دورية أكاديمية
Initial effects of crop tree release and traditional thinning on productivity and carbon storage of Cunninghamia lanceolata plantation
العنوان: | Initial effects of crop tree release and traditional thinning on productivity and carbon storage of Cunninghamia lanceolata plantation |
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المؤلفون: | Xianhua Zou, Ziyang Zheng, Chutong Yang, Mengjia Yang, Zhijuan Guo, Yongxin Wang, Zhijun Huang, Liqin Zhu, Liqing Xu, Kaimin Lin |
المصدر: | Frontiers in Forests and Global Change, Vol 6 (2023) |
بيانات النشر: | Frontiers Media S.A., 2023. |
سنة النشر: | 2023 |
المجموعة: | LCC:Forestry LCC:Environmental sciences |
مصطلحات موضوعية: | tending and thinning, crop tree release, traditional thinning, individual tree growth, carbon storage, Forestry, SD1-669.5, Environmental sciences, GE1-350 |
الوصف: | IntroductionThinning has a crucial impact on the carbon dynamics of forest ecosystems. The inconsistencies about the effects of thinning on carbon stocks in previous studies may be attributed to different thinning plans that designed to achieve different management goals.MethodsThis study focuses on Cunninghamia lanceolata as the research object and investigates three treatments: crop tree release (CTR), traditional thinning (TM), and no thinning (CK). The different thinning methods (CTR and TM) had different management objectives and selection of crop trees principle, although with the same thinning density. The short-term effects of CTR and TM treatments on tree growth and carbon storage in Cunninghamia lanceolata plantations were analyzed and compared.ResultsBoth CTR and TM were beneficial to the growth of individual trees when compared to CK, with CTR being more beneficial. The average annual increments in DBH, TH, and volume of a single tree in CTR increased by 62.50%, 61.29%, and 74.07% higher than CK, respectively. So CTR was the best for large-diameter timber yield, which was 77.40% higher than CK, whereas CK had a higher proportion of medium- and small-diameter timber yield. However, CTR had an insignificant short-term boosting effect on stand volume, and its timber volume was considerably higher than that in TM treatment, but not as high as in CK. Therefore, the carbon storage in the tree layer, litter, and different soil layers under different treatments showed that CTR and TM were significantly lower than CK. And the total carbon storage in the three treatments showed that CK > CTR > TM, with CTR showing a 13.07% higher than TM. On the contrary, thinning could effectively improve understory vegetation carbon storage. The carbon storage in the herb and shrub layers under CTR increased by 47.77% and 183.44%, respectively, compared to CK.DiscussionAlthough thinning could significantly promote the growth of individual trees and understory vegetation, their total carbon storage in the short term was lower than that in CK. CTR showed a higher carbon sequestration and sink capacity than TM. It suggests that CTR, as a special type of thinning method, should be encouraged to selected because it has the chance to achieve a faster carbon sequestration rate than traditional thinning and it also can produce higher-quality timber. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 2624-893X |
Relation: | https://www.frontiersin.org/articles/10.3389/ffgc.2023.1288613/full; https://doaj.org/toc/2624-893X |
DOI: | 10.3389/ffgc.2023.1288613 |
URL الوصول: | https://doaj.org/article/825dbd8fc6b44dd0b6b76b8fd29755c5 |
رقم الأكسشن: | edsdoj.825dbd8fc6b44dd0b6b76b8fd29755c5 |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 2624893X |
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DOI: | 10.3389/ffgc.2023.1288613 |