| 黄耀思，黄承标，张晓声，等.石漠化强度对桉树人工林生长的影响[J].广东农业科学,2015,42(7):-36 |
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石漠化强度对桉树人工林生长的影响 |
| Impact of karst rocky desertification on growth of eucalyptus plantation |
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| DOI： |
| 中文关键词: ：石漠化强度 桉树人工林 桂西北 |
| 英文关键词: karst rocky desertification Eucalyptus plantation Northwest Guangxi |
| 基金项目: |
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| 摘要点击次数: 1558 |
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| 中文摘要: |
| ：在桂西北选择两种典型石漠化等级（即…S1…为中度级，S2…为极重度级）的石山种植桉树，在营林…4…年
后对桉树人工林植被进行调查。结果表明：（1）S1、S2…的造林保存率分别为…29.5%、21.5%，前者是后者的1.37 倍。
（2）S1、S2 的平均胸径分别为9.01、6.72…cm，前者是后者的1.34 倍；平均树高分别为…8.41、6.43…m，前者是后者的…
1.31…倍；平均蓄积量分别为…17.65、5.95…m3
/hm2
，前者是后者的…2.97…倍。（3）S1、S2…的林地基石裸露率分别为…4.17%、
14.11%，前者占后者的…29.6%。说明在极强度石漠化条件下种植桉树的保存率及各项生长量指标都极显著低于中
度石漠化环境，通过治理后，使原来石漠化强度分别下降在轻度级以内。 |
| 英文摘要: |
| To better understand the growth of Eucalyptus on the land of different grades of rocky desertification in
karst region，and explore the method for the revegetation in karst rocky desertification land，two grades（S1：moderate
desertification，S2：severe desertification）of rocky desertification land in Northwest Guangxi were selected for planting
Eucalyptus. On the desertification land，the planting bank was built by brick，new soil from other site was filled in the
bank before planting tree. The survival rate and growth of Eucalyptus were investigated in the 4th year of forestation. The
results showed that，The survival rates of Eucalyptus in land S1 and S2 were 29.5% and 21.5%，respectively，the former
was 1.37 times of the latter.The average diameter at breast height（DBH），average height， stock volume of Eucalyptus
in S1 and S2 were 9.01 and 6.72 cm，8.41 and 6.43 m，17.65 and 5.95 m3/hm2，respectively，the former were 1.34，1.31 and
2.97 times of the latter，respectively. Bedrock bare rates in S1 and S2 were 4.17% and 14.11%. The results indicated that，
the suruival rate and grouth index of Eucalyptus in severe rocky desertification were significantly lower than those in the
moderate rocky desertification environment. At the same time，by treatment，the grade of rocky desertification decreased
to low-grade. |
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