Studies on spatial heterogeneity of soil respiration in a conifer-broadleaf mixed forest in Pangquangou Nature Reserve Area

2015 ◽  
Vol 35 (24) ◽  
Author(s):  
严俊霞 YAN Junxia ◽  
李洪建 LI Hongjian ◽  
李君剑 LI Junjian
Keyword(s):  
Soil Respiration ◽  
Spatial Heterogeneity ◽  
Nature Reserve ◽  
Mixed Forest ◽  
Reserve Area

The influence of tree species on small scale spatial heterogeneity of soil respiration in a temperate mixed forest

2017 ◽  
Vol 590-591 ◽  
pp. 242-248 ◽  
Author(s):  
Weibin Li ◽  
Zhen Bai ◽  
Changjie Jin ◽  
Xinzhong Zhang ◽  
Dexin Guan ◽  
...  
Keyword(s):  
Soil Respiration ◽  
Spatial Heterogeneity ◽  
Tree Species ◽  
Mixed Forest ◽  
Small Scale ◽  
Temperate Mixed Forest

scholarly journals Spatial Heterogeneity of Soil Respiration Response to Precipitation Pulse in a Temperate Mixed Forest in Central China

2017 ◽  
Vol 1 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Yanchun Liu ◽  
Qing Shang ◽  
Zhongwei Wang ◽  
Kesheng Zhang
Keyword(s):  
Soil Respiration ◽  
Spatial Heterogeneity ◽  
Carbon Cycling ◽  
Biological Activities ◽  
Mixed Forest ◽  
Central China ◽  
Terrestrial Carbon ◽  
Size Classes ◽  
The Difference ◽  
Precipitation Pulse

Water availability is one of the fundamental drivers for biological activities and terrestrial carbon cycling. Although the response of soil respiration to precipitation has been well documented in arid and semiarid ecosystems, our understanding of its pattern in forests is rather limited. This study was conducted to examine the difference of precipitation effect on soil respiration under different canopy conditions in a temperate coniferous (Pinus armandii Franch) and broadleaved (Quercus aliena var. acuteserrata) mixed forest in Central China. The results showed that precipitation significantly reduced soil temperature, but increased soil volumetric water content and soil respiration (6.0%-35.3%). Precipitation caused a greater increment in soil respiration beneath the canopy of broadleaved trees (24.2%) than that beneath coniferous ones (13.5%). Precipitation-induced increase in soil respiration was consistently lower beneath the canopy of small size classes (7.1%-32.6%) than large size classes (9.5%-33.3%). Mean soil respiration of forest gaps increased 22.4% following precipitations. Our study highlights the positive response of soil respiration to precipitation pulses in water-unlimited ecosystems. The findings suggest that the spatial heterogeneity of soil respiration to precipitation pulse under different canopy conditions should be emphasized while assessing terrestrial carbon cycling and its feedback to climate change.

scholarly journals Spatial heterogeneity in mangroves assessed by GeoEye-1 satellite data: a case-study in Zhanjiang Mangrove National Nature Reserve (ZMNNR), China

2013 ◽  
Vol 10 (2) ◽  
pp. 2591-2615 ◽  
Author(s):  
K. Leempoel ◽  
C. Bourgeois ◽  
J. Zhang ◽  
J. Wang ◽  
M. Chen ◽  
...  
Keyword(s):  
Land Use ◽  
Spatial Heterogeneity ◽  
Satellite Data ◽  
Nature Reserve ◽  
Species Level ◽  
Geometric Distortion ◽  
Mangrove Forests ◽  
Ground Truth Data ◽  
National Nature Reserve ◽  
High Resolution Satellite Images

