Size-Dependent Patterns of Seed Rain in Gaps in Temperate Secondary Forests, Northeast China
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Site
2.2. Sampling Points Setting
2.3. Seed Rain Investigation
2.4. Soil Seed Bank Sampling
2.5. Data Analysis
3. Results
3.1. Spatiotemporal Variation in the Seed Rain and Its Relationship with Gap Size
3.2. Relationship Between Seed Rain and Soil Seed Bank
4. Discussion
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Gap Size Category | Forest Gap | Area (m2) | Altitude (m) | Slope (°) | Height of Gap Border Trees (m) | DBH of Gap Border Trees (cm) | Vegetation Composition of Gap Border Trees (%) | Quadrats Along the South-North Direction of Gap | Quadrats Along the East-West Direction of Gap | Canopy Openness (%) | |
---|---|---|---|---|---|---|---|---|---|---|---|
In Gap | Under Canopy | ||||||||||
Large gaps | G1 | 346.5 | 756 | 16 | 16.33 ± 0.65 | 14.36 ± 1.16 | Fraxinus rhynchophylla (43), Acer mono (20), Quercus mongolica (18) | 11 | 10 | 24 | 17 |
G2 | 323.3 | 760 | 15 | 17.58 ± 0.45 | 16.17 ± 1.98 | Acer mono (37), Fraxinus rhynchophylla (20), Quercus mongolica (18) | 11 | 10 | 22 | 16 | |
G3 | 286.2 | 743 | 15 | 16.35 ± 1.21 | 18.13 ± 1.32 | Acer mono (35), Quercus mongolica (25), Juglans mandshurica Maxim. (15) | 11 | 10 | 21 | 18 | |
Medium gaps | G4 | 196.9 | 752 | 17 | 16.47 ± 1.22 | 13.24 ± 1.75 | Quercus mongolica (56), Fraxinus rhynchophylla (21), Acer mono (15) | 9 | 8 | 19 | 15 |
G5 | 176.8 | 741 | 17 | 17.55 ± 1.07 | 12.54 ± 1.71 | Acer mono (34), Fraxinus rhynchophylla (30), Quercus mongolica (16) | 9 | 8 | 19 | 16 | |
G6 | 162.3 | 758 | 18 | 16.75 ± 0.63 | 11.77 ± 1.09 | Fraxinus rhynchophylla (31), Acer mono (36), Juglans mandshurica (15) | 9 | 8 | 17 | 13 | |
G7 | 150.6 | 753 | 19 | 17.01 ± 1.34 | 12.34 ± 2.65 | Acer mono (44), Fraxinus rhynchophylla (21), Tilia tuan Szyszyl. (15) | 9 | 8 | 16 | 13 | |
Small gaps | G8 | 121.8 | 748 | 16 | 15.73 ± 0.98 | 12.13 ± 1.78 | Fraxinus rhynchophylla (45), Acer mono (24), Juglans mandshurica (15) | 7 | 6 | 15 | 12 |
G9 | 98.7 | 755 | 16 | 16.15 ± 1.16 | 10.62 ± 1.39 | Acer mono (47), Fraxinus rhynchophylla (25), Ulmus laciniata (Trautv.) Mayr (15) | 7 | 6 | 14 | 11 | |
G10 | 51.5 | 743 | 18 | 15.58 ± 0.71 | 10.32 ± 1.77 | Quercus mongolica (36), Acer mono (26), Fraxinus rhynchophylla (15) | 7 | 6 | 13 | 11 |
Species | Family | Life Form | Propagule Type | Appendages | Abundance Class | Common Dispersal Type for the Primary Dispersal | Viability Rate of Seeds after 1-year Burial |
---|---|---|---|---|---|---|---|
Quercus mongolica | Fagaceae | Tree | Nut | None | Rare | Gravity | - |
Bothrocaryum controversum (Hemsl.) Pojark. | Cornaceae | Tree | Drupe | None | Rare | Gravity | - |
Fraxinus rhynchophylla | Oleaceae | Tree | Samara | Wing | Rare | Wind | - |
Fraxinus mandschurica Rupr. | Oleaceae | Tree | Samara | Wing | Common | Wind | 10% [40] |
Juglans mandshurica | Juglandaceae | Tree | Nut | None | Common | Gravity | 82% [40] |
Acer mono | Aceraceae | Tree | Samara | Wing | Common | Wind | - |
Acer pseudosieboldianum (Pax) Kom. | Aceraceae | Tree | Samara | Wing | Rare | Wind | - |
Phellodendron amurense Rupr. | Rutaceae | Tree | Seed | None | Rare | Gravity | - |
Betula costata Trautv. | Betulaceae | Tree | Nutlet | Wing | Common | Wind | - |
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Yan, Q.; Gang, Q.; Zhu, J. Size-Dependent Patterns of Seed Rain in Gaps in Temperate Secondary Forests, Northeast China. Forests 2019, 10, 123. https://doi.org/10.3390/f10020123
Yan Q, Gang Q, Zhu J. Size-Dependent Patterns of Seed Rain in Gaps in Temperate Secondary Forests, Northeast China. Forests. 2019; 10(2):123. https://doi.org/10.3390/f10020123
Chicago/Turabian StyleYan, Qiaoling, Qun Gang, and Jiaojun Zhu. 2019. "Size-Dependent Patterns of Seed Rain in Gaps in Temperate Secondary Forests, Northeast China" Forests 10, no. 2: 123. https://doi.org/10.3390/f10020123
APA StyleYan, Q., Gang, Q., & Zhu, J. (2019). Size-Dependent Patterns of Seed Rain in Gaps in Temperate Secondary Forests, Northeast China. Forests, 10(2), 123. https://doi.org/10.3390/f10020123