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套种南方红豆杉对杉木人工林土壤肥力的影响

应用与环境生物学报 2024年第2期30卷 344-352页

作者：赵洋余雯静何易蔓余春霞吴承祯李键福建农林大学林学院福州350002 福建省高校森林生态系统过程与经营重点实验室福州350002 武夷学院生态与资源工程学院南平354300 福建农林大学生命科学学院福州350002

探索营造异龄复层近自然混交林以期改善土壤肥力的经营措施,明晰套种对杉木纯林土壤肥力的影响趋势,对我国南方杉木低产低效林的改造具有重要意义.以福建闽北林区27年生杉木纯林、杉木(27年生)×南方红豆杉(7年生、8年生、9年生)混交林... 详细信息

探索营造异龄复层近自然混交林以期改善土壤肥力的经营措施,明晰套种对杉木纯林土壤肥力的影响趋势,对我国南方杉木低产低效林的改造具有重要意义.以福建闽北林区27年生杉木纯林、杉木(27年生)×南方红豆杉(7年生、8年生、9年生)混交林为研究对象,采用五点取样法选取4种林分样地的土壤,分成0-20 cm、20-40 cm、40-60 cm 3个土层,对各土层的土壤理化性质及酶活性数据进行分析,探究林龄和土层对土壤肥力的影响.结果表明:(1)酶活性随土层增加逐渐降低,脲酶、蔗糖酶活性随套种年限的增加逐年递减.(2)混交林土壤的物理性质均在第8年升至最高,其中土壤持水量和土壤孔隙度在第9年下降,而土壤密度在第9年上升.土壤的水解氮、有效磷含量在第7年、第8年上升,在第9年下降,而速效钾含量则在第7年锐减后逐年递增.(3)土壤脲酶活性与全氮、有效磷、全钾含量呈极显著正相关;蔗糖酶与有机质、水解氮及有效磷含量呈极显著正相关;磷酸酶与土壤持水能力呈极显著正相关(P第7年>第9年>CK.综上,混交林各营养指标均高于纯林,且混交林土壤理化性质和酶活性间相互作用明显,表明林下套种南方红豆杉可以显著改善杉木纯林的土壤理化性质,提升土壤肥力;结果可为营造异龄复层的近自然混交林,探索套种树种与原树种的养分分配利用关系以及养分补充年限提供参考.(图2表7参53)

关键词：混交林土壤肥力酶活性林龄差异

氮磷钾配方施肥对丹桂苗木叶片内源激素含量的影响

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西南林业大学学报（自然科学） 2024年第3期44卷 61-70页

作者：吴磊何易蔓余雯静颜晓艺吴承祯李键福建农林大学林学院福建福州350002 福建农林大学福建省高校森林生态系统过程与经营重点实验室福建福州350002 福建农林大学生命科学学院福建福州350002 武夷学院生态与资源工程学院福建南平354300

采用L9(3^(3))设置3因素(氮、磷和钾肥)3水平(氮单株施用量分别为0、5、10 g,磷单株施用量分别为0、2、4 g,钾单株施用量分别为0、3、6 g)正交实验,对‘浦城丹桂’幼苗间隔30 d进行2次氮磷钾配施处理,采用酶联免疫吸附分析法(ELISA)测定... 详细信息