Abstract. Mangrove forests, which are declining across the globe mainly because of human intervention, require an evaluation of their past and present status (e.g. areal extent, species-level distribution, etc.) to better implement conservation and management strategies. In this paper, mangrove cover dynamics at Gaoqiao (under the jurisdiction of Zhanjiang Mangrove National Nature Reserve – ZMNNR, P. R. China) were assessed through time using 1967 (Corona KH-4B), 2000 (Landsat ETM+), and 2009 (GeoEye-1) satellite imagery. An important decline in mangrove cover (−36%) was observed between 1967 and 2009 due to dike construction for agriculture (paddy) and aquaculture practices. Moreover, dike construction prevented mangroves from expanding landward. Although a small increase of mangrove area was observed between 2000 and 2009 (+24%), the ratio mangrove/aquaculture kept decreasing due to increased aquaculture at the expense of rice culture. In the land-use/cover map based on ground-truth data (5 m × 5 m plot-based tree measurements) (August–September, 2009) and spectral reflectance values (obtained from pansharpened GeoEye-1), both Bruguiera gymnorrhiza and small Aegiceras corniculatum are distinguishable at 73–100% accuracy, whereas tall A. corniculatum is identifiable at only 53% due to its mixed vegetation stands close to B. gymnorrhiza (classification accuracy: 85%). Sand proportion in the sediment showed significant differences (Kruskal-Wallis/ANOVA, P < 0.05) between the three mangrove classes (B. gymnorrhiza and small and tall A. corniculatum). Distribution of tall A. corniculatum on the convex side of creeks and small A.corniculatum on the concave side (with sand) show intriguing patterns of watercourse changes. Overall, the advantage of very high resolution satellite images like GeoEye-1 for mangrove spatial heterogeneity assessment and/or species-level discrimination is well demonstrated, along with the complexity to provide a precise classification for non-dominant species (e.g. Kandelia obovata) at Gaoqiao. Despite the limitations such as geometric distortion and single band information, the 42-yr old Corona declassified images are invaluable for land-use/cover change detections when compared to recent satellite data sets.

The Spatial Heterogeneity of the Soil Bulk Density under Different Management Types of Pinus koraiensis Forests

2013 ◽  
Vol 726-731 ◽  
pp. 4315-4318
Author(s):  
Shu Li Wang ◽  
Chao Ma
Keyword(s):  
Spatial Heterogeneity ◽  
Bulk Density ◽  
Mixed Forest ◽  
Soil Bulk Density ◽  
Field Investigation ◽  
Pinus Koraiensis ◽  
Analysis Tool ◽  
Betula Platyphylla ◽  
Forest Types ◽  
Mixed Forests

Through the manner of field investigation and room experiments, by using software SPSS 13.0, software ArcGis 9.3 and geostatistical analysis tool, the spatial heterogeneity of the soil bulk density under virgin Pinus koraiensis forest, Betula platyphylla and Pinus koraiensis mixed forest (Pinus koraiensis natural regeneration), Betulaplatyphylla and Pinus koraiensis mixed forest (Pinus koraiensis planted) and pure Pinus koraiensis plantation were studied. The characteristics of the spatial heterogeneity of the soil bulk density under different forest types were different, the spatial heterogeneity of the soil bulk density under four forest types were influenced by random factors, but the auto relationship part of the soil bulk density spatial heterogeneity under Betula platyphylla and Pinus koraiensis mixed forests were bigger, and the change distance was smaller than that under pure Pinus koraiensis plantation. The spatial distribution pattern of the soil bulk density under Betula platyphylla and Pinus koraiensis mixed forests was superior to that under pure Pinus koraiensis plantation. The results would provide a theory basis for the recovery and the sustainable management of the Pinus koraiensis forest.

scholarly journals Harmonization of Recreational Opportunities and the Growing Tourist Flow in Baikal Nature Reserve Area

2019 ◽  
Vol 29 (1) ◽  
pp. 7-17 ◽  
Author(s):  
Elena Potapova ◽  
Yakov Sukhodolov
Keyword(s):  
Nature Reserve ◽  
World Heritage ◽  
Competitive Advantages ◽  
Sustainable Tourism Development ◽  
Waste Storage ◽  
Reserve Area ◽  
World Heritage List ◽  
Irkutsk Region ◽  
Tourist Infrastructure ◽  
Tourist Flow

Tourism as a sphere of economic activity is growing quickly nowadays. Baikal natural territory, unique in its richness and variety, is one of the key competitive advantages of our country as a tourism destination. Lake Baikal is on the top of the most popular Russian natural sites rating on UNESCO World Heritage list. The number of tourists visiting Baikal is growing steadily. Thus, in 2016, both the Irkutsk region and the Buryat Republic were visited by more than 2,5 mln. officially registered tourists including more than 500.000 foreign ones. The following significant problems caused by increase in tourist flow are considered in the article: illegal land seizure and unauthorized building of recreational centers; noncompliance of recreational centers with mandatory health requirements; lack of water production licenses, drain treatment, waste storage and utilization; coasts littering and lack of a valid waste management system; poaching; illegal logging and violation of nature reserve protection regime. Harmonization of sustainable tourism development also presupposes, besides the objectives already set many years ago, the following factors: temporarily restricted access to certain areas; regulation of the tourists flow and location of resorts; regulation of certain goods consumption within Baikal nature reserve area; changing international legislation which regulates visiting world heritage objects; encouraging use of green (sustainable and environmentally-friendly) technologies at the tourist infrastructure enterprises.

