Inventory Procedures for Smallholder and Community Woodlots in the Philippines: Methods,Initial Findings and Insights

This paper details the processes and challenges involved in collecting inventory data from smallholder and community woodlots on Leyte Island, Philippines. Over the period from 2005 through to 2012, 253 woodlots at 170 sites were sampled as part of a large multidisciplinary project, resulting in a substantial timber inventory database. The inventory was undertaken to provide information for three separate but interrelated studies, namely (1) tree growth, performance and timber availability from private smallholder woodlots on Leyte Island; (2) tree growth and performance of mixed-species plantings of native species; and (3) the assessment of reforestation outcomes from various forms of reforestation. A common procedure for establishing plots within each site was developed and applied in each study, although the basis of site selection varied. A two-stage probability proportion to size sampling framework was developed to select smallholder woodlots for inclusion in the inventory. In contrast, community-based forestry woodlots were selected using stratified random sampling. Challenges encountered in undertaking the inventory were mostly associated with the need to consult widely before the commencement of the inventory and problems in identifying woodlots for inclusion. Most smallholder woodlots were only capable of producing merchantable volumes of less than 44 % of the site potential due to a lack of appropriate silviculture. There was a clear bimodal distribution of proportion that the woodlots comprised of the total smallholding area. This bimodality reflects two major motivations for smallholders to establish woodlots, namely timber production and to secure land tenure.     

小城镇生态河道景观设计与应用——以苏州市震泽镇为例

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抚仙湖、星云湖、杞麓湖径流区森林资源评价及经营管理建议

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松花江母亲河岁月·梦想与现实(上)

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松花江母亲河岁月·梦想与现实(下)

牵动人心的松花江松花江水系哺育了四大片森林:长白山森林、小兴安岭森林、大兴安岭森林和张广才岭森林。这四大片森林是中国东北疆的肺叶,也是松花江流域水量均衡、水土保护向优良方向转化的天然调节水库。全东北的地形宛若一个浅簸箕,由大、小兴安岭、完达山、长白山镶边,张广才岭与吉林哈达岭及其森林犹如簸箕底上的两条横向的凸起,而江川河溪,就是它横亘的筋络。这种特定的地形,造成了辽河向南注入渤海,以及松花江干流最后朝东北流,同黑龙江相会,再同乌苏里江相会而北流注入鞑靼海峡——鄂霍次克海的流向。从日本海吹来的风和从西伯利亚…     

千岛湖及新安江上游流域林业生态保护对策

千岛湖及新安江上游流域是我国现阶段不可多得而亟需保护的水生态区域之一。分析了该流域林业生态现状和存在问题,提出进一步开展生态保护和修复的对策建议。