采用L9(3^(3))设置3因素(氮、磷和钾肥)3水平(氮单株施用量分别为0、5、10 g,磷单株施用量分别为0、2、4 g,钾单株施用量分别为0、3、6 g)正交实验,对‘浦城丹桂’幼苗间隔30 d进行2次氮磷钾配施处理,采用酶联免疫吸附分析法(ELISA)测定第2次施肥后60、120、180、240 d后叶片4种激素[生长素(IAA)、脱落酸(ABA)、赤霉素(GA_(3))、玉米素核苷(ZR)]含量。结果表明:N_(5)P_(0)K_(3)处理可以显著提高IAA、ABA和ZR的含量,于施肥240 d达到最高值(分别为139.90、157.79、14.86 ng/g),相比CK分别提高了101.52%、36.79%、73.08%;N_(5)P_(2)K_(6)处理可以显著提高GA_(3)的含量,于施肥240 d达到最高值(13.57 ng/g),相比CK提高了97.71%;N_(5)P_(0)K_(3)处理显著提高ABA/GA_(3)和ZR/GA_(3)值,显著降低ABA/IAA和ZR/IAA值;N和K因素对IAA、GA_(3)、ABA和ZR含量的影响均有显著差异,P因素仅对GA_(3)含量的影响有显著差异;氮磷钾配施对丹桂苗木叶片内源激素含量及其之间的稳态有显著影响,综合方差和极差分析,得出提高叶片IAA、GA_(3)和ZR含量的最佳配施方案为N_(5)P_(2)K_(6),提高叶片ABA含量的最佳配施方案为N_(5)P_(0)K_(3)。

关键词：施肥丹桂叶片内源激素正交设计

Investigation of tropical coastal forest regeneration after farming and livestock grazing exclusion

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Journal of Forestry Research 2019年第5期30卷 1873-1884页

作者： Elly Josephat Ligate chengzhen wu Can Chen College of Life Sciences Fujian Agriculture and Forestry UniversityFuzhou 350002People’s Republic of China wuyi University Fuzhou 350002People’s Republic of China College of Forestry Fujian Agriculture and Forestry UniversityFuzhou 350002People’s Republic of China

It is critical to understand how forests regenerate after the exclusion of human induced disturbances because the regenerating species drive the renewal of resources and ecosystems,which in turn support human beings locally and *** study of forest regeneration was conducted in the tropical coastal forest ecosystems of Tanzania at Uzigua Forest Reserve(24,730 ha)in the Pwani *** collected data from adult trees in 47 sampling plots(25×25 m)randomly established in closed forest sites(control)and in sites disturbed by farming and livestock *** and seedling data were collected and analyzed in 2×2 m nested *** in the closed forest had higher mean basal area and volume for adult trees than those in sites disturbed by farming and livestock *** in sites disturbed by farming had the highest Shannon–Wiener index for seedlings and saplings,followed by closed forest and livestock grazed *** plots and farmed plots had higher Simpson’s index for seedlings and saplings than in grazed *** in farmed and livestock-grazed sites had a higher Simpson index for adult trees than in closed *** of seedlings and saplings was highest in closed forest sites,followed by farmed and livestock grazed *** disturbed by farming had higher equitability for adult trees than in livestock-grazed and closed ***,plots disturbed by farming and grazing had a higher importance value index for seedlings than in closed *** in closed forests had higher sapling importance values than in farmed and grazed ***,plots in closed forest had a higher importance value for adult trees than in farmed and grazed *** differences in tree species subcategories of regeneration across land-use indicates that farming and livestock grazing disturbances create heterogeneous microhabitats,which positively or negatively affects regeneration capacity of species after exclusion.

关键词： Coastal forests Disturbance Diversity Regeneration

Spatio-temporal variation of ecosystem service values adjusted by vegetation cover:a case study of wuyishan National Park Pilot,China

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Journal of Forestry Research 2022年第3期33卷 851-863页

作者： Sen Lin Xisheng Hu Hong Chen chengzhen wu Wei Hong College of Forestry Fujian Agriculture and Forestry UniversityFuzhou350002People’s Republic of China College of Transportation and Civil Engineering Fujian Agriculture and Forestry UniversityFuzhou350002People’s Republic of China College of Computer and Information Sciences Fujian Agriculture and Forestry UniversityFuzhou350002People’s Republic of China wuyi University Nanping354300People’s Republic of China

