Changes of Vegetation and Soil Nutrient in Different Forests after Logging Banin Tropical Coastal Area of Hainan Island

doi:10.3969/j.issn.1000-2561.2020.06.028

Abstract

Abstract:

The changes of vegetation structures and soil nutrients in coastal forests are important to understand the forest ecological process and restoration of saline-alkali land, and for the biodiversity conservation and ecosystem service function enhancement. The vegetation and soil nutrient characteristics of three types of plantations (Acacia auriculiformis, Casuarina equisetifolia and Eucalyptus robusta), secondary forests and mixed forests (control) banned from cutting in low altitude coastal areas of northern Hainan Island in 1994 were studied using the typical plot method. 57 species belonging to 54 genera and 34 families were investigated. The species composition of the secondary forest and mixed forest communities was richer than that of the pure forest, and no shrubs grew in the C. equisetifolia plantation. In addition to the secondary forests, other forest types had the most abundant species in herblayer. The soil of the five forest plots was acidic, and the content of organic matter and total N in the Eucalyptus robusta plantation, secondary forest and mixed forest was the highest, but the content of available P in the A. auriculiformis and C. equisetifolia plantation was significantly higher than that of the others (P<0.05). Except the mixed forest, available K was 11.27 mg/kg, and that in the other forest types was very low or even undetected. There existed positive correlation between organic matter in the secondary forest, available K in the mixed forests and species compositions. There existed positive correlation in total nitrogen, tree age and height. Therefore, soil nutrients increased with the increase of cutting time. The E. robusta forest had higher organic matter and nitrogen content, but the C. equisetifolia and A. auriculiformis forests had higher phosphorus content, while the secondary mixed forest had higher potassium content.

Key words: forest type, vegetation characteristics, soil nutrients, coastal terrace

CLC Number:

S714

XUE Yang,LIANG Juzhi,SU Shaofeng,YAO Xiaolan,WANG Xiaoyan,LIN Zhipan,XUE Yanwen. Changes of Vegetation and Soil Nutrient in Different Forests after Logging Banin Tropical Coastal Area of Hainan Island[J]. Chinese Journal of Tropical Crops, 2020, 41(6): 1273-1278.

Figures/Tables 4

References 13

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森林类型 Forest types	地点Places	经纬度 Longitude and latitude	树龄 Tree age/a	平均胸径 Average tree chest diameter/cm	平均树高 Average tree height/m	土壤类型 Soil type
I	文昌文教镇	110°53′19″ E;19°42′42″ N	6	5.1	8.2	砖红壤
II	文昌岛东昌洒作业区	110°58′34″ E;19°44′23″ N	13	4.2	15.6	滨海沙土
III	文昌岛东昌洒作业区	110°57′43″ E;19°44′56″ N	30	11.4	18.9	浅海沉积土
IV	文昌东郊镇	110°51′16″ E;19°34′58″ N	35	21.5	20.6	浅海沉积土
V	文昌岛东昌洒作业区	110°57′34″ E;19°43′58″ N	21	14.3	16.3	滨海沙土

森林类型 Forest types	地点Places	经纬度 Longitude and latitude	树龄 Tree age/a	平均胸径 Average tree chest diameter/cm	平均树高 Average tree height/m	土壤类型 Soil type
I	文昌文教镇	110°53′19″ E;19°42′42″ N	6	5.1	8.2	砖红壤
II	文昌岛东昌洒作业区	110°58′34″ E;19°44′23″ N	13	4.2	15.6	滨海沙土
III	文昌岛东昌洒作业区	110°57′43″ E;19°44′56″ N	30	11.4	18.9	浅海沉积土
IV	文昌东郊镇	110°51′16″ E;19°34′58″ N	35	21.5	20.6	浅海沉积土
V	文昌岛东昌洒作业区	110°57′34″ E;19°43′58″ N	21	14.3	16.3	滨海沙土

项目 Item	I	II	III	IV	V
pH	5.66±0.16^a	5.44±0.11^ab	4.97±0.48^b	5.01±0.25^b	4.98±0.15^b
有机质/(g·kg^-1)	0.20±0.07^b	0.16±0.02^b	2.44±1.06^b	4.31±1.81^a	4.30±2.44^a
全氮/(g·kg^-1)	0.05±0.01^b	0.05±0.02^b	0.31±0.15^a	0.23±0.05^a	0.26±0.07^a
有效磷/(mg·kg^-1)	22.50±13.10^a	23.54±14.47^a	2.53±0.38^b	5.17±0.93^b	3.96±2.39^b
速效钾/(mg·kg^-1)	0	0	0	0.28±0.25^b	11.27±1.88^a

项目 Item	I	II	III	IV	V
pH	5.66±0.16^a	5.44±0.11^ab	4.97±0.48^b	5.01±0.25^b	4.98±0.15^b
有机质/(g·kg^-1)	0.20±0.07^b	0.16±0.02^b	2.44±1.06^b	4.31±1.81^a	4.30±2.44^a
全氮/(g·kg^-1)	0.05±0.01^b	0.05±0.02^b	0.31±0.15^a	0.23±0.05^a	0.26±0.07^a
有效磷/(mg·kg^-1)	22.50±13.10^a	23.54±14.47^a	2.53±0.38^b	5.17±0.93^b	3.96±2.39^b
速效钾/(mg·kg^-1)	0	0	0	0.28±0.25^b	11.27±1.88^a

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