scholarly journals Diversity and Abundance Dragonflies (Odonata) at Mount Sigogor Nature Reserve Area, Ponorogo Regency, East Java, Indonesia

Jurnal Biota ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 101-108
Author(s):  
Muhamad Azmi Dwi Susanto ◽  
Saiful Bahri
Keyword(s):  
Rain Forest ◽  
Catchment Area ◽  
Nature Reserve ◽  
Diversity Index ◽  
Natural Habitat ◽  
A Value ◽  
Reserve Area ◽  
Wiener Diversity Index ◽  
Water Catchment ◽  
Number Of Individuals

Mount Sigogor Nature Reserve area is a mountainous tropical rain forest, administratively located in Pupus Village, Ngebel District, Ponorogo Regency, East Java, Indonesia. One of the main functions of this nature reserve is as a water catchment area for the villages around the nature reserve area. Water sources and flows within the Mount Sigogor Nature Reserve area have the potential as natural habitat for dragonflies. This study aims to determine the diversity and abundance of dragonflies (Odonata) in the Mount Sigogor Nature Reserve Area. The method of collecting dragonflies data used the Visual Day Flying method by recording the diversity of dragonflies species and counting the number of individuals from each observed dragonflies species. The data obtained were analyzed using the Relative abundance, Shannon-Wiener Heterogeneity Index and the frequency of Presence. The results of the research conducted showed that there were 14 species from 7 families with a total of 464 individuals. The Shannor-Wiener diversity index shows that the diversity value is H'= 1.81. Meanwhile, the presence frequency analysis showed that there were four species with a value of 100% which were classified as abundant Frequency of Presence, namely Euphaea variegata, Vestalis luctuosa, Rhinocypha anisoptera and Coeliccia membranipes.

scholarly journals Persepsi dan Partisipasi Masyarakat Adat atas Penetapan Kawasan Cagar Alam Teluk Bintuni di Distrik Wamesa Kabupaten Teluk Bintuni

Cassowary ◽  
2021 ◽  
Vol 4 (2) ◽  
pp. 172-189
Author(s):  
Syaiful Anwar Killian ◽  
Selvi Tebaiy ◽  
Ishak Musaad
Keyword(s):  
Indigenous Peoples ◽  
Community Involvement ◽  
Environmental Sustainability ◽  
Public Perception ◽  
Nature Reserve ◽  
Economic Activities ◽  
Conservation Area ◽  
Reserve Area ◽  
The Government ◽  
Very High

The indigenous peoples who live and live in the Bintuni Bay Nature Reserve Area in Wamesa District, consist of three villages, namely Mamuranu, Anak Kasih and Wasari. The economic activities carried out by indigenous peoples in the Bintuni Bay Nature Reserve conservation area are very high. This is related to the type of work or livelihood that the community is engaged in, namely fishermen (fish, shrimp and crab) at 43.75% and farming or gardening at 37.5%. Meanwhile, the public perception of the determination of the Bintuni Bay nature reserve area is quite varied. For example, the perception regarding the desire for community involvement in forest conservation in the Bintuni Bay nature reserve is very high (83.75%). Meanwhile, the perception of socialization or counseling from the Forestry Service / Agencies related to the management of the Bintuni Bay Nature Reserve is low (26.25%). Regarding the management of the Bintuni Bay nature reserve area, in general the community hopes to be actively involved in activities related to the Bintuni Bay Nature Reserve Area. In addition, the community wants to be allowed to carry out economic activities in the area, such as labor, gardening, fishing and others. Meanwhile, for the Government, the community hopes that there will be efforts to improve the community's economy and increase infrastructure and other public facilities, but while maintaining environmental sustainability forest in the Bintuni Bay nature reserve area.

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