Ecosystem service values(ESV)are strongly influenced by the vegetation cover,which is heterogeneous across different vegetation *** develop a dynamic evaluation model of ESV for wuyishan National Park Pilot adjusted by the rate of inflation and the fractional vegetation cover,which is calculated by an enhanced vegetation index from 2000 to *** spatio-temporal variation of vegetation was also *** results demonstrated that:(1)the unit area of ecosystem service values adjusted by vegetation cover(ESVVC)shows a gradient of forest>tea plantation>grassland>cropland,and the major ecosystem services provided by forests include soil formation and conservation,climate regulation,and biodiversity maintenance;(2)the ESV_(VC) increased to 2.1 billion yuan(The reference rate announced by the People’s Bank of China is the US dollar to 6.42 Yuan per dollar.)from 2000 to *** and lower ESV_(VC) are predominant in the northwest and southeast region,*** addition,changes of ecological protection structures and human disturbances negatively affected vegetation cover,leading to a decreased ESVVC from 2000 to 2005 in the Jiuqu Stream Ecological Protection Area and the wuyishan National Scenic *** implementation of ecological protection policies from 2010 to 2018 enhanced the ESV_(VC) in the study area;and,(3)the ESVVC is highest in the southeast and 25°–35°area with altitudes of 800–1000 *** model can provide timely and helpful information of changes in ESV for use in ecological corridor design and ecological security monitoring.

关键词： Vegetation cover Ecosystem service values(ESV) Topographic factor Dynamic value model

Evaluation of tropical coastal land cover and land use changes and their impacts on ecosystem service values

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Ecosystem Health and Sustainability 2018年第8期4卷 14-30页

作者： Elly Josephat Ligate Can Chen chengzhen wu College of Life Sciences Fujian Agriculture and Forestry UniversityFuzhouFujianPR.China Department of Biosciences Sokoine University of AgricultureMorogoroTanzania College of Forestr Fyjian Agriculture and Forestry UniversityFuzhouP.R.China

Understanding about land cover and land use(LCLU)changes,as well as the associated impacts on ecosystem service values(ESV)is extremely important in the management of coastal ecosystems ***,this study assessed temporal LCLU changes,the underlying socio-economic drivers and dynamics of ESV in the coastal zone of *** LCLU data for 2000 and 2010 were from the Globe Land 30 mapping products at 30-meter spatial resolution developed by National Geomatics Center of China,while 2016 images were produced from Landsat *** of images was done from Landsat TM/ETM+for 2000,2010,and 2016 years complemented with MODIS and Normalized Difference Vegetation Index time series,and Chinese HJ *** categories and ecosystem service coefficients were used to compute ESV on each LCLU *** 2000 and 2016,farmland,shrub land,waterbody,and artificial surface expanded while forest,grazing land,and wetlands *** ESV increased on farmland,shrub land,and waterbody,while the decline was found on forest,grazing land,and *** ESV and the total population ratios declined from$80.4,63.8,and$46.0 million in 2000,2010,and 2016,*** positive correlation was on LCLU change and ESV,population and households in crop farming,livestock keeping,and bioenergy *** pressure and socioeconomic activities have amplified the degradation of the coastal *** not abetted,there is a danger of further impairments on these *** advise to regulate population and socioeconomic activities to avoid more negative impacts of coastal LCLU change.

关键词： Coastal ecosystems ecosystem service values land cover land use

Effects of Forest Gaps on Some Microclimate Variables in Castanopsis kawakamii Natural Forest

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Journal of Mountain Science 2012年第5期9卷 706-714页

作者： HE Zhongsheng LIU Jinfu wu Caiting ZHENG Shiqun HONG Wei SU Songjin wu chengzhen College of Forestry Fujian Agriculture and Forestry UniversityFuzhou 350002China Key Laboratory of Fujian Universiaes for Ecology and Resource Statistics Fuzhou 35o002China

