Artificial propagation by seeding useful wild grasses for re-vegetation.

通过播种有用的野生草来重新植被进行人工繁殖。

• 批准号: 16580224
• 负责人: NISHIWAKI Aya
• 金额: $ 2.37万
• 依托单位: University of Miyazaki
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16580224/
• 关键词: Bio-diversity; Native grass; Re-vegetation; Seed dormancy; Seed propagation; Seed harvester; Variety; 緑化; エンジン付草払い機

It is very important to use native grass for fodder crop or re-vegetation because of problems of invading species of commercial based seeds of pasture grass. Escaped pasture grass had been invaded to various ecosystems and they negatively changed bio-diversity. Then, many ecologists recommend to use the native grass for artificial grassland. But, there are some problems for using native grass such as difficulty of seed collection. Seed collection of Japanese native grass is very difficult because of small seed with pappus. We can not use common seed harvester for native grass. And, it is very difficult to adjust the all seed of native grass to artificial condition because there are many genetic variations in only one population. So, we tried to search adequate varieties for re-vegetation. And, we tried to exploit seed harvester for native grass.We found some genetically differentiated varieties of Imperata cylindrical. A variety have large seed with no seed dormancy. It is thought that that variety is very useful for re-vegetation. We exploited the seed harvester by miner change of handy engine duster. The efficiency of seed collection is very high of this seed harvester compare to hand collection. But, there are some problems for seed germination because of rough collecting at high power. We must solve this problem for using native grass by seed propagation.

由于商业牧草种子入侵物种的问题，使用原生草作为饲料作物或重新植被非常重要。逃逸的牧草已侵入各种生态系统，对生物多样性产生负面影响。因此，许多生态学家建议使用原生草作为人工草地。但使用原生草存在种子采集困难等问题。日本本土草的种子采集非常困难，因为带有冠毛的种子很小。我们不能使用普通的种子收割机来收割原生草。而且，将原生草的所有种子调整到人工条件是非常困难的，因为仅在一个群体中就存在许多遗传变异。因此，我们试图寻找足够的品种来重新植被。并且，我们尝试开发原生草的种子收割机。我们发现了一些遗传分化的圆柱形白茅品种。该品种种子大，无种子休眠。人们认为该品种对于植被恢复非常有用。我们通过矿工更换便携式发动机除尘器来开发种子收割机。与手工收集相比，该种子收割机的种子收集效率非常高。但由于高倍采集粗糙，种子发芽存在一些问题。利用原生草必须通过种子繁殖来解决这个问题。

项目成果

Grazing behavior and rumen characteristics of Japanese black cattle in native pasture.

原生牧场黑日本牛的放牧行为及瘤胃特征

• 发表时间: 2005
• 期刊: Animal Behavior and Management 41・2
• 作者: Rekha Chowdappa;Aya Nishiwaki;他7名
• 通讯作者: 他7名

Site selection for the cattle -grazing forestry system based on topographic analysis using 50m resolution DEM, - A case study in Morotsuka Village, Japan.

基于使用 50m 分辨率 DEM 的地形分析的牛放牧林业系统选址——日本诸冢村的案例研究。

• 发表时间: 2005
• 期刊: Landscape Ecology (in Japanese with English summary) 10(1)
• 作者: Satoshi Ito;Natsuko Fujii;Aya Nishiwaki;Yasushi Mitsuda
• 通讯作者: Yasushi Mitsuda

数値地図50mメッシュ(標高)を用いた地形解析に基づく林畜複合生産システムの適地選定手法-宮崎県諸塚村を事例として-

基于50m网格（海拔）数字地图地形分析的林牧结合生产系统的适宜选址方法 - 以宫崎县诸冢村为例 -

• 发表时间: 2005
• 期刊: 日本景観生態学会誌 10・1
• 作者: Satoshi Ito;Natsuko Fujii;Aya Nishiwaki;Yasushi Mitsuda;Aya Nishiwaki 他5名;Aya Nishiwaki 他6名;西脇亜也 他 4名
• 通讯作者: 西脇亜也 他 4名

Genetic distance between two types of Imperata cylindrica (L.) BEAUV. characterized by flowering phenology.

两种白茅 (Imperata cylindrica (L.) BEAUV) 类型之间的遗传距离。

• 发表时间: 2004
• 期刊: Grassland Science 50(1)
• 作者: Aki MIZUGUTI;Aya NISHIWAKI;Yasuhiro SUGIMOTO
• 通讯作者: Yasuhiro SUGIMOTO

放牧地の侵入低木であるタニウツギの種子発芽特性

草场入侵灌木蚱蜢种子萌发特性

• 发表时间: 2004
• 期刊: 日本草地学会誌 50・4
• 作者: 新庄久尚;西脇亜也;菅原和夫
• 通讯作者: 菅原和夫