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黄土残塬沟壑区刺槐林枯落物水源涵养功能综合评价
引用本文:侯贵荣,毕华兴,魏曦,孔凌霄,周巧稚,张渲东.黄土残塬沟壑区刺槐林枯落物水源涵养功能综合评价[J].水土保持学报,2019,33(2):251-256.
作者姓名:侯贵荣  毕华兴  魏曦  孔凌霄  周巧稚  张渲东
作者单位:1. 北京林业大学水土保持学院, 北京 100083;2. 山西吉县森林生态系统国家野外科学观测研究站, 山西 吉县 042200;3. 水土保持国家林业局重点实验室(北京林业大学), 北京 100083;4. 北京市水土保持工程技术研究中心(北京林业大学), 北京 100083;5. 林业生态工程教育部工程研究中心(北京林业大学), 北京 100083;6. 北京林果业生态环境功能提升协同创新中心, 北京 102206;7. 山西农业大学林学院, 山西 太谷 030801
基金项目:国家重点研发计划项目"黄土残塬沟壑区水土保持型景观优化与特色林产业技术及示范(2016YFC0501704);国家科技计划项目"黄土残塬区水资源节约型农林复合系统调控技术研究与示范"(2015BAD07B0502);国家自然科学基金项目"果农间作系统林下太阳辐射时空分布及其对间作作物的影响"(31470638);科技创新服务能力建设-科研基地建设-林果业生态环境功能提升协同创新中心(2011协同创新中心)(市级)(PXM2019_014207_000024)
摘    要:为了对黄土残塬沟壑区刺槐林枯落物水源涵养功能综合评价,并提供以功能导向型的林分改造理论依据。于2017年7—8月在山西省吉县蔡家川流域选取475,900,1 575,1 850,2 525株/hm~2不同密度的刺槐林为研究对象,采用坐标综合评定法对不同密度刺槐林分枯落物层水源涵养功能进行综合评价。结果表明,5种林分密度梯度中,当林分密度为1 575株/hm~2时,刺槐林枯落物层能充分发挥其水源涵养功能,而林分密度过高(2 525株/hm~2)或者过低(475株/hm~2)枯落物发挥水源涵养功能的能力均急剧减弱。为了使刺槐林枯落物水源涵养功能正常发挥,其林分密度应控制为1 500株/hm~2。建议现有林分改造中,宜将刺槐林向该密度进行调控。

关 键 词:密度梯度  水源涵养功能  综合评价  坐标综合评定法
收稿时间:2018/8/16 0:00:00

Comprehensive Evaluation of Water Conservation Function of Litters of Robinia Pseudoacacia Forest Lands in Gully Region on Loess Plateau
HOU Guirong,BI Huaxing,WEI Xi,KONG Lingxiao,ZHOU Qiaozhi,ZHANG Xuandong.Comprehensive Evaluation of Water Conservation Function of Litters of Robinia Pseudoacacia Forest Lands in Gully Region on Loess Plateau[J].Journal of Soil and Water Conservation,2019,33(2):251-256.
Authors:HOU Guirong  BI Huaxing  WEI Xi  KONG Lingxiao  ZHOU Qiaozhi  ZHANG Xuandong
Institution:1. College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083;2. National Field Research Station of Forestry, Jixian, Shanxi 042200;3. Key Laboratory of State Forestry Administration on Soil and Water Conservation(Beijing Forestry University), Beijing 100083;4. Beijing Soil and Water Conservation Engineering Technology Research Center(Beijing Forestry University), Beijing 100083;5. Forestry Ecological Engineering Ministry of Education Engineering Research Center(Beijing Forestry University), Beijing 100083;6. Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing 102206;7. College of Forestry, Shanxi Agricultural University, Taigu, Shanxi 030801
Abstract:In order to comprehensively evaluate the function of water conservation of litters in Robinia pseudoacacia forests and provide the theoretical basis for the function-oriented stand improvement in Gully Region on Loess Plateau, five stand densities (475, 900, 1 575, 1 850, 2 525 plants/hm2) were chosen as subjects in this study at Caijiachuan watershed in Ji County of Shanxi province from July to August, 2017. The comprehensive coordinate method was applied to evaluate the function of water conservation of litters in R. pseudoacacia forests. Results showed that the litters of R. pseudoacacia forests could become effective fully on water conservation when the stand density was 1 575 plants/hm2. However, the ability of the litter to play the function of water conservation was significantly reduced when the forest density was too high (2 525 plants/hm2) or too low (475 plants/hm2). The forest density should be controlled at 1 500 plants/hm2 so that its litters could play fully the function of water conservation in R. pseudoacacia forests. Therefore, it was advised that the existing forest of R. pseudoacacia should be improved accordance to this forest density.
Keywords:density gradient  water conservation function  comprehensive evaluation  coordinate comprehensive evaluation
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