The objective of this study was to understand the effects of forest gap and variations in different seasons, gap size, locations and diurnal variations on forest microclimate and soil water content. Spatial and temporal distribution features oi air temperature （TA）, soil temperature （Ts）, relative humidity （h） and soil water content （ψ） were measured in Castanopsis kawakamii natural forest gaps created by a severe typhoon or fallen dead trees. The results showed that：（1） the variations of TA, h, and Tsin four seasons were extremely significant. The variations of ψ in four seasons were extremely significant except for those between spring and summer. （a） The diurnal variations of TA and Tswere expressed with a single peak curve. The diurnal variations of h and ψ presented a high-low-high trend （3） The variations of TA, h, and Ts were extremely significant among the large, medium and small gaps in C. kawakamii natural forest. Medium gaps had the highest TA and the lowest h while small gaps were jusl contrary to medium gaps. The variations of T were extremely significant for large, medium and small gaps except those between the medium and large gaps （4） The TA, h, Ts and ψ were decreased from the gap center, canopy gap, expanded gap to understory. These results will help further our understanding of the abiotic and consequent biotic responses to gaps in the mid-subtropical broadleaved forests, which also provide a theoretical basis for the scientific management and population restoration of C. kawakamii natural forest.

关键词： TA, air temperature Ts, soiltemperature h, relative humidity ψ, soil watercontent

Spatial analysis of carbon storage density of mid-subtropical forests using geostatistics： a case study in Jiangle County, southeast China

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Acta Geochimica 2018年第1期37卷 90-101页

作者： Zhuo Lin Lin Chao chengzhen wu Wei Hong Tao Hong Xisheng Hu College of Forestry Fujian Agriculture and Forestry University Fuzhou Fujian Province China Fujian Institute of Scientific and Technological Information Fuzhou 350001 Fujian ProvinceChina Institute of Applied Ecology Chinese Academy of ScienceKey Laboratory of Forest Ecology and ManagementShenyang Liaoning Province China University of Chinese Academy of Science Beijing China Department of Ecology and Resource Engineering Wuyi UniversityNanping 354300 Fujian Province China College of Transportation and Civil Engineering Fujian Agriculture and Forestry University FuzhouFujian Province China

The mid-subtropical forest is one of the biggest sections of subtropical forest in China and plays a vital role in mitigating climate change by sequestering *** have examined carbon storage density(CSD) distribution in temperate forests. However, our knowledge of CSD in subtropical forests is limited. In this study, Jiangle County was selected as a study case to explore geographic variation in CSD. A spatial heterogeneity analysis by semivariogram revealed that CSD varied at less than the mesoscale(approximately 2000–3000 m). CSD distribution mapped using Kriging regression revealed an increasing trend in CSD from west to east of the study *** spatial autocorrelation analysis indicated that CSD was clustered at the village level(at 5% significance).Some areas with local spatial autocorrelation were detected by Anselin Local Moran's I and Getis-Ord G*. A geographically weighted regression model showed different impacts on the different areas for each determinant. Generally, diameter at breast height, tree height, and stand density had positive correlation with CSD in Jiangle County, but varied substantially in magnitude by *** contrast, coefficients of elevation and slope ranged from negative to positive. Based on these results, we propose certain measures to increase forest carbon storage,including increasing forested area, improving the quality of the current forests, and promoting reasonable forest management decisions and harvesting strategies. The established CSD model emphasizes the important role of midsubtropical forest in carbon sequestration and provides useful information for quantifying mid-subtropical forest carbon storage.

关键词： Carbon storage density Geostatistics Mid-subtropical forests Spatial autocorrelation Spatial heterogeneity

盐胁迫下接种内生真菌对短枝木麻黄幼苗生长的影响

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应用与环境生物学报 2024年第4期30卷 777-785页

作者：李冠军余雯静温昕怡苏亲桂吴承祯苏军李键福建农林大学林学院福州350002 森林生态系统过程与经营福建省高校重点实验室福州350002 福建省惠安赤湖国有防护林场福建惠安362100

为明晰盐分胁迫下内生真菌对宿主根系生长的影响,将一年生短枝木麻黄(Casuarina equisetifolia)幼苗栽植到不同盐度(质量分数为0、3‰、6‰、9‰)土壤中,以添加菌株培养基(CK)为对照,研究接种耐盐性菌株葡萄座腔菌Botryosphaeria Z1(Z1... 详细信息

