基于RS和GIS林地植被生产力估测研究  

Study on the Technology of Forest Vegetation Productivity Monitoring Based on RS and GIS

作　　者：余坤勇[1] 刘健[1] 赖日文[1] 许章华[1] 曾海雄[1] 

机构地区：[1]福建农林大学林学院,福建福州350002

出　　处：《安徽农业科学》2009年第29期14327-14329,共3页Journal of Anhui Agricultural Sciences

基　　金：福建省科技重点攻关项目(2008N003);国家自然基金(308-71965)

摘　　要：以福建省永安、连城、漳平、新罗4个县(市、区)为研究区域,利用年均降水、气温及土壤资料,结合改进的NPP模型及生产力修正系数,实现研究区森林气候生产力、森林生产力以及林木产量的反演,并对各生产力进行空间分异分析研究。结果表明:研究区各县(市、区)森林气候生产力总体水平较高,介于1693.01～2312.03g/(m2.a),平均值达到2 112.65g/(m2.a);各县(市、区)森林生产力介于484.1～2001.5g/(m2.a),差异较大,平均值为1682.03 g/(m2.a),仅为森林气候生产力均值的79.6%,说明林地土壤肥力对森林生产力影响显著;各县(市、区)林木产量介于4.3～17.7g/(m2.a),平均值为14.9g/(m2.a)。Taking the four counties/cities/districts （ Yongan, Liancheng, Zhangping and Xinluo） of Fujian Province as the study area, using the materials of average annual precipitation, temperature and soil information, combined with the improved NPP model and productivity correction factor, the inversion of forest climate productivity, forest productivity and wood output were realized. Afterwards, the spatial variation of these productivities was analyzed. The results showed that： the forest climate productivities of these counties （cities, districts ） were on a higher level overall, which were between 1 693.006 -2 312.03 g/（m^2·a） and with the mean value of 2 112.645 g/（m^2·a） . The forest productivities were between 484.1 -2 001.5 g/（ m^2·a） which had a large difference, and the mean vahle was 1 682. 025 g/（ m^2·a） which was only 79.6% out of the mean vahue of the forest climate productivities ; it illustrated that the forest soil fertility had a significant impact on the forest productivity. The wood output were between 4.3 -17.7 g/（m^2·a） , of which the mean value was 14.9 g/（ m^2·a） .

关 键 词：林地植被净第一性生产力 森林气候生产力 森林生产力 林木产量 

分 类 号：S718.5[农业科学—林学]