侵蚀控制的影响。结果表明，植树造林的树龄和地被类型是影响植树造林减少径流和泥沙效率的主要因素。成熟植树造林（20 年）在减少径流（80.9%）和泥沙（97.2%）方面的效率高于年轻植树造林（10 年）。有草地覆盖的植树造林在减少径流方面的效益为 70%，而无地面覆盖的植树造林的能力并不显著。此外，在坡度大、年平均降水量低、土壤含沙量高和土壤有机碳含量低的地区植树造林对控制土壤侵蚀有更好的效果。黄土高原和喀斯特地区是中国水土流失最严重的地区，其环境条件各不相同。本文进一步揭示了这两个地区有针对性的植树造林策略：喀斯特地区植树造林应注重树种的石生性和耐旱性，黄土高原地区植树造林应考虑耗水量和水土流失控制之间的权衡。

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Revealing the optimal strategy for tree plantations on controlling soil erosion in China: A meta-analysis

Tree plantation has increased globally, driven by a desire to supply multiple ecosystem services including soil erosion control. However, how to plant trees can more effectively mitigate soil erosion still lacks systematic investigation. Therefore, we conducted a meta-analysis consisting of 412 paired observations from 80 studies to rigorously compare the effects of tree plantations on soil erosion control across different plantation approaches in China. The results showed that plantation age and ground cover type were the primary factors influencing the efficiency of tree plantations on runoff and sediment reduction. Mature plantations (>20 years) showed more efficiency in runoff (80.9 %) and sediment (97.2 %) reduction than young plantations (<10 years). The benefit of tree plantations with grass cover on runoff reduction was 70 %, while the capacity of plantations without ground cover was not significant. In addition, tree plantations in areas with steep slope, low mean annual precipitation, high soil sand content, and low soil organic carbon had better benefits on soil erosion control. Loess Plateau and Karst areas suffer the most severe water erosion in China, with distinct environmental conditions. This paper further revealed the targeted plantation strategy for these two regions: tree plantations in Karst areas should focus on the lithophyticity and drought tolerance of tree species, in the Loess Plateau should consider the trade-off between water consumption and soil erosion control.

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来源期刊

Catena 环境科学-地球科学综合

CiteScore

10.50

自引率

9.70%

发文量

816

审稿时长

54 days

期刊介绍： Catena publishes papers describing original field and laboratory investigations and reviews on geoecology and landscape evolution with emphasis on interdisciplinary aspects of soil science, hydrology and geomorphology. It aims to disseminate new knowledge and foster better understanding of the physical environment, of evolutionary sequences that have resulted in past and current landscapes, and of the natural processes that are likely to determine the fate of our terrestrial environment. Papers within any one of the above topics are welcome provided they are of sufficiently wide interest and relevance.