为明晰盐分胁迫下内生真菌对宿主根系生长的影响,将一年生短枝木麻黄(Casuarina equisetifolia)幼苗栽植到不同盐度(质量分数为0、3‰、6‰、9‰)土壤中,以添加菌株培养基(CK)为对照,研究接种耐盐性菌株葡萄座腔菌Botryosphaeria Z1(Z1)、炭团菌Hypoxylon Y6(Y6)及其混合菌剂(Z1+Y6)对其宿主幼苗根系形态与活力、养分吸收以及苗高、地径和根冠比等的影响.结果表明:土壤盐胁迫下,木麻黄幼苗根系活力、根系总长(TRL)、总根表面积(TRSA)、总根体积(TRV)、总根直径(TRD)、根长密度(RLD)、根表面积密度(SAD)降低,根组织密度(RTD)增加;接菌处理显著提高了根系活力和生物量,同一菌株处理下根系形态和养分特征受土壤盐度变化影响较大;与CK相比,接菌处理显著提高了TRD以及3‰和6‰盐度下根系活力、全磷(TP)含量和9‰盐度下TRV、TRSA和RSD.此外,3‰盐度下,Z1菌处理的TRL、RLD、根全氮(TN)含量显著高于CK,碳磷比(C/P)显著低于CK.Z1+Y6菌处理还显著提高了3‰和6‰盐度下TRSA、TRV、SAD和根碳磷比(C/P).9‰盐度下,Z1和Z1+Y6菌处理下TP含量和根系活力同样显著高于CK.采用逐步回归建立了回归方程模型,发现RLD是影响苗高的主要因素,根系活力和TC含量是影响地径的主要因素;通径分析表明RTD、TRV、TP和TRD为影响生物量的主要因素,其中TRD的直接作用影响最大,为正向贡献.综上,盐胁迫下接菌处理能够影响幼苗根系形态和养分吸收以及生物量积累,耐盐性菌株可能是通过诱导宿主根系生长发育提高自身耐盐性,其中混合菌剂更有利于缓解盐害;结果可为深入开发木麻黄抗逆微生物制剂提供科学依据.(图3表3参57)

关键词：短枝木麻黄土壤盐度内生真菌养分含量根系形态通径分析

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浦城丹桂冠型因子与叶片性状的相关性分析

武夷学院学报 2024年第6期43卷 15-21页

作者：杜云爽胡金涛陈佳吴承祯李键福建农林大学林学院福建福州350002 武夷学院生态与资源工程学院福建武夷山354300

运用单因素方差分析、Pearson相关性分析、冗余分析和多元线性回归法对浦城丹桂(Osmanthus fragrans,‘Pucheng Dan’)叶片功能性状指标与冠型因子的相关性进行研究。结果表明:着枝角和分枝率是与叶片功能性状相关性较强的两种冠型因子... 详细信息

运用单因素方差分析、Pearson相关性分析、冗余分析和多元线性回归法对浦城丹桂(Osmanthus fragrans,‘Pucheng Dan’)叶片功能性状指标与冠型因子的相关性进行研究。结果表明:着枝角和分枝率是与叶片功能性状相关性较强的两种冠型因子。着枝角与叶长、叶宽、叶厚、叶面积、叶周长、叶干重和叶鲜重都表现出正相关;分枝率和下级枝数量都与叶长、叶宽、叶面积、叶干重和叶鲜重表现出负相关。树冠圆满度与枝条长度的提高有助于叶片生长,胸径与比叶面积呈负相关,其他冠型因子与叶片功能性状相关性较小。结果表明:浦城丹桂叶片性状受枝条分布情况的影响,一级枝着枝角、下级枝数量与分枝率是与叶片相关性较强的冠型因子,研究结果可为优化浦城丹桂冠型结构提供依据和参考。

关键词：浦城丹桂比叶面积冗余分析功能性状多